CN116929872B - Undisturbed accurate sample preparation device and method for reservoir bank slope hydro-fluctuation belt rock - Google Patents
Undisturbed accurate sample preparation device and method for reservoir bank slope hydro-fluctuation belt rockInfo
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- CN116929872B CN116929872B CN202310804596.XA CN202310804596A CN116929872B CN 116929872 B CN116929872 B CN 116929872B CN 202310804596 A CN202310804596 A CN 202310804596A CN 116929872 B CN116929872 B CN 116929872B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
- G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
- G01N24/081—Making measurements of geologic samples, e.g. measurements of moisture, pH, porosity, permeability, tortuosity or viscosity
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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Abstract
The invention relates to a disturbance-free accurate sample preparation device and method for reservoir bank slope hydro-fluctuation belt rock, comprising a drilling module, a dust removal module, a wet and dry circulation condition simulation module and a sampling and lofting module, wherein the drilling module comprises a drill bit and a screw rod, the drill bit is hollow and cylindrical, and the drill bit moves up and down when the screw rod rotates; the wet and dry circulating condition simulation module moves between the drilling module and the sampling and lofting module through the sliding rail, and the dust removal module also moves along the sliding rail. The invention has the beneficial effects that the rock sample is arranged through the rock sample sleeve, the sampling and lofting module is used for realizing the sampling and lofting of the rock sample by grabbing the rock sample sleeve, the disturbance of the direct contact of the rock sample and the hand to the rock sample is avoided, the disturbance of the drilling sample wet and dry cycle back and forth sampling and lofting process to the rock sample is avoided, the same section of the same batch of rock sample is scanned and extracted by utilizing the nuclear magnetic resonance testing method, the pore and crack distribution information is accurately positioned and tracked on the same section, and the discreteness is reduced.
Description
Technical Field
The invention belongs to the technical field of rock engineering, and particularly relates to a disturbance-free accurate sample preparation device and method for reservoir bank slope hydro-fluctuation belt rock.
Background
The rock drilling device and the wet and dry circulation condition simulation device are wide in application, and can be combined with different experimental devices to study the changes of the pore, crack distribution and the like of the rock after different times of wet and dry.
The conventional sample preparation method has the following problems that 1) disturbance of a module on a rock sample is not considered, and the influence of a hand directly contacting the rock sample on the rock sample is not considered, and the small disturbance can influence the rock sample for researching the change of distribution information such as pores, cracks and the like, 2) the conventional device mainly firstly drills the sample to take out the rock sample and then carries out wet and dry circulation, is complicated to operate and has the influence of various disturbance, and 3) the conventional method possibly adopts a polarizing microscope or other methods, so that the rock sample is damaged, or the sections scanned for many times do not belong to the same section, and the larger discreteness exists.
In summary, when relevant experimental study is performed on a rock sample, the influence of various disturbances on the rock sample is not considered in the traditional equipment, and the changes of the pores, the crack distribution and the like of the section of the rock sample are difficult to accurately locate and track, and the changes of the pores, the crack distribution and the like at the same position of the same batch of rock sample after wet and dry circulation are difficult to learn.
Therefore, the undisturbed accurate sample preparation device and method for the reservoir bank slope hydro-fluctuation belt rock are researched, so that rock drilling and wet-dry circulation are integrated, the undisturbed accurate sample preparation device for directly sampling and lofting is used, and research on the change rule of distribution such as wet-dry circulation rock sample pores and cracks under different times is necessary.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a disturbance-free accurate sample preparation device and method for reservoir bank slope hydro-fluctuation belt rock.
The undisturbed accurate sample preparation device for the reservoir bank slope hydro-fluctuation belt rock comprises a drilling module, a dust removal module, a wet and dry circulation condition simulation module and a sampling and lofting module, wherein the drilling module comprises a drill bit and a screw rod, the drill bit is hollow and cylindrical, and the drill bit moves up and down when the screw rod rotates;
A slide rail is arranged on the bottom plane of the drilling sample module, one end of the slide rail extends to the lower part of the drill bit, the sampling and lofting module is fixed at the middle section of the travel of the slide rail, the distance between the sampling and lofting module and the drilling sample module is larger than the width of the wet and dry circulation condition simulation module,
The wet and dry circulating condition simulation module moves between the drilling module and the sampling and lofting module through a sliding rail, a rock sample sleeve for loading a rock sample is placed in the wet and dry circulating condition simulation module, and the sampling and lofting module is downwards provided with a contractible collar for clamping the rock sample sleeve through a telescopic rod;
The dust removal module also moves along the slide rail.
Preferably, the screw is vertically arranged on one side far away from the sampling and lofting module through the case, a gear transmission component for controlling the screw to rotate is arranged on the side edge of the case, the tops of the drill bits are mutually fixed through the plate, and the plate is provided with a threaded hole matched with the screw.
The drill bit is characterized in that clamping plates are arranged on the edges of two sides of the plate, the distance between the clamping plates is matched with the size of a rock, a dust removing box is connected to the inner side of the top end of the drill bit and is annular, a plurality of dust collecting holes are formed in the bottom of the dust removing box, a small jack is arranged at the top end of the drill bit, the bottom of the small jack stretches into the lower portion of the dust removing box, and a rubber film is arranged on the end face of the bottom of the small jack.
The dust removal module is characterized in that a dust removal barrel is arranged at the top of the dust removal module, an exhaust fan is arranged in the dust removal barrel, a dust storage box is communicated with the lower end of the dust removal barrel, a dust collection head is arranged on one side of the dust removal barrel, which faces the drilling sample module, the other side of the dust removal barrel is communicated with the side wall of the dust storage box through a dust collection pipe, a water tank is communicated with the bottom end of the dust storage box, the dust collection head is higher than the rock mass, and the dust collection head faces downwards.
The wet and dry circulation condition simulation module comprises a box-shaped structure, wherein the top surface of the box-shaped structure is a sliding plate, one side of the box-shaped structure is connected with a water outlet pipe and a water inlet pipe, the other side of the box-shaped structure is connected with an air compressor and a blowing pipe, a blower is arranged on the inner wall of the box-shaped structure, the water inlet pipe is a horizontal straight pipe, one end of the water outlet pipe stretches into the bottom of the box-shaped structure, the middle section of the water outlet pipe is a horizontal straight pipe higher than the bottom of the box-shaped structure, the other end of the water outlet pipe is a vertical downward straight pipe, and the bottom height of the straight pipe is lower than the bottom height of the box-shaped structure.
The method is characterized in that a plurality of rock sample sleeves are arranged in a wet and dry circulation condition simulation module side by side, the plurality of rock sample sleeves are arranged in the wet and dry circulation condition simulation module side by side, the sampling and lofting module comprises a support, two sides of the support are respectively fixed on the outer side of a sliding rail, and when the contractible necklace clamps the rock sample sleeves, the contractible necklace is sleeved on the top end of the rock sample sleeves.
The application method of the undisturbed accurate sample preparation device for the rock of the hydro-fluctuation belt of the reservoir bank slope comprises the following steps:
Firstly, cutting field undisturbed rock into rock blocks, placing the rock blocks below a drill bit, drilling a plurality of cylindrical rock samples from the inside of the rock blocks by using the drill bit, and simultaneously carrying out external dust removal through a dust removal module;
Step two, lifting a drill bit, taking away rock waste, moving a wet and dry circulation condition simulation circulation module to the position right below a drilling sample module, pushing a rock sample into a rock sample sleeve of the wet and dry circulation condition simulation module by using a small jack, and moving the wet and dry circulation condition simulation circulation module to the position below a sampling lofting module;
step three, storing water by a wet and dry circulation condition simulation module, using an air compressor to simulate the bank slope stress of a bank slope hydro-fluctuation belt of the pumped storage power station in a pressurized mode, draining water, and using a blower to air dry to finish one-time wet and dry circulation;
And fourthly, clamping the rock sample sleeve through the sampling and lofting module, taking out the rock sample from the rock sample sleeve, performing nuclear magnetic resonance scanning on a plurality of sections, and extracting pore and crack distribution of the rock sample.
The method comprises a first step of setting a rock sample in a sleeve, a second step of setting a wet and dry circulation condition simulation module, a third step of setting a sample in the sleeve, a fourth step of setting a sample in the sleeve, a fifth step of setting a sample in the sleeve, a fourth step of setting a wet and dry circulation condition simulation module, and a fifth step of repeating the third to fourth steps until the change rate DeltaT of pore and crack distribution of the same section of the same rock sample is less than or equal to 1%, stopping the wet and dry circulation, and analyzing the change process and evolution rule of the pore and crack distribution under the condition of the wet and dry circulation of the rock of the water-level hydro-fluctuation belt of the reservoir bank according to the results of the wet and dry circulation.
In the second step, firstly, the dust removal module is removed through the sliding rail, rock wastes are taken away, and then the box-shaped structure of the wet and dry circulation condition simulation circulation module is inserted into the device from a gap between the sampling and lofting module and the drilling and sampling module and is arranged on the sliding rail.
Preferably, the wet and dry circulation condition simulation module is opened by sliding and opening the sliding plate, the sliding plate is closed by sliding after the rock sample is put in, the top surface of the wet and dry circulation condition simulation module is closed, and the top surface of the wet and dry circulation condition simulation module is kept closed in the wet and dry circulation process.
The beneficial effects of the invention are as follows:
1) According to the invention, the rock sample is arranged through the rock sample sleeve, the sampling and lofting module is used for sampling and lofting the rock sample by grabbing the rock sample sleeve, so that disturbance to the rock sample caused by direct contact of the rock sample and hands is avoided, the drilling sample wet and dry cycle sampling is integrated, disturbance to the rock sample caused by the drilling sample wet and dry cycle back and forth sampling and lofting process is avoided, meanwhile, the same cross section of the same batch of rock sample is scanned and extracted by utilizing a nuclear magnetic resonance testing method, pore and crack distribution information is extracted, accurate positioning and tracking are performed on the same cross section, and the discreteness is reduced.
2) According to the device, the rock mass is drilled through the drilling module, the dust removal module and the dust removal box are used for respectively removing dust from the outside and the inside, so that disturbance of dust in the drilling process to the drilling process is prevented, and the discreteness is further reduced.
2) According to the invention, a plurality of rock samples are subjected to wet and dry circulation for a plurality of times at the same time, after each wet and dry circulation is finished, the rock samples are taken out by using a sampling and lofting module, nuclear magnetic resonance is performed on the rock samples by using a rock nuclear magnetic resonance instrument, and pore and crack distribution information in an image is extracted through image binarization, so that the change process of pore and crack distribution and the analysis of an evolution rule thereof under the condition of the wet and dry circulation of the rock of the water-level hydro-fluctuation belt of the reservoir bank slope are realized.
Drawings
FIG. 1 is a three-dimensional view of the device of the present invention;
FIG. 2 is a three-dimensional view of the invention with the sample drilling module above the rock mass;
FIG. 3 is a three-dimensional view of a drilling module in the apparatus of the present invention;
FIG. 4 is a three-dimensional view of a dust box in the apparatus of the present invention;
FIG. 5 is a three-dimensional view of a small jack in the apparatus of the present invention;
FIG. 6 is a three-dimensional view of a dust removal module in the apparatus of the present invention;
FIG. 7 is a three-dimensional view of a wet and dry cycle condition simulation module in the apparatus of the present invention;
FIG. 8 is a three-dimensional view of a sampling and lofting module of the apparatus of the present invention;
FIG. 9 is a three-dimensional view of the apparatus of the present invention as it drills a sample;
FIG. 10 is a three-dimensional view of the device of the present invention in use;
FIG. 11 is a three-dimensional view of the device of the present invention in a wet-dry cycle;
Fig. 12 is a flow chart of the present invention.
The reference numerals illustrate the drilling module 1, the dust removing module 2, the wet and dry circulation condition simulation module 3, the sampling and lofting module 4, the machine case 101, the gear transmission member 102, the clamping plate 103, the screw 104, the small jack 105, the rubber membrane 106, the dust removing box 107, the dust collecting hole 108, the drill bit 109, the rock mass 110, the slide rail 111, the dust removing barrel 201, the dust collecting head 202, the dust storage box 203, the water tank 204, the air suction fan 205, the dust collecting pipe 206, the dust removing module slide pad 207, the slide plate 301, the rock sample sleeve 302, the air compressor 303, the blowing pipe 304, the blower 305, the water outlet pipe 306, the water inlet pipe 307, the wet and dry circulation condition simulation module slide pad 308, the bracket 401, the telescopic rod 402 and the retractable collar 403.
Detailed Description
The invention is further described below with reference to examples. The following examples are presented only to aid in the understanding of the invention. It should be noted that it will be apparent to those skilled in the art that modifications can be made to the present invention without departing from the principles of the invention, and such modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Example 1
As an embodiment, the undisturbed accurate sample preparation device for the reservoir bank slope hydro-fluctuation belt rock comprises a drilling sample module 1, a wet and dry circulation condition simulation module 3 and a sampling and lofting module 4.
As shown in fig. 2 to 3, the drilling module 1 comprises a drill 109 and a screw 104, the drill 109 is hollow and cylindrical, the screw 104 is vertically arranged on one side far away from the sampling and lofting module 4 through a machine case 101, a gear transmission member 102 for controlling the rotation of the screw 104 is arranged on the right side of the machine case 101, the gear transmission member serves as a small engine, meanwhile, accurate scale is arranged between gears, the descending speed and distance of the drill 109 are controlled, the tops of the three drills 109 are mutually fixed through a plate, threaded holes matched with the screw 104 are formed in the plate, when the screws 104 synchronously rotate, a plurality of mutually connected drills 109 also synchronously move up and down, and a slide rail 111 is arranged on the plane of the bottom of the drilling module 1, and the slide rail 111 is a sliding rail of the wet and dry cycle condition simulation module 3. One end of the slide 111 extends directly below the drill bit 109.
The two side edges of the plate are provided with clamping plates 103, the distance between the clamping plates 103 is matched with the size of the rock block 110, the clamping plates 103 clamp the rock block 110 when the drill bit 109 descends, and the bottom height of the clamping plates 103 is not lower than the bottom height of the drill bit 109, so that the drill bit 109 can drill to the lowest point of the rock block 110.
As shown in fig. 4 and 5, the inside at the top of the drill bit 109 is connected with an annular dust removal box 107 for internal dust removal, the dust removal box 107 is clung to the inner wall of the drill bit 109 and moves up and down along with the drill bit 109, a plurality of dust collection holes 108 are formed in the bottom of the dust removal box 107, a small jack 105 is arranged at the top end of the drill bit 109 and used for downwards ejecting a drilled rock sample, the bottom of the small jack 105 penetrates through the dust removal box 107 to enter the inside of the drill bit 109 below the small jack 105, a rubber membrane 106 is arranged on the end face of the bottom of the small jack 105, and the influence of force in the ejection process on the upper surface of the rock sample is reduced.
As shown in fig. 7, a wet-dry circulation condition simulation module sliding pad 308 is arranged at the bottom of the wet-dry circulation condition simulation module 3, the wet-dry circulation condition simulation module sliding pad 308 and the sliding rail 111 are matched to move smoothly between the drilling sample module 1 and the sampling sample placing module 4, a rock sample sleeve 302 for loading rock samples is arranged in the wet-dry circulation condition simulation module 3, a plurality of rock sample sleeves 302 are placed side by side in the wet-dry circulation condition simulation module 3, the wet-dry circulation condition simulation module 3 is of a box-shaped structure, the top surface of the wet-dry circulation condition simulation module 3 is provided with a sliding plate 301, one side of the wet-dry circulation condition simulation module 3 is provided with a water outlet pipe 306 and a water inlet pipe 307, the other side of the wet-dry circulation condition simulation module 3 is provided with an air compressor 303 and a blowing pipe 304, the inner wall of the box-shaped structure is provided with a blower 305, one end of the water inlet pipe 307 is a horizontal straight pipe, one end of the water outlet pipe 306 stretches into the bottom of the box-shaped structure, the middle section of the water outlet pipe 306 is a horizontal straight pipe higher than the bottom of the box-shaped structure, the other end is a vertical downward straight pipe, and the bottom of the straight pipe is lower than the bottom of the box-shaped structure is high in siphon effect, so that the water outlet pipe 306 can utilize the siphon effect, and water drainage is accelerated.
As shown in fig. 8, the sampling and lofting module 4 is provided with a retractable collar 403 for clamping the rock sample sleeve 302 downwards through a telescopic rod 402, the sampling and lofting module 4 comprises a support 401, two sides of the support 401 are respectively fixed on the outer side of the sliding rail 111, when the retractable collar 403 clamps the rock sample sleeve 302, the retractable collar 403 is sleeved on the top end of the rock sample sleeve 302, stable lifting of the rock sample sleeve 302 and the rock sample inside the rock sample sleeve can be realized, and disturbance of devices and human factors on the rock sample is avoided.
Example two
As another embodiment, based on the first embodiment, the second embodiment provides a more specific disturbance-free accurate sample preparation device for a water-level-fluctuating zone rock of a bank slope of a reservoir, as shown in fig. 1, the device further comprises a dust removal module 2, a dust removal module sliding pad 207 is arranged at the bottom of the dust removal module 2, and the dust removal module 2 moves along the sliding rail 111 through the cooperation of the dust removal module sliding pad 207 and the sliding rail 111.
As shown in fig. 11, the sampling and lofting module 4 is fixed at the middle of the travel of the sliding rail 111, and the distance between the sampling and lofting module 4 and the drilling and lofting module 1 is greater than the width of the wet-dry circulation condition simulation module 3.
As shown in fig. 6, the top of the dust removing module 2 is provided with a dust removing barrel 201, an exhaust fan 205 is arranged in the dust removing barrel 201, the lower end of the dust removing barrel 201 is communicated with a dust storage tank 203, one side of the dust removing barrel 201, which faces the drilling module 1, is provided with a dust collecting head 202, the other side of the dust removing barrel is communicated with the side wall of the dust storage tank 203 through a dust collecting pipe 206, the bottom end of the dust storage tank 203 is communicated with a water tank 204, the dust collecting head 202 is higher than the rock mass 110, and the dust collecting head 202 faces downwards. When the sample is drilled, the dust removing module 2 moves to the side edge of the sample drilling module 1, the air draft fan 205 of the dust removing module 2 rotates to do work, a negative pressure state is formed in the dust fall barrel 201, generated dust is sucked into the dust fall barrel 201 by the dust suction head 202 close to the collecting end of the drill bit 109, the dust falls into the water tank 204 at the lower part, and the dust is sucked into water to reduce flying of the dust, so that external dust removal is realized.
As shown in fig. 10 and 11, after the drilling process is finished, the dust removal module 2 is removed, and the wet and dry circulation condition simulation module 3 can be inserted and installed on the slide rail 111 from the side, so that the wet and dry circulation condition simulation after drilling is conveniently performed, and at this time, the wet and dry circulation condition simulation module 3 is between the dust removal module 2 and the drilling module 1.
It should be noted that, in this embodiment, the same or similar parts as those in the first embodiment may be referred to each other, and will not be described in detail in the present application.
Example III
As another embodiment, the method for using the undisturbed accurate sample preparation device for the reservoir bank slope hydro-fluctuation belt rock in the second embodiment comprises the following steps:
Step one, obtaining field undisturbed rock, cutting the field undisturbed rock into rectangular rock blocks 110 with the length of 9cm multiplied by 3cm multiplied by 4cm, placing the rectangular rock blocks under a drill bit 109, drilling three cylindrical rock samples with the length of 2cm multiplied by 4cm from the inside of the rectangular rock blocks 110 by using the drill bit 109, and simultaneously carrying out external dust removal through a dust removal module 2, wherein a dust removal box 107 at the upper part of the drill bit 109 carries out internal dust removal along with the drill bit 109 in the process of drilling the sample, carrying out dust suction and dust removal from the upper part, and preventing dust generated by drilling the sample from being poured into gaps between the rock samples and cutter heads to disturb the rock samples.
Step two, a drill bit 109 is lifted, a dust removal module 2 is moved away through a sliding rail 111, rock block 110 waste is removed, then a box-shaped structure of a wet and dry circulation condition simulation circulation module 3 is inserted into a device from a gap between a sampling lofting module 4 and a drilling sample module 1 and is arranged on the sliding rail 111, the wet and dry circulation condition simulation circulation module 3 is moved to the position right below the drilling sample module 1, the wet and dry circulation condition simulation module 3 is opened by sliding and opening a sliding plate 301, as shown in fig. 10, three rock samples are respectively pushed into a rock sample sleeve 302 of the wet and dry circulation condition simulation module 3 by utilizing a small jack 105, the sliding plate 301 is closed by sliding, and the wet and dry circulation condition simulation circulation module 3 is moved to the position below the sampling lofting module 4, as shown in fig. 11;
And thirdly, storing water in the wet and dry circulation condition simulation module 3, controlling the pressure in the module by using an air compressor 303 to simulate the bank slope stress of a bank slope hydro-fluctuation belt of the pumped storage power station, wherein the maximum pressure added after water storage is not more than 1Mpa, draining water, and performing air drying by using a blower 305 to complete one wet and dry circulation, wherein the top surface of the wet and dry circulation condition simulation module 3 is kept closed in the wet and dry circulation process, and the wet and dry circulation condition simulation module 3 can be moved to the lower part of the sampling lofting module 4 after the first wet and dry circulation is completed.
Step four, the sliding plate 301 is slid to open the wet and dry circulation condition simulation module 3, the sampling and lofting module 4 clamps the rock sample sleeve 302, the rock sample and the rock sample sleeve 302 are taken out together, disturbance caused by direct contact of the rock sample and hands is avoided, the rock sample is taken out of the rock sample sleeve 302 and then subjected to accurate positioning control, nuclear magnetic resonance scanning is carried out on three sections which are 1cm, 2cm and 3cm away from the upper surface of the rock sample, scanned images are processed, and pore and crack distribution information in the images is extracted through image binarization.
Example IV
As another example, on the basis of the third example, the fourth example proposes a method for researching the trend of pore and crack distribution by performing wet-dry cycle a plurality of times, as shown in fig. 12, specifically:
The fourth step further comprises a fifth step, wherein the rock sample is put back into the rock sample sleeve 302, the wet and dry circulation condition simulation module 3 is put back by the sampling and lofting module 4, the third to fifth steps are repeated, accurate positioning tracking of the same section of each rock sample in different times of wet and dry circulation is avoided, the discreteness caused by the fact that distribution information such as pores and cracks is acquired for different sections of different rock samples in a traditional method is avoided, and the pore structure of the same section of the same rock sample is hardly changed until the change rate DeltaT of pore and crack distribution is less than or equal to 1%, and the wet and dry circulation is stopped.
And (3) extracting pore and crack distribution information in the image through image binarization, and analyzing the change process and evolution rule of pore and crack distribution under the condition of the wet and dry circulation of the rock of the water-level fluctuation belt of the reservoir bank slope according to the results of a plurality of wet and dry circulation.
In this embodiment, the same or similar parts as those of the embodiment may be referred to each other, and will not be described in detail in the present disclosure. In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by a difference from other embodiments, and identical and similar parts between the embodiments are mutually referred.
Claims (10)
1. The undisturbed accurate sample preparation device for the reservoir bank slope hydro-fluctuation belt rock is characterized by comprising a drilling sample module (1), a dust removal module (2), a wet and dry circulation condition simulation module (3) and a sampling and lofting module (4), wherein the drilling sample module (1) comprises a drill bit (109) and a screw (104), the drill bit (109) is in a hollow cylinder shape, and the drill bit (109) moves up and down when the screw (104) rotates;
A sliding rail (111) is arranged on the bottom plane of the drilling sample module (1), one end of the sliding rail (111) extends to the lower part of the drill bit (109), the sampling sample setting-out module (4) is fixed at the stroke middle section of the sliding rail (111), and the distance between the sampling sample setting-out module (4) and the drilling sample module (1) is larger than the width of the wet and dry circulation condition simulation module (3);
The wet and dry circulation condition simulation module (3) moves between the drilling sample module (1) and the sampling and lofting module (4) through a sliding rail (111), a rock sample sleeve (302) for loading a rock sample is placed in the wet and dry circulation condition simulation module (3), and the sampling and lofting module (4) is downwards provided with a contractible collar (403) for clamping the rock sample sleeve (302) through a telescopic rod (402);
the dust removal module (2) also moves along the slide rail (111).
2. The undisturbed accurate sample preparation device for reservoir bank slope hydro-fluctuation belt rock according to claim 1, wherein the screw rod (104) is vertically arranged on one side far away from the sampling and lofting module (4) through the machine case (101), a gear transmission component (102) for controlling the screw rod (104) to rotate is arranged on the side edge of the machine case (101), the tops of the drill bits (109) are mutually fixed through a plate, and threaded holes matched with the screw rod (104) are formed in the plate.
3. The undisturbed accurate sample preparation device for the reservoir bank slope hydro-fluctuation belt rock is characterized in that clamping plates (103) are arranged at the edges of two sides of a plate, the distance between the clamping plates (103) is matched with the size of a rock block (110), a dust removing box (107) is connected to the inner side of the top end of a drill bit (109), the dust removing box (107) is annular, a plurality of dust collecting holes (108) are formed in the bottom of the dust removing box (107), a small jack (105) is arranged at the top end of the drill bit (109), the bottom of the small jack (105) stretches into the position below the dust removing box (107), and a rubber membrane (106) is arranged on the end face of the bottom of the small jack (105).
4. A non-disturbance accurate sample preparation device for reservoir bank slope hydro-fluctuation belt rock according to claim 3, characterized in that, dust removal module (2) top is equipped with dust fall bucket (201), be equipped with induced draught fan (205) in dust fall bucket (201), dust fall bucket (201) lower extreme intercommunication has dust storage tank (203), dust fall bucket (201) are equipped with dust absorption head (202) towards boring one side of sample module (1), the opposite side is through dust absorption pipe (206) intercommunication dust storage tank (203) lateral wall, dust storage tank (203) bottom intercommunication has water tank (204), dust absorption head (202) are higher than rock (110) high, and dust absorption head (202) are down.
5. The undisturbed accurate sample preparation device for the rocks of the water fluctuation belt on the bank slope of the reservoir according to claim 1 is characterized in that the wet-dry circulation condition simulation module (3) comprises a box-shaped structure, the top surface of the box-shaped structure is a sliding plate (301), one side of the box-shaped structure is connected with a water outlet pipe (306) and a water inlet pipe (307), the other side of the box-shaped structure is connected with an air compressor (303) and a blowing pipe (304), a blower (305) is arranged on the inner wall of the box-shaped structure, the water inlet pipe (307) is a horizontal straight pipe, one end of the water outlet pipe (306) extends into the bottom of the box-shaped structure, the middle section of the water outlet pipe (306) is a horizontal straight pipe higher than the bottom of the box-shaped structure, the other end of the water outlet pipe is a vertical downward straight pipe, and the bottom of the straight pipe is lower than the bottom of the box-shaped structure.
6. The undisturbed accurate sample preparation device for reservoir bank slope hydro-fluctuation belt rock according to claim 5, wherein a plurality of rock sample sleeves (302) are placed in a wet-dry circulation condition simulation module (3) side by side, a sampling and lofting module (4) comprises a support (401), two sides of the support (401) are respectively fixed on the outer side of a sliding rail (111), and when a retractable collar (403) clamps the rock sample sleeves (302), the retractable collar (403) is sleeved on the top ends of the rock sample sleeves (302).
7. A method of using a disturbance-free precision sample preparation device for reservoir bank slope hydro-fluctuation belt rock as claimed in any one of claims 1 to 6, comprising the steps of:
Firstly, cutting field undisturbed rock into rock blocks (110), arranging the rock blocks below a drill bit (109), drilling a plurality of cylindrical rock samples from the inside of the rock blocks (110) by using the drill bit (109), and simultaneously carrying out external dust removal through a dust removal module (2);
Step two, a drill bit (109) ascends, rock waste is taken away, a wet and dry circulation condition simulation module (3) is moved to the position right below a drilling sample module (1), a small jack (105) is utilized to push a rock sample into a rock sample sleeve (302) of the wet and dry circulation condition simulation module (3), and the wet and dry circulation condition simulation module (3) is moved to the position below a sampling and lofting module (4);
Step three, a wet and dry circulation condition simulation module (3) stores water, an air compressor (303) is utilized to simulate the bank slope stress of a bank slope hydro-fluctuation belt of the pumped storage power station in a pressurized mode, then water is drained, and an air blower (305) is utilized to perform air drying, so that one wet and dry circulation is completed;
and fourthly, clamping the rock sample sleeve (302) through the sampling and lofting module (4), taking out the rock sample from the rock sample sleeve (302), performing nuclear magnetic resonance scanning on a plurality of sections, and extracting pore and crack distribution of the rock sample.
8. The method for using the undisturbed accurate sample preparation device for the reservoir bank land and water fluctuation belt rock is characterized by further comprising a fifth step, wherein the fifth step is that a rock sample is put back into a rock sample sleeve (302), a wet and dry circulation condition simulation module (3) is put back by a sampling and lofting module (4), the third step to the fifth step are repeated until the change rate DeltaT of the pore and crack distribution of the same section of the same rock sample is less than or equal to 1%, the wet and dry circulation is stopped, and the change process and evolution rule of the pore and crack distribution under the condition of the wet and dry circulation of the reservoir bank land and water fluctuation belt rock are analyzed according to the result of the wet and dry circulation.
9. The method for using the undisturbed accurate sample preparation device for the rock of the water-level fluctuation belt of the reservoir bank slope according to claim 7, wherein in the second step, firstly, the dust removal module (2) is removed through the sliding rail (111), the waste material of the rock block (110) is removed, and then the box-shaped structure of the wet-dry circulation condition simulation module (3) is inserted into the device from the gap between the sample preparation module (4) and the drilling module (1) and is installed on the sliding rail (111).
10. The method for using the undisturbed accurate sample preparation device for the reservoir bank slope hydro-fluctuation belt rock, which is disclosed in claim 7, is characterized in that the sliding plate (301) is opened in a sliding manner to open the wet and dry circulation condition simulation module (3), after a rock sample is put in, the sliding plate (301) is closed in a sliding manner to close the top surface of the wet and dry circulation condition simulation module (3), and the top surface of the wet and dry circulation condition simulation module (3) is kept closed in the wet and dry circulation process.
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| CN104792573A (en) * | 2015-04-23 | 2015-07-22 | 中国石油天然气股份有限公司勘探开发研究院廊坊分院 | Dustless rock core drilling machine |
| CN110159264A (en) * | 2018-01-15 | 2019-08-23 | 高强 | A kind of hard rock soil layer chisel bit used for geological prospecting |
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| US8555561B2 (en) * | 2011-08-01 | 2013-10-15 | Source Of Pride, Llc | Apparatus for supporting a cemetery headstone and method of fabricating same |
| CN102435480B (en) * | 2011-09-27 | 2013-03-13 | 三峡大学 | Triaxial test device and test method for simulating wet and dry circulation of rock in fluctuation zone of reservoir |
| CN111721632B (en) * | 2020-06-11 | 2021-06-04 | 重庆大学 | Drilling pressure integrated test device and method for simulating rock burst |
| CN215931352U (en) * | 2021-09-24 | 2022-03-01 | 孟庆斋 | Geological exploration rock sampling equipment |
| CN115406729A (en) * | 2022-06-02 | 2022-11-29 | 中海石油(中国)有限公司 | A preparation method of stratum rock samples, rock samples and its simulated drilling observation method |
| CN115931435A (en) * | 2023-01-31 | 2023-04-07 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队(山东省地矿工程勘察院) | Rock mass crack reconnaissance sampling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104792573A (en) * | 2015-04-23 | 2015-07-22 | 中国石油天然气股份有限公司勘探开发研究院廊坊分院 | Dustless rock core drilling machine |
| CN110159264A (en) * | 2018-01-15 | 2019-08-23 | 高强 | A kind of hard rock soil layer chisel bit used for geological prospecting |
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