CN117627546B - Telescopic electrode delivery protection sleeve device suitable for tunnel drilling electrical detection - Google Patents

Abstract

The invention discloses a telescopic electrode delivery protection sleeve device suitable for tunnel drilling electrical detection, which relates to the technical field of tunnel cross-hole advanced detection and comprises the following components: surrounding rock; and two sleeve assemblies are arranged. The telescopic electrode delivery protection sleeve device suitable for tunnel drilling electrical detection is characterized in that the structure of the sleeve assembly is a telescopic sleeve when the telescopic electrode delivery protection sleeve device is used, the sleeve assembly consists of four graded sleeves with decreasing inner diameters and a telescopic connecting mechanism, the graded sleeves are sleeve bodies, the telescopic connecting mechanism is a connecting mechanism body, the diameter of each sleeve body is gradually reduced, two adjacent sleeve bodies are connected through the connecting mechanism body, in particular to threaded connection or bump clamping and firm connection, the four sleeve bodies are pulled out to extend the sleeve bodies when the telescopic electrode delivery protection sleeve device is used, and the bumps are pulled out from positioning holes to be matched with threaded rotation after the telescopic electrode delivery protection sleeve device is used.

Description

A retractable electrode delivery protection casing device suitable for tunnel drilling electrical detection

Technical Field

The invention relates to the technical field of tunnel cross-hole advance detection, and in particular to a retractable electrode delivery protection casing device suitable for tunnel drilling electrical detection.

Background technique

The tunnel borehole electrical observation method refers to an electrical exploration method in which boreholes and electrodes are arranged in front of the heading face, and detection is carried out between the boreholes to achieve poor geological imaging in front of the tunnel heading face. In the actual engineering detection process, casings are usually placed in the boreholes in advance to avoid hole collapse, and PVC non-metallic casings are often used in borehole electrical and electromagnetic detection to reduce interference with the electric and electromagnetic fields. The conventional scheme for tunnel borehole electrical detection is: several PVC pipes are tied and connected end to end in sequence, extended to the same depth as the borehole, and then the cable is tied to the long PVC pipe, and the PVC pipe is sent into the borehole to achieve the layout of the electrode in the borehole in front of the tunnel. After the electrode is laid, a coupling agent is injected into the borehole, and electrical detection is carried out to collect data at the same time.

However, the existing technical methods face the following problems: first, the space in the borehole is small and the rock wall in the hole is rough. The two adjacent PVC pipes are overlapped and bound end to end, and the PVC pipes are staggered end to end at the connection. When the pipes are taken out after the detection, the connection is easily blocked by the rough rock wall. The remaining PVC pipes cannot be taken out smoothly and cannot be reused, and the new PVC pipes are blocked from entering the borehole again, affecting the subsequent detection work. Second, the on-site construction personnel use nylon ropes or tapes to tie the cables to the PVC pipes to fix the cables in the PVC pipes. After the detection, the cables are removed. The binding and removal of the cables are all done manually, which is difficult to achieve. Due to the large number of bindings, it takes a lot of time, which affects the efficiency of detection. Thirdly, after the electrode is laid out, a coupling agent is injected into the borehole to ensure that the detection electrode and the surrounding rock can be in good contact. However, due to the fluidity of the coupling agent, the coupling agent will leak out of the hole during the injection process. This problem is particularly serious when the borehole is inclined upward, resulting in a waste of coupling agent. At the same time, the coupling agent leaks out of the face from the borehole, polluting the environment at the tunnel construction site. At the same time, the overflow of the coupling agent will cause the electrode located deep in the borehole to have insufficient coupling agent to ensure good coupling with the surrounding rock, ultimately affecting the quality of the observation data.

Therefore, we propose a retractable electrode delivery protection sleeve device suitable for tunnel boring electrical detection in order to solve the above problems.

Summary of the invention

The object of the present invention is to provide a retractable electrode delivery protection sleeve device suitable for tunnel drilling electrical detection, so as to solve the problem that the existing PVC pipe connection binding is not convenient for subsequent removal and wastes labor and coupling agent as mentioned in the above background technology.

To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a retractable electrode delivery protection casing device suitable for tunnel drilling electrical detection, comprising: surrounding rock; casing assembly, wherein two casing assemblies are provided, and the two casing assemblies are symmetrically arranged, and the casing assembly includes four casing bodies, and the diameters of the four casing bodies are arranged in descending order, and one end of the four casing bodies is fixedly connected with the casing bottom thread, wherein the outer surfaces of the three casing bottom threads are threadedly connected with the connecting mechanism body, and the outer surfaces of the three connecting mechanism bodies are fixedly connected with a plurality of protrusions, and the outer surfaces of the four casing bodies are provided with a plurality of positioning holes, and the inner walls of the positioning holes are engaged with the outer surfaces of the protrusions.

Preferably, a face is provided on one side of the surrounding rock, two drilling channels are opened on the outer surface of the face, the two casing assemblies are respectively arranged inside the two drilling channels, the face is a surface wall inside the surrounding rock, two inclined drilling channels are arranged along the front of the face, the length of the two drilling channels is 20 meters, and they are respectively inclined ten degrees upward and ten degrees downward along the tunnel axis, and the two electrodes are one meter apart.

Preferably, the outer surfaces of the three connecting mechanism bodies are each provided with a cable hole, and a cable is arranged between the inner walls of the three cable holes. The outer diameter of the selected cable is one centimeter, and the cable can pass through multiple connecting mechanism bodies through the cable holes.

Preferably, connecting column assemblies are installed on the outer surfaces of the two sleeve bodies, and the two connecting column assemblies include cable clamps. The two cable clamps are installed on the outside of the cable line, and the cable line can be tightly clamped by the cable clamps by pressing inward against the opening of the cable clamps. The opening of the cable clamp is a circular ring, and its inner diameter is equal to the outer diameter of the cable line. Anti-slip grooves are provided on the inside. The opening size of the cable clamp is slightly smaller than the outer diameter of the cable line. Compared with the traditional method of manually tying the cable to the PVC pole with several nylon ropes, this method is simple to operate and saves the time of binding and disassembly.

Preferably, fixing blocks are welded to the outer surfaces of the two cable clamps, fixing bolts are welded to the outer surfaces of the two fixing blocks, and the outer surfaces of the two fixing bolts are movably connected to the inner walls of the two positioning holes respectively. By passing the fixing bolt through one of the positioning holes, the cable clamp is facing the inside of the sleeve body, so that the cable clamp can clamp the cable line, and by using a fixing nut to rotate and sleeve it on the fixing bolt, one of the connecting column assemblies is located at the bottom end of the first-level sleeve body, and the other connecting column assembly is located at the top end of the fourth-level sleeve body.

Preferably, the outer surfaces of the two fixing bolts are both slidably sleeved with buffer gaskets, and the outer surfaces of the two fixing bolts are both threadedly sleeved with fixing nuts, the fixing bolts pass through the sleeve wall and are connected to the fixing nuts, and there are buffer gaskets between the fixing nuts and the sleeve wall to play a buffering role, and the connecting column assembly is fixed to the specified positions at both ends of the sleeve by tightening the fixing nuts.

Preferably, the outer surface of the other casing bottom thread is threadedly connected with a sealing component, and the sealing component includes a pressure plate, a grouting hole is opened at the center of the outer surface of the pressure plate, and a cable sealing hole is opened on the outer surface of the pressure plate near the grouting hole. The sealing component is used to seal the coupling agent to prevent the coupling agent from flowing back and causing waste. The coupling agent injected by the grouting pipe can flow into the interior of the casing body through the grouting hole, thereby reaching the drilling channel.

Preferably, a casing connector is fixedly installed on one side of the pressing plate, and a grouting pipe is fixedly connected to the other side of the pressing plate. A connecting sleeve is threadedly sleeved on one end of the grouting pipe, and a discharge pipe is fixedly connected to the outer surface of the connecting sleeve. The two casing assemblies are respectively pushed into two inclined drilling channels, and the grouting pipe is connected to an external grouting machine to realize the introduction of the coupling agent into the drilling channel and start the detection process. After the detection is completed, the waste liquid to be discharged can be discharged through the discharge pipe and collected for centralized treatment, thereby reducing the pollution to the environment caused by the used coupling agent flowing out of the drilling channel.

Preferably, the outer surface of the grouting pipe is fixedly connected to a connecting pipe, and a switch knob is provided at one end of the connecting pipe. After the detection is completed, the waste coupling agent can be discharged by turning on the switch knob, and when the coupling agent is injected into the interior of the casing body, the switch knob is closed to prevent the coupling agent from flowing back.

Preferably, a sealing assembly is fixedly connected to the other side of the pressure plate near the cable sealing hole, and the sealing assembly includes a connecting belt, a baffle is fixed to one end of the connecting belt, and a cable sealing piece is adhered to the outer surface of the baffle, and the outer surface of the cable sealing piece is engaged with the inner wall of the cable sealing hole. The cable sealing piece and the baffle are both made of flexible materials. By inserting the cable sealing piece into the cable sealing hole, an anti-slip strip is provided on the outer surface of the cable sealing piece, and an anti-slip strip matching the cable sealing piece is provided on the inner wall of the cable sealing hole. The cable sealing piece can be tightly installed, and the cable sealing piece can be conveniently pulled out with the help of the baffle, and the connecting belt can fix the cable sealing piece to prevent it from falling and being lost when it is pulled out.

Compared with the prior art, the present invention has the following beneficial effects:

1. When in use, the structure of the sleeve assembly of the present invention is a retractable sleeve. The sleeve assembly is composed of four graded sleeves with decreasing inner diameters and a retractable connecting mechanism. The graded sleeve is the sleeve body, and the retractable connecting mechanism is the connecting mechanism body. The diameter of each sleeve body gradually decreases, and two adjacent sleeve bodies are connected by a connecting mechanism body, specifically a threaded connection or a projection snap-on connection. When in use, the four sleeve bodies are pulled out to extend them. After use, the projection is pulled out of the positioning hole and the four connected sleeve bodies are disassembled by rotating the thread, which not only facilitates the insertion and removal of the sleeve body in the drilling channel, but also realizes the recycling of the sleeve body. When the sleeve body is pulled out, one end will not be left in the drilling channel, so as to avoid hindering the new PVC pipe from entering the drilling channel again and preventing the subsequent detection work from being affected. The sleeve body is retractable, which is convenient for the transportation and storage of the sleeve body.

2. When in use, by connecting the two connecting column assemblies installed at the top and bottom ends of the extended sleeve body, the fixing process between the cable and the sleeve body is simpler and faster. The cable can be tightly clamped by the cable clamp by pressing it inward against the opening of the cable clamp. The opening of the cable clamp is a circular ring, and its inner diameter is equal to the outer diameter of the cable. Anti-slip grooves are provided on the inside. The opening size of the cable clamp is slightly smaller than the outer diameter of the cable. Compared with the traditional method of manually tying the cable to the PVC pole with several nylon ropes, this method is simple to operate and saves the time of binding and disassembly.

3. When in use, the plugging component at the bottom of the casing body can allow the coupling agent to be injected into the casing body from the grouting pipe and seep out from the positioning holes and other holes of the casing body instead of leaking out at the injection port. This can achieve the plugging of the coupling agent injected during the detection process, especially for the detection of upward inclined drilling channels, saving coupling agent and avoiding the coupling agent from polluting the construction site environment.

4. When in use, the positioning holes arranged on the surface of the casing body are regularly opened along the circumferential direction. The positioning holes can not only engage with the protrusions to fix the connecting mechanism body, thereby controlling the overall length of the casing body, but also serve as flow holes for the injected coupling agent to seep out from the casing body to the drilling channel, so that the coupling agent is injected evenly and not easy to flow back, so as to achieve good contact between the detection electrode and the surrounding rock.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a cross-sectional perspective view of a retractable electrode delivery protection sleeve device suitable for tunnel drilling electrical detection according to the present invention;

FIG2 is a partial perspective view of a sleeve assembly of a retractable electrode delivery protection sleeve device suitable for tunnel drilling electrical detection according to the present invention;

FIG3 is a partially cutaway perspective view of a connecting column assembly of a retractable electrode delivery protection sleeve device suitable for tunnel drilling electrical detection according to the present invention;

FIG4 is an expanded perspective view of a partial structure of a plugging component of a retractable electrode delivery protection sleeve device suitable for tunnel drilling electrical detection according to the present invention;

FIG5 is an expanded perspective view of a sealing component portion of a retractable electrode delivery protection sleeve device suitable for tunnel drilling electrical detection according to the present invention;

FIG6 is a perspective view of the structure of the plugging component of the retractable electrode delivery protection sleeve device suitable for tunnel drilling electrical detection according to the present invention, which is expanded from another angle;

FIG7 is an expanded perspective view of the main structure of the connecting mechanism of a retractable electrode delivery protection sleeve device suitable for tunnel drilling electrical detection according to the present invention;

FIG8 is an expanded stereoscopic view of the structure of the connecting sleeve portion of a retractable electrode delivery protection sleeve device suitable for tunnel drilling electrical detection according to the present invention.

In the figure:

1. Surrounding rock; 2. Face; 3. Drilling channel; 4. Casing assembly; 401. Casing body; 402. Positioning hole; 403. Casing bottom thread; 404. Connecting mechanism body; 405. Bump; 406. Cable hole; 5. Sealing assembly; 501. Pressing plate; 502. Casing connector; 503. Connecting pipe; 504. Cable sealing hole; 505. Switch knob; 506. Grouting pipe; 507. Grouting hole; 6. Sealing assembly; 601. Baffle; 602. Cable sealing piece; 603. Connecting belt; 7. Connecting sleeve; 8. Discharge pipe; 9. Connecting column assembly; 901. Cable clamp; 902. Fixing block; 903. Buffering gasket; 904. Fixing nut; 905. Fixing bolt; 10. Cable.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Please refer to Figures 1-8. The present invention provides a technical solution: a retractable electrode delivery protection casing device suitable for tunnel drilling electrical detection, comprising: surrounding rock 1; casing assembly 4, two casing assemblies 4 are provided, and the two casing assemblies 4 are symmetrically arranged, the casing assembly 4 includes four casing bodies 401, the diameters of the four casing bodies 401 are arranged in descending order, one end of the four casing bodies 401 is fixedly connected with a casing bottom thread 403, wherein the outer surfaces of the three casing bottom threads 403 are threadedly connected with a connecting mechanism body 404, the outer surfaces of the three connecting mechanism bodies 404 are fixedly connected with a plurality of protrusions 405, and the outer surfaces of the four casing bodies 401 are provided with a plurality of positioning holes 402, and the inner walls of the positioning holes 402 are engaged with the outer surfaces of the protrusions 405.

As shown in Figure 1, a tunnel face 2 is set on one side of the surrounding rock 1, and two drilling channels 3 are opened on the outer surface of the tunnel face 2. Two casing assemblies 4 are respectively arranged inside the two drilling channels 3. The tunnel face 2 is a surface wall inside the surrounding rock 1. Two inclined drilling channels 3 are arranged along the front of the tunnel face 2. The length of the two drilling channels 3 is 20 meters, and they are respectively inclined ten degrees upward and ten degrees downward along the tunnel axis. The two electrodes are one meter apart.

As shown in Figures 1-3 and Figure 7, the outer surfaces of the three connecting mechanism bodies 404 are all provided with cable holes 406, and cables 10 are arranged between the inner walls of the three cable holes 406. The outer diameter of the selected cable 10 is one centimeter. The cable holes 406 can allow the cable 10 to pass through multiple connecting mechanism bodies 404.

As shown in Figures 1-3, the outer surfaces of the two sleeve bodies 401 are installed with connecting column assemblies 9, and the two connecting column assemblies 9 include cable clamps 901. The two cable clamps 901 are installed on the outside of the cable 10. The cable 10 can be tightly clamped by the cable clamps 901 by pressing inward against the opening of the cable clamps 901. The opening of the cable clamp 901 is circular, and its inner diameter is equal to the outer diameter of the cable 10. Anti-slip grooves are provided on the inside. The opening size of the cable clamp 901 is slightly smaller than the outer diameter of the cable 10. Compared with the traditional method of manually tying the cable to the PVC pole with several nylon ropes, this method is simple to operate and saves the time of binding and disassembly.

As shown in Figures 1-3, the outer surfaces of the two cable clamps 901 are welded with fixing blocks 902, and the outer surfaces of the two fixing blocks 902 are welded with fixing bolts 905. The outer surfaces of the two fixing bolts 905 are movably connected to the inner walls of the two positioning holes 402 respectively. By passing the fixing bolt 905 through one of the positioning holes 402, the cable clamp 901 is facing the inside of the sleeve body 401, so that the cable clamp 901 can clamp the cable 10. By using the fixing nut 904, it is rotatably sleeved on the fixing bolt 905. One of the connecting column assemblies 9 is located at the bottom end of the first-level sleeve body 401, and the other connecting column assembly 9 is located at the top end of the fourth-level sleeve body 401.

As shown in Figures 1-3, the outer surfaces of the two fixing bolts 905 are both slidably sleeved with buffer washers 903, and the outer surfaces of the two fixing bolts 905 are both threadedly sleeved with fixing nuts 904. The fixing bolts 905 pass through the wall of the sleeve and are connected to the fixing nuts 904. There are buffer washers 903 between the fixing nuts 904 and the wall of the sleeve to play a buffering role. By tightening the fixing nuts 904, the connecting column assembly 9 is fixed at the specified positions at both ends of the sleeve.

As shown in Figures 4-6 and 8, the outer surface of the bottom thread 403 of another casing is threadedly connected with a sealing component 5, and the sealing component 5 includes a pressure plate 501. A grouting hole 507 is opened at the center of the outer surface of the pressure plate 501, and a cable sealing hole 504 is opened on the outer surface of the pressure plate 501 near the grouting hole 507. The sealing component 5 is used to seal the coupling agent to prevent the coupling agent from flowing back and causing waste. The coupling agent injected by the grouting pipe 506 can flow into the interior of the casing body 401 through the grouting hole 507, thereby reaching the drilling channel 3.

As shown in Figures 4-6 and 8, a casing connector 502 is fixedly installed on one side of the pressing plate 501, and a grouting pipe 506 is fixedly connected to the other side of the pressing plate 501. A connecting sleeve 7 is threadedly sleeved on one end of the grouting pipe 506, and a discharge pipe 8 is fixedly connected to the outer surface of the connecting sleeve 7. The two casing assemblies 4 are respectively pushed into the two inclined drilling channels 3, and the grouting pipe 506 is connected to an external grouting machine to realize the introduction of the coupling agent into the drilling channel 3, and the detection process begins. After the detection is completed, the waste liquid that needs to be discharged can be discharged through the discharge pipe 8 and collected for centralized treatment, thereby reducing the pollution to the environment caused by the used coupling agent flowing out of the drilling channel 3.

As shown in FIGS. 4-6 and 8 , the outer surface of the grouting pipe 506 is fixedly connected to a connecting pipe 503, and a switch knob 505 is provided at one end of the connecting pipe 503. After the detection is completed, the waste coupling agent can be discharged by turning on the switch knob 505, and when the coupling agent is injected into the interior of the casing body 401, the switch knob 505 is closed to prevent the coupling agent from flowing back.

As shown in Figures 5 and 6, a sealing component 6 is fixedly connected to the other side of the pressure plate 501 near the cable sealing hole 504. The sealing component 6 includes a connecting belt 603, and a baffle 601 is fixed to one end of the connecting belt 603. A cable sealing piece 602 is pasted on the outer surface of the baffle 601. The outer surface of the cable sealing piece 602 is engaged with the inner wall of the cable sealing hole 504. The cable sealing piece 602 and the baffle 601 are both made of flexible materials. By inserting the cable sealing piece 602 into the cable sealing hole 504, an anti-slip strip is provided on the outer surface of the cable sealing piece 602, and an anti-slip strip matching the cable sealing piece 602 is provided on the inner wall of the cable sealing hole 504. The cable sealing piece 602 can be tightly installed, and the cable sealing piece 602 can be easily pulled out with the help of the baffle 601, and the connecting belt 603 can fix the cable sealing piece 602 to prevent it from falling and being lost when pulled out.

The use method and working principle of the device are as follows: the tunnel face 2 is a wall inside the surrounding rock 1, and two inclined drilling channels 3 are arranged in front of the tunnel face 2. The length of the two drilling channels 3 is 20 meters, and they are inclined ten degrees upward and ten degrees downward along the tunnel axis respectively. The two electrodes are separated by one meter. The outer diameter of the selected cable 10 is one centimeter. The retractable electrode delivery protection casing device is used to deliver the two cables 10 into the two inclined drilling channels 3 respectively. At the same time, the plugging component 5 is used to plug the coupling agent to prevent the coupling agent from flowing back and causing waste. The length of the four casing bodies 401 of the casing assembly 4 is unified to four meters, and the outer surface of the casing body 401 is provided with a casing wall, and the thickness of the casing wall is unified to One is half a centimeter, and the diameters of the four casing bodies 401 are in a decreasing structure. The outer diameter of the first-level casing body 401 is seven centimeters, the outer diameter of the second-level casing body 401 is six and a half centimeters, the outer diameter of the third-level casing body 401 is six centimeters, and the outer diameter of the fourth-level casing body 401 is five and a half centimeters. The casing body 401 is made of resin material, and a plurality of circular positioning holes 402 are opened on the casing body 401, which are annularly distributed in the radial section of the casing body 401 and equidistantly distributed in the axial direction. The connecting column assembly 9 fixed at the top and the bottom can facilitate the clamping of the cable 10. By passing the fixing bolt 905 through one of the positioning holes 402, the cable clamp 901 is facing the inside of the casing body 401, so that The cable clamp 901 can clamp the cable 10. By using the fixing nut 904 to rotate and sleeve on the fixing bolt 905, one of the connecting column components 9 is located at the bottom end of the first-level casing body 401, and the other connecting column component 9 is located at the top of the fourth-level casing body 401. The cable 10 can be tightly clamped by the cable clamp 901 by pressing inward at the opening of the cable clamp 901. The opening of the cable clamp 901 is circular, and its inner diameter is equal to the outer diameter of the cable 10. The inner side is provided with anti-slip grooves. The opening size of the cable clamp 901 is slightly smaller than the outer diameter of the cable 10. Compared with the traditional method of manually tying the cable to the PVC pole with several nylon ropes, this method is simple to operate, saves the time of binding and disassembly, and is convenient to use. The structure of the connecting mechanism body 404 is a hemispherical structure, and the material used is a tough material. A cable hole 406 is opened in the middle of the connecting mechanism body 404. The inner diameter of the cable hole 406 is three centimeters, and the cable 10 can be passed through the cable hole 406. The inner wall of the connecting mechanism body 404 is provided with a thread, which is connected to the bottom thread 403 of the casing body 401 of the next level. The protrusion 405 can be inserted into a circle of positioning holes 402 at the top of the casing body 401 of the previous level. The connection of the connecting mechanism body 404 realizes the fixation of the two-stage casing body 401. By connecting one end of the grouting pipe 506 to the external grouting machine, and the lower part is rotated and connected to the discharge pipe 8 for discharging waste liquid, the discharge pipe 8 A switch knob 505 is provided on the outer surface, and the waste coupling agent is discharged here after the detection is completed. The diameter of the pressure plate 501 is twelve centimeters, and the outer side of the circular grouting hole 507 in the center of the pressure plate 501 is connected to the grouting pipe 506. The aperture of the cable sealing hole 504 is 1.5 centimeters, and a sealing component 6 is installed on the outer side. The cable sealing piece 602 and the baffle 601 are both made of flexible materials. By inserting the cable sealing piece 602 into the cable sealing hole 504, the outer surface of the cable sealing piece 602 is provided with an anti-slip strip, and the inner wall of the cable sealing hole 504 is provided with an anti-slip strip matching the cable sealing piece 602, so that the cable sealing piece 602 can be tightly installed, and the cable sealing piece 602 can be easily pulled out with the help of the baffle 601. The connecting belt 603 can fix the cable sealing piece 602 to prevent it from falling and being lost when it is pulled out. In addition, the sleeve connector 502 is located on the other side opposite to the pressure plate 501 and the grouting pipe 506, and the inner wall contains threads, which are connected to the primary sleeve body 401. When the device is in use, first, the device is in the initial state, the threads set on the inner wall of each connecting mechanism body 404 and the sleeve bottom threads 403 at the bottom of the next-level sleeve body 401 are in a tightened state, and the protrusion 405 is inserted into the positioning hole 402 at the bottom end of the upper-level sleeve body 401. At this time, the telescopic sleeve body 401 can be folded, and then the primary sleeve body 401 is connected to the sleeve connector 502 through the sleeve bottom threads 403. , extend the cable 10 from the cable sealing hole 504 into the folded sleeve body 401 from the outside, and then fix one end of the cable 10 to the top of the fourth-level sleeve body 401 through the connecting column assembly 9 at the top, then press the protrusion 405 to disengage it from the positioning hole 402 at the bottom of the first-level sleeve body 401, rotate the second-level sleeve body 401, so that the position of the protrusion 405 and the positioning hole 402 are offset, and the second-level sleeve body 401 is pulled out along the inner side of the first-level sleeve body 401 tube wall to the top positioning hole 402, rotate the second-level sleeve body 401, so that the protrusion 405 is stuck in the positioning hole 402 at the top of the first-level sleeve body 401, and the pulling out of the second-level sleeve body 401 is completed. , pull out the third and fourth level casing bodies 401 in turn according to the above order, and fix them to the top of the upper level casing body 401 through the connecting mechanism body 404. Secondly, the casing body 401 is fully extended to the depth of the drilling channel 3, tighten the connecting column assembly 9 at the bottom end of the casing body 401, and fix the other end of the cable 10 to the bottom end of the first level casing body 401. In addition, push the two casing assemblies 4 into the two inclined drilling channels 3 respectively, connect the grouting pipe 506 to the external grouting machine, and realize the introduction of the coupling agent into the drilling channel 3, and start the detection process. Finally, after the detection is completed, turn on the switch knob 505, discharge the waste liquid through the discharge pipe 8 and collect it for centralized treatment, so as to reduce the pollution of the coupling agent to the environment.

Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. A retractable electrode delivery protection sleeve device suitable for tunnelling electrical detection, comprising:

surrounding rock (1);

The sleeve assembly (4), sleeve assembly (4) are provided with two, two sleeve assembly (4) are the symmetry setting, sleeve assembly (4) are including four sleeve pipe body (401), four the diameter of sleeve pipe body (401) is the setting of diminishing in proper order, four the one end of sleeve pipe body (401) all fixedly connected with sleeve pipe bottom screw thread (403), wherein three the surface of sleeve pipe bottom screw thread (403) all threaded connection has coupling mechanism body (404), and the surface fixed connection of three coupling mechanism body (404) has a plurality of lugs (405), and a plurality of locating holes (402) have all been seted up to the surface of four sleeve pipe body (401), the inner wall of locating hole (402) and the surface looks block of lug (405) block, and wherein two the connecting column assembly (9) are all installed to the surface of sleeve pipe body (401), and two the connecting column assembly (9) all are including cable clamp (901), and two cable clamp (901) are all installed in the outside of cable wire (10), two the surface fixed bolt (902) are welded with two outer surfaces (905) of two cable clamp (905) respectively fixed bolt (902) are fixed with two fixed bolt (902) respectively, the outer surfaces of the two fixing bolts (905) are respectively sleeved with a buffer gasket (903) in a sliding mode, and the outer surfaces of the two fixing bolts (905) are respectively sleeved with a fixing nut (904) in a threaded mode;

One side of the surrounding rock (1) is provided with a tunnel face (2), two drilling holes (3) are formed in the outer surface of the tunnel face (2), and two sleeve components (4) are respectively arranged in the two drilling holes (3);

The outer surfaces of the three connecting mechanism bodies (404) are provided with cable holes (406), and cable wires (10) are arranged between the inner walls of the three cable holes (406).

2. The retractable electrode delivery protection sleeve device suitable for tunnelling electrical probing as recited in claim 1, wherein: the other outer surface threaded connection of sleeve pipe bottom screw thread (403) has shutoff subassembly (5), shutoff subassembly (5) are including clamp plate (501), grouting hole (507) have been seted up in the surface center department of clamp plate (501), cable sealing hole (504) have been seted up near grouting hole (507) department to the surface of clamp plate (501).

3. The retractable electrode delivery protection sleeve device suitable for tunnelling electrical probing as recited in claim 2, wherein: one side fixed mounting of clamp plate (501) has sleeve pipe connector (502), the opposite side fixedly connected with slip casting pipe (506) of clamp plate (501), the one end thread bush of slip casting pipe (506) is equipped with adapter sleeve (7), the surface fixed intercommunication of adapter sleeve (7) has blow off pipe (8).

4. A retractable electrode delivery protection sleeve device suitable for tunnelling electrical probing as recited in claim 3, wherein: the outer surface of slip casting pipe (506) is fixed to be linked together and is had connecting pipe (503), one end of connecting pipe (503) is provided with switch knob (505).

5. The retractable electrode delivery protection sleeve device suitable for tunnelling electrical probing as recited in claim 4, wherein: the opposite side of clamp plate (501) is close to cable seal hole (504) department fixedly connected with seal assembly (6), seal assembly (6) are including connecting band (603), one end of connecting band (603) is fixed with separation blade (601), the surface paste of separation blade (601) has cable shutoff piece (602), the surface of cable shutoff piece (602) and the inner wall looks block of cable seal hole (504).