CN112482155B - A road construction method of road-bond rubber pavement for suppressing dust and environmental protection transportation - Google Patents

Abstract

The invention discloses a Lubang rubber pavement construction method for suppressing dust and environmental protection transportation. Construction lofting, material preparation and mixing, paving and leveling, rolling, and curing; the construction process of the upper solidified treatment layer is mixed with cement, mixed with curing agent, secondary mixing by mixer, shaping, rolling, and curing; Due to the existence of Lubang glue, the road-bonded glue road obtained after the construction method of the transported Lubang rubber pavement is carried out, and the mining trucks are more and more compacted under heavy-duty transportation. It solves the problems of long construction period of cement pavement and inability of asphalt pavement to withstand pressure, and avoids the occurrence of dust on cement pavement and asphalt pavement.

Description

A road construction method of road-bond rubber pavement for suppressing dust and environmental protection transportation

technical field

The invention relates to a road-bonding rubber pavement construction method for suppressing dust and environmental protection transportation, and belongs to the technical field of road construction.

Background technique

When mining, the road needs to be constructed first, and then the ore material is transported outside the mining area by transport vehicles. At present, asphalt and cement are often used for road construction. The construction period of cement pavement is long, and the transport vehicles are heavy Under the heavy load of transportation, the cement pavement is easy to raise dust, causing pollution to the residents living around the road; the asphalt is prone to deformation and damage under the heavy load of the transport vehicle. The friction between the rollers of the transport vehicle and the gravel particles will also easily raise dust and cause pollution to the residents living around the road.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problems, the present invention provides a road construction method of Lubang rubber pavement for suppressing dust and environmental protection transportation.

The present invention is achieved through the following technical solutions.

The present invention provides a road construction method for Lubang rubber pavement for suppressing dust and environmental protection transportation, which is characterized by comprising: a construction process for a lower solidified treatment layer and a construction technology for an upper solidified treatment layer;

The construction process of the lower solidified treatment layer includes preparing the gravel layer, setting out the construction, preparing the material and mixing the mixture, paving and leveling, rolling, and curing;

The construction process of the upper solidified treatment layer is adding cement, adding curing agent, secondary mixing by mixer, shaping, rolling, and health preservation.

The beneficial effect of the present invention is that: the road-bonding rubber pavement obtained after the road-bonding rubber pavement construction method for suppressing fugitive dust and environmental protection transportation is completed, due to the existence of the road-bonding glue, the mining truck is more compacted and stronger under heavy-load transportation, and at the same time, it can Effectively suppress dust, and play a role in dust reduction. It solves the problems of long construction period of cement pavement and inability of asphalt pavement to withstand pressure, and avoids the occurrence of dust on cement pavement and asphalt pavement.

Description of drawings

Figure 1 is a schematic top view of the haul road structure used in the construction and application of Lubang rubber pavement;

Figure 2 is a schematic cross-sectional view of the haul road structure and installation of street lamps used in the construction and application of Lubang rubber pavement;

Figure 3 is a schematic cross-sectional view of the haul road structure installation sprayer haul road used in the construction and application of Lubang rubber pavement;

Figure 4 is a schematic diagram of the cross-section of the transportation road structure planting turf and shrubs used in the construction and application of Lubang rubber pavement;

Figure 5 is a schematic cross-sectional view of the haul road structure DCS control system, sprayer, dust detector, and collection tank used in Lubang rubber pavement construction;

Figure 6 is a schematic structural diagram of the installation and adjustment device for the drainage ditch of the transportation road structure used in the construction of Lubang rubber pavement;

Detailed ways

The technical solutions of the present invention are further described below, but the claimed scope is not limited to the description.

The invention relates to a road construction method for Lubang rubber pavement for suppressing dust and environmental protection transportation, including a construction process for a lower solidified treatment layer and a construction technology for an upper solidified treatment layer;

The construction process of the lower curing treatment layer includes:

Preparing the gravel layer: level the gravel on the roadbed, and use a 12t or more road roller to statically compact it until the surface of the gravel layer has no wheel marks, so as to ensure the proper road arch;

Preferably, an anti-seepage geomembrane is laid on the gravel layer, which is pressed with sand bags after laying, and solidified soil is laid after welding between the anti-seepage geomembranes. The seepage geomembrane can prevent the water flow from seeping into the gravel layer. .

Preferably, when preparing the crushed stone layer for rolling, if a "spring" phenomenon occurs in part of the crushed stone layer, it should be processed by excavation, lime or cement refilling to ensure the strength of the crushed stone layer after rolling.

Construction stakeout: restore the center line on the gravel layer, and set up an indicator pile every 15-20m on both sides of the gravel layer in the straight line section of the center line. .

Prepare and mix the mixture: first, dry the plain soil, and pick out the roots, turf and other sundries; secondly, prepare materials according to each cubic meter of plain soil: lime: curing agent is 7000:3000:1.5; Soil and lime are mixed for 1 to 2 times at a ratio of 70:30 and piled up. During the process, the large-sized soil naturally slides down, and then the bulldozer is used to discharge pressure and crush until the maximum particle size of the pile does not exceed 15mm; then , add water and mix for no less than 3 times until uniform, the moisture content is 1-2%, the maximum particle size of the lime soil is not more than 15mm, and it is suffocated for 1-2d; 1 ratio is diluted and then sprayed into the lime soil evenly. After the initial setting of the road gang glue curing agent is added for 40 minutes, continue to mix for no less than 3 times.

Preferably, when plain soil is mixed with lime, add 70% to 100% of a predetermined amount of lime to mix for the first time, and let it stagnate for 1 to 2 days. The higher the index is, the more difficult it is to mix, and the mixing speed of plain soil and lime is improved.

Paving and leveling: The mixed material is transported to the road. In the straight section, the grader is leveled from both sides to the center of the road; in the flat curve, the leveler is leveled from the inside to the outside; the bulldozer is used to level the road section at the beginning. Quickly release the pressure once to expose potential unevenness; for local low-lying places, the surface layer should be loosened by more than 5cm, and leveled with a new mixing mixture; then use a grader to shape again, and the raised material should be scraped directly Outside the way, there should be no thin layer filling phenomenon; each shaping should reach the specified slope and road arch, and it should be noted that the joints must be smoothed out.

Rolling: After shaping, when the optimum water content of the mixture is 1% to 2%, it should be rolled with a light-duty road roller and a 12t roller immediately. After static pressing twice, a three-wheel roller over 18t should be used Rolling without vibration, should be rolled from both sides to the center of the road, overlapping 1/2 of the wheel width, the rear wheel must exceed the joint of the two sections, and rolled 6 to 8 times; the rolling speed of the road roller , 1.5 ~ 1.7km/h is appropriate for the first two times, and 2.0 ~ 2.5km/h is appropriate after that.

Preferably, in the rolling step, the number of times each part is rolled should be the same as possible, and the two sides of the road should be pressed more than 2 to 3 times; Turn around or brake suddenly, the surface of the cured layer should not be damaged. During the rolling process, the surface of the cured layer should always be kept moist. If the water evaporates too quickly, a small amount of water should be added in time, but it is strictly forbidden to sprinkle a lot of water for rolling. ; Before the end of the rolling, use a grader to finish leveling again to make it longitudinally comfortable and the road arch meets the design requirements; the final leveling should be carried out carefully, and the partially raised part must be scraped off and swept out of the road; At the place, no repairs are being carried out, and it can be left to be handled when the upper layer is paved.

Health preservation: The road after the rolling is carried out for 7 days of watering maintenance. The watering should not be too wet or dry and wet. After each watering, two-wheel road rollers should be used to compact the surface layer.

The construction process of the upper cured treatment layer on the completed lower cured treatment layer includes:

Add cement: place unsealed cement bags on the surface of the lower solidified layer, and spread the cement powder evenly on the surface of the lower solidified layer. The lime soil and cement are mixed evenly according to the volume ratio of 95:5, and the bulldozer discharge pressure is positive.

Add curing agent: The road gang glue curing agent and water are diluted at a ratio of 150 to 200:1, and sprayed evenly on the surface of the lime soil layer after pressure relief; as an option, when spraying the curing agent aqueous solution, the spraying should be uniform and not omitted. Do not stop, should prevent excessive spraying.

Secondary mixing of the mixer: The mixer stirs the lime-soil layer sprayed with the curing agent from both sides to the center, and destroys the lower solidified layer. Make the particles in the upper and lower layers adsorb tightly;

Preferably, the depth of the damaged lower solidified treatment layer is 1cm; the mixing should overlap and penetrate, and must not be mixed, and the mixing color of the solidified mixture should be consistent, and the half-sum should not be less than three times or the particle size should not exceed 15mm end.

Shaping: Shaping again with a grader, the high discharge material should be scraped out of the road directly, and a thin layer should not be formed; the shaping should reach the specified slope and road arch, and it should be noted that the joints must be smoothed according to the trend.

Rolling: After shaping, when the moisture content of the mixture is the optimum moisture content of 1% to 2%, it should be rolled immediately with a light-duty road roller in conjunction with the full width of a 12t roller. The three-wheel road roller is subjected to strong vibration for rolling, and the rolling speed of the road roller is preferably 1.5-1.7 km/h for the first two times, and 2.0-2.5 km/h for the later times;

Preferably, during the rolling, it is strictly forbidden for the road roller to turn around or brake suddenly on the completed or rolling road section, and it should be ensured that the surface of the cement, lime, and gravel soil cured by the curing agent is not damaged; It is leveled again to make it longitudinally comfortable, and the road arch meets the design requirements.

Health preservation: The road after the rolling is carried out for 7 days of watering maintenance. The watering should not be too wet or dry and wet. After each watering, two-wheel road rollers should be used to compact the surface layer.

Preferably, in order to prevent shrinkage cracks during the health preservation period, cover the site soil or cover with geomembrane for water retention and health preservation measures to avoid sun exposure. During the health preservation period, except for sprinklers, traffic should be closed; if the plasticity index is too large, the To prevent cracks, watering should not be interrupted, especially at high temperatures.

As a preference, the road gang glue curing agent should be diluted with water in a volume ratio of 150-200:1. When diluting the concentrated solution, the curing agent concentrate should be added to water, and water should not be added to the curing agent concentrate. Prevents splashing due to exothermic dilution.

After the above-mentioned road-bond rubber pavement construction method for suppressing dust and environmental protection transportation is completed, the road-bonding rubber pavement obtained. Due to the existence of road-bonding rubber, the mining trucks are more compacted and stronger under heavy-duty transportation, and at the same time, they can effectively suppress dust and reduce the occurrence of dust. to the effect of dust suppression. It solves the problems of long period of cement pavement construction and the inability of asphalt pavement to withstand pressure, and avoids the occurrence of dust on cement pavement and asphalt pavement.

As the application of the Lubang rubber pavement of the present invention, the following provides the structure of the road surface used on the road after the Lubang rubber pavement is constructed.

See Figures 1 to 6.

An intelligent, energy-saving, environment-friendly, and safe transportation road structure for mining operations, comprising: a side slope 1, a drainage ditch 2 is arranged at the lower foot of the side slope 1; A safety anti-collision wall 4 is arranged on the outer side of the rubber road 3; the safety anti-collision wall 4 is installed with a plurality of street lamps 5 and a plurality of interval sprayers 6. There is an interval space on the inner surface of the anti-collision wall 4 for the transport vehicle to pass; the water supply pipeline, power supply line and control line 12 are embedded in the safety anti-collision wall 4 to prevent the water supply pipeline, power supply line and control line from occupying other spaces;

A dust detector 7 is installed on the street lamp 5 and the side slope 1. The dust detector 7 detects the dust on the road surface of the road 3. The control line 12 is connected to the dust detector 7 through the road 3 and the bottom of the drainage ditch 2. ;

The top of the side slope 1 is provided with a collection tank 8, and a pump is installed in the collection tank 8, and the pump is communicated with the sprayer 6 through a pipeline installed with an electric control valve; Water supply, reduce the energy consumption of the pump, and achieve the effect of further energy saving.

The upper layer of the Lubang rubber pavement 3 is an inclined surface inclined to the drainage ditch 2 with a slope coefficient i of 2%, so that the water flow flows from the upper layer of the Luban rubber pavement 3 to the drainage ditch 2, and the drying of the Luban rubber pavement 3 is improved. The degree of wear resistance and anti-skid safety; the end of the drainage ditch 2 is provided with a reservoir, and the reservoir communicates with the collection pool 8 through pipes and pumps.

The dust detectors 7 on the street lamps 5 are separated by 10 meters; the dust detectors 7 on the side slope 1 are separated by 20 meters. The safety anti-collision wall 4 is formed by stacking the soil after excavation and screening of the side slope 1, which improves the utilization of the soil quality of the side slope 1 during excavation and avoids the cost of re-transporting and transporting the soil.

The side of the crash wall 4 is planted with turf 9 , the top of which is planted with shrubs 10 , and the distance between the two shrubs is 2.5 meters. The spacing should be determined according to the size of the shrubs to be planted; the turf 9 and the shrub 10 can absorb the exhaust gas emitted by the transport vehicle for photosynthesis, and the randomly distributed grass leaves of the turf 9 and the randomly distributed leaves of the shrub 10 rub against the transport vehicle and Lubang Road 3 The generated noise and sound waves are absorbed to further reduce the noise of the transportation road. The water vapor discharged by the transpiration of the turf 9 and the shrubs 10 and the dust generated by the friction between the transportation vehicle and the Lubang rubber pavement 3 are mixed and condensed to further reduce the dust.

The safety anti-collision wall 4 has a cone-shaped cross-section with a height of 1.2 to 2 meters, which improves the protection of the safety anti-collision wall 4 against transport vehicles, and at the same time makes the safety anti-collision wall 4 structurally stable.

It also includes a DCS control system. The data output end of the dust detector 7 is connected to the input end of the DCS control system through the control line 12, and the data output end of the DCS control system is connected to the data input end of the sprayer 6, the pump and the electric control valve through the control line 12. connect.

The plurality of sprayers 6 are spaced 5 meters apart, and can be adjusted according to actual conditions. The sprayers 6 are supplied with water from a collection tank 8 that collects rainwater and is located at a high level.

A water level detector 11 is installed in the collection tank 8 , and the water level detector 11 is connected to the DCS control system through wires.

The slope coefficient i of the slope 1 and the lower part of the slope 1 is 1:0.3, which improves the flow rate of the water flow from the slope 1 to the drainage ditch 2, and prevents the water body from infiltrating on the slope 1 and causing the collapse of the slope 1. .

The drainage ditch 2 is provided with an adjustment device for buffering rainwater surges. The adjustment device includes two retractable plates 21, a support rod 23 with a rotatable pulley 22 installed on the top, and a water absorption body 25. 21 consists of two plates of different sizes that can be telescopically sleeved. The plate body 21 is provided with a through hole, and the two plate bodies 21 can be rotated and hinged. Each plate body 21 is fixed at the hinge, and the two plate bodies 21 are respectively distributed on the slope foot of the lower part of the side slope 1 and on the Lubang rubber pavement 3; when it rains heavily, the water absorbing body 25 absorbs water to a certain weight and pulls the two plate bodies by gravity 21 stretches and tilts, and the influx formed by heavy rain on the slope 1 obtains a circular buffer on the inclined plate body 21. At the same time, the influx of impurities such as dead branches circulates in the plate body 21, and the through holes of the plate body 21 filter the rainwater. In the drainage ditch 2, impurities such as dead branches are mixed in the water flow to avoid blocking the through holes of the plate body 21, and the accumulation and blockage of impurities such as dead branches in the drainage ditch 2 are avoided, and at the same time, the heavy rainwater on the slope 1 is reduced. The formed surge scours the toe of the lower part of the side slope 1 to ensure the performance safety of the road.

After the rain stops, the water absorbing body 25 is dehydrated, and the plate body 21 automatically descends and retracts under gravity to form a flat plate covering the drainage ditch 2 .

A method for using intelligent, energy-saving, environment-friendly, and safe transportation roads for mining operations, comprising the following steps:

Step 1, energize each electrical equipment, and the dust detector 7 detects the dust generated by the transport vehicle on the Lubang rubber road 3, and the detected data is connected to the DCS control system through the control line 12;

Step 2, when the dust detection data detected by the dust detector 7 is ≥ 10mg/m ³ , the DCS control system controls the sprayer 6 to obtain water to spray and reduce the dust on the Lubang rubber pavement 3;

Step 3, when the dust detection data detected by the dust detector 7 is <10mg/ ^m3 , the DCS control system controls the sprayer 6 to stop water to spray and dust the Lubang rubber pavement 3;

Step 4: After the water level detector 11 in the collection tank 8 detects that the water level in the collection tank 8 drops, the DCS control system sends out an alarm message, and the collection tank 8 is replenished with water from the reservoir through a pump or manually using a sprinkler.

Claims (9)

1. A road side glue road surface construction method for restraining dust emission and environment-friendly transportation is characterized by comprising the following steps: a lower curing layer construction process and an upper curing layer construction process;

the construction process of the lower curing treatment layer comprises the steps of preparing a gravel layer, construction lofting, preparing materials, mixing, paving, leveling, rolling and curing;

the upper curing treatment layer construction process comprises the steps of adding cement and curing agent, and performing secondary mixing, shaping, rolling and curing by a mixer;

the material preparation and mixture mixing process of the lower layer solidification treatment layer construction comprises the following steps: taking the sundries-free plain soil for airing, and removing sundries such as tree roots, turf and the like; according to each cubic meter of plain soil: lime: the curing agent was 7000: 3000: 1.5 preparing materials; when the plain soil and lime are piled and stirred, adding 70-100% of lime with preset amount for the first time for stirring, and tightly placing for 1-2 d; then, supplementing the required lime, and then carrying out secondary mixing;

the ratio of the plain soil to the lime is 70: 30 mixing and stirring for 1-2 times, stacking and stirring, discharging pressure, and grinding until the maximum particle size of the stacked and stirred materials is not more than 15 mm; adding water, mixing for no less than 3 times until the mixture is uniform, wherein the water content rate is 1-2%, the maximum particle size of the lime soil is no more than 15mm, and tightly placing for 1-2 d; and (3) mixing the roadside glue curing agent and water according to the ratio of 150-200: diluting according to the proportion of 1, uniformly spraying into the lime soil, and continuously stirring for not less than 3 times after the lime soil is initially solidified by adding the curbstone adhesive curing agent for 40 min;

the road side rubber pavement structure further comprises a drainage ditch (2) after the road side rubber pavement (3) obtained by the curing step of the upper curing treatment layer construction process is finished, the road side rubber pavement (3) is positioned outside the drainage ditch (2), and water flows into the drainage ditch (2) from the upper layer of the road side rubber pavement (3);

install on escape canal (2) and surge the adjusting device who plays the buffer memory to the rainwater, adjusting device includes that bracing piece (23), the body (25) that absorbs water of rotatable movable pulley (22) are installed to two telescopic plate bodies (21) itself, top, plate body (21) are equipped with the through-hole by the scalable registrate of two boards of variation in size, and two rotatable articulations of plate body (21), the body (25) that absorb water the sponge constitutes are fixed through locating with two plate body (21) are articulated around stay cord (24) on movable pulley (22).

2. The method for constructing a lubang rubber pavement for inhibiting dust emission in environment-friendly transportation according to claim 1, wherein the preparation gravel layer of the process for constructing the lower curing treatment layer comprises the following steps: paving broken stones on the roadbed for leveling, and statically rolling by adopting a road roller of 12t or more until no wheel tracks exist on the surface of the broken stone layer, so as to ensure due road arches.

3. The method for constructing a lubang rubber pavement for inhibiting dust emission in environment-friendly transportation according to claim 1, wherein the construction layout of the process for constructing the lower curing treatment layer is as follows: and drawing a central line on the gravel layer, arranging an indicating pile on each 15-20 m of two sides of the straight-line-section gravel layer of the central line, and marking a design elevation on the indicating pile.

4. The method for constructing a road side rubber pavement for inhibiting dust emission in environment-friendly transportation according to claim 1, wherein the paving and leveling process of the construction of the lower curing treatment layer is as follows: the mixed mixture is transported to a road, and the straight line section is strickled off from two sides to the center of the road; the flat curve is scraped from the inner side to the outer side; pressing once on the initial flat road section; at local low-lying positions, the surface layer is turned over for more than 5cm, and the new mixed mixture is used for leveling; and reshaping once again, and directly scraping the high-out materials out of the way.

5. The method for constructing a road side glue road surface for inhibiting dust emission and environment-friendly transportation according to claim 1, wherein the method comprises the following steps: the rolling process of the construction of the lower curing treatment layer comprises the following steps: after shaping, when the water content of the mixture is 1% -2%, performing static rolling twice by using a light road roller and a 12t road roller, performing rolling without hanging vibration from two sides to the center of the road by using a three-wheel road roller with the width of more than 18t, overlapping 1/2 the wheel width, and rolling 6-8 times by using a rear wheel beyond the joint of two sections; the road roller head is used for 1.5-1.7 km/h twice, and then 2.0-2.5 km/h;

curing the construction process of the lower curing treatment layer: and (3) carrying out water spraying maintenance on the road for 7 days after rolling, keeping the road to be continuously and completely wet by spraying water, and compacting the surface layer by using a two-wheeled road roller after each water spraying.

6. The method for constructing a road side glue road surface for inhibiting dust emission and environment-friendly transportation according to claim 1, wherein the method comprises the following steps: the blended cement of the upper curing treatment layer construction process is as follows: uniformly spreading the cement bags on the surface of the lower layer solidification treatment layer after the cement bags are drained on the surface of the lower layer solidification treatment layer until no blank and no water concentration point exist, and then spreading the lime soil and the cement according to the volume ratio of 95: 5, uniformly mixing, and rightly discharging by a bulldozer;

the doped curing agent of the upper curing treatment layer construction process comprises the following steps: the road side glue curing agent and water are mixed according to the ratio of 150-200: 1, diluting and uniformly spraying the solution on the surface after pressure discharge.

7. The method for constructing a road side glue road surface for inhibiting dust emission and environment-friendly transportation according to claim 1, wherein the method comprises the following steps: the secondary mixing of a mixer of the construction process of the upper curing treatment layer comprises the following steps: stirring the lime soil layer sprayed with the curing agent from two sides to the center by a stirrer, and damaging a lower curing treatment layer;

the shaping of the construction process of the upper curing treatment layer comprises the following steps: the shaping of the previous step is repeated once, and the height of the shaping is higher than that of the material scraping way; and the joint must be smooth after the road is shaped to the specified slope and arch.

8. The method for constructing a lubang glue road surface for inhibiting dust emission in environment-friendly transportation according to claim 1, wherein the rolling process of the upper curing treatment layer construction comprises the following steps: after shaping, when the water content of the mixture is 1% -2%, the light road roller is matched with a 12t road roller to perform static rolling twice, then a three-wheel road roller with the speed of more than 18t is adopted to perform hanging strong vibration rolling twice, the speed is 1.5-1.7 km/h for the first two times, and the speed is preferably 2.0-2.5 km/h for the later time.

9. The method for constructing a lubang glue road surface for inhibiting dust emission in environment-friendly transportation according to claim 1, wherein the curing of the process of the upper curing treatment layer construction is as follows: and (3) spraying water for 7 days after rolling, and compacting the surface layer by using a two-wheel road roller after each time of spraying water.

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