CN218466236U - Trackless transport roadway pavement structure suitable for underground coal mine - Google Patents
Trackless transport roadway pavement structure suitable for underground coal mine Download PDFInfo
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- CN218466236U CN218466236U CN202222214127.6U CN202222214127U CN218466236U CN 218466236 U CN218466236 U CN 218466236U CN 202222214127 U CN202222214127 U CN 202222214127U CN 218466236 U CN218466236 U CN 218466236U
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Abstract
The utility model provides a colliery is trackless haulage roadway road surface structure in pit, trackless haulage roadway bottom plate middle part in pit is equipped with the groove of unloading of preventing and treating the pucking disease, it packs to be equipped with the rubble in the groove of unloading, is equipped with trackless haulage roadway road surface structure in pit in the both sides of unloading the groove, trackless haulage roadway road surface structure in pit includes graded rubble screed-coat, emulsified asphalt rubble seal, cement concrete basic unit and polyethylene road deck; the graded broken stone leveling layer comprises a graded broken stone layer and a broken stone cushion layer; graded broken stones are arranged from the outer side of the underground trackless transportation roadway road surface structure to the side wall of the underground roadway and filled to the same height of the upper surface of the polyethylene road deck. The utility model aims at providing a novel road surface structure to solve the pucking and the basic unit reflection crack scheduling problem of current colliery underworkings road surface structure, have and be fit for borehole operation, construct convenient, make things convenient for maintenance, time limit for a project weak point and reduce advantages such as wasting of resources.
Description
Technical Field
The utility model relates to a colliery is trackless haulage roadway road surface structure in pit belongs to colliery underworkings construction field, is applicable to the colliery underworkings road surface structure of construction cycle weak point, special, the geological conditions of humiture condition complicated and lays.
Background
In recent years, trackless rubber-tyred vehicles are more and more widely applied to coal mines, and underground roadways are mostly constructed by hardening concrete so as to facilitate the running of vehicles. Due to the ground pressure activity and the operation of transportation equipment, the concrete pavement of the roadway is easy to have diseases such as bottom heave and the like, and the passing of the transportation equipment is influenced. The treatment of the diseases not only needs to spend huge cost, but also seriously affects the pavement service performance and the driving safety of the mine rubber-tyred vehicle, even can cause shutdown and production halt of the mine and serious economic loss; in addition, because the cement concrete pavement is relatively difficult to maintain after being damaged, the repair time is long, a long maintenance period is needed after the cement concrete pavement is finished, and meanwhile, the narrow underground space easily causes vehicle interference, so that the normal use of the underground roadway pavement is seriously influenced. Therefore, the adoption of a reliable pavement structure is an effective way for ensuring the normal operation of mining work.
In order to shorten the construction period and deal with special temperature and humidity conditions and ground pressure activities, the conventional engineering usually adopts fabricated concrete slabs or asphalt concrete pavements to pave underground roadway pavements, and a good effect is also obtained, but each paving method has certain defects, such as large weight of the fabricated concrete slabs, inconvenient underground hoisting and high early-stage investment cost; when the asphalt concrete pavement is constructed underground, construction equipment is limited, toxic gas is generated, the discharge is difficult, and the interlayer bonding force is poor, so that the frequency of using the asphalt concrete pavement in an underground roadway is low.
In summary, although some pavement structure schemes and methods are available in underground coal mine pavement engineering and achieve certain effects, under the condition that underground construction conditions are limited, it is difficult to ensure that all control indexes reach standards, and some road sections still have serious problems such as bottom heave and the like in the later period. In view of this, in order to effectively control the bottom heave and other diseases of the roadway floor and deal with special temperature and humidity conditions and ground pressure activities, the invention of a novel pavement structure which is suitable for underground construction conditions, convenient and fast in construction, good in interlayer bonding and capable of effectively slowing down the occurrence of the diseases is urgently needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can be under current construction condition, the prerequisite that does not influence construction period, can the rapid stabilization lay and repair, slow down the novel colliery underworkings of pucking disease and lay road surface structure fast to solve the problem that above-mentioned current tunnel road surface structure appears.
In order to realize the above object, the utility model discloses technical scheme does:
a trackless haulage roadway pavement structure under a coal mine well is characterized in that a pressure relief groove for preventing and treating a bottom heave disease is arranged in the middle of a bottom plate of a trackless haulage roadway, gravel fillers are arranged in the pressure relief groove, trackless haulage roadway pavement structures under the coal mine well are arranged on two sides of the pressure relief groove, and each trackless haulage roadway pavement structure under the coal mine well comprises a graded gravel leveling layer, an emulsified asphalt gravel seal layer, a cement concrete base layer and a polyethylene pavement slab; the graded broken stone leveling layer comprises a graded broken stone layer and a broken stone cushion layer; graded broken stones filled to the same height of the upper surface of the polyethylene road deck plate are arranged from the outer side of the underground trackless transportation roadway pavement structure to the side wall of the underground roadway
The polyethylene road slab is of a prefabricated assembly type structure and consists of a left driving road slab, a middle belt slab and a right driving road slab; the left running board, the middle belt board and the right running board are all formed by compressing a polyethylene pavement surface laminate, a middle laminate and a bottom board; the thicknesses of the polyethylene pavement surface layer plate, the middle layer plate and the bottom plate in the left running board, the middle belt plate and the right running board are the same; after the polyethylene pavement surface layer plate is seriously worn, the whole surface layer plate can be dismantled, after the dismantling, the middle layer plate is used as a new wearing layer, and the left running track plate, the middle belt plate and the right running track plate are still at the same elevation; the transverse gradient of the road panels at the two sides is the same as that of the road arch transverse gradient; the left lane board, the middle band board and the right lane board are quickly lapped by adopting a joggle structure.
The number of the joggle structure surfaces of the polyethylene pavement running plate at the starting and stopping point of the underground roadway is different from that of the joggle structure surfaces of the running plates at other positions, the polyethylene pavement running plate at the starting and stopping point respectively has a joggle structure on the long side and the short side of the running plate, and the polyethylene pavement running plate except for one side of the side wall of the underground roadway has joggle structures on other three sides.
The polyethylene pavement slab is made of flame-retardant engineering plastics, in particular high-density flame-retardant polyethylene or ultrahigh molecular weight flame-retardant polyethylene; the method can be selected according to the load bearing capacity of the road surface, and when the load bearing capacity of the road surface is large, the ultrahigh molecular weight flame-retardant polyethylene is selected as the main raw material of the engineering plastic; otherwise, high-density flame-retardant polyethylene is selected.
The upper surface and the lower surface of the polyethylene road slab are different, and the road slab is prefabricated in advance by a factory; the upper surface of the polyethylene pavement slab is provided with textures, the textures are compact high imitation strip-shaped textures, the textures are formed by cutting isobaric non-impact steel cutters in the direction perpendicular to a lane, the pavement is transversely shown as a strip-shaped pull groove and longitudinally shown as a shallow-ditch gully shape, the overall pavement is U-shaped, the pull grooves are arranged from inside to outside from shallow to deep, the depth range is 1-3 mm, and the pavement texture interval range is 15mm; the lower surface of the polyethylene road panel comprises convex grains, concave grains and a false seam cutting thin plate, the cross sections of the convex grains and the concave grains are circular, the first row is arranged for the convex grains, the second row is arranged for the concave grains, the concave grains and the convex grains are sequentially arranged alternately and are staggered in a crossed mode, the height of the concave grains and the height of the concave grains are both 4-6 mm, the false seam cutting plate is located in the middle of the roadway plate and integrated with the roadway plate, and the cutting device and the roadway plate are the same in width, 2-4 mm in length and 8-12 mm in height.
The compactness standard of the cement concrete base layer is more than 95%; the compaction degree detection method adopts a sand filling method; splicing is carried out in an inside-out mode according to the splicing sequence; the splicing of the intermediate belt plates is performed at the very beginning.
The graded broken stone leveling layer, the cement concrete base layer and broken stones in the pressure relief groove are broken stones screened by coal gangue.
And the graded broken stones positioned on two sides of the underground trackless transportation roadway pavement structure support and protect the whole pavement structure.
The aggregate used for the cement concrete base course has the grain diameter of 5-16 mm; the cement concrete base layer is paved at the two sides of the pressure relief groove with the thickness of 120-150 mm; the transverse gradient of the pavement is 2 percent; the graded broken stone leveling layer consists of graded broken stones and a broken stone cushion layer; the particle size of the used gravels is 5-10 mm; the thickness of the broken stone cushion layer laid on the two sides of the pressure relief groove is not more than 100mm.
Filling gravels in the pressure relief groove to three quarters of the groove depth; when the extrusion deformation of the pressure relief groove is serious due to the roadway bottom bulging, the pressure relief groove is trimmed by the detachable intermediate belt plate, and after the correction is finished, the intermediate belt plate is installed again; when the height difference of about 5mm is formed between the middle belt plate and the left and right side plates, the deformation of the pressure relief groove is considered to be serious.
The application also provides a construction method of the underground trackless haulage roadway road surface structure of the coal mine, which comprises the following construction steps:
step one, preparation before construction: according to design drawings, treating a construction site, cleaning float coal, sundries and the like on a bottom plate of a roadway, checking water outlet points such as water spraying of a top plate of the roadway, water seepage of the bottom plate and the like, dredging a ditch, installing a canopy, draining accumulated water, reporting the inspection and acceptance of a supervision engineer, and performing construction and lofting according to the design drawings;
step two, pressure relief groove construction: excavating a roadway bottom plate according to a drawing lofting result, and paving broken stones with the thickness of about three quarters of the groove depth at the bottom of the pressure relief groove after excavating to a specified depth;
step three, paving a graded broken stone leveling layer:
s1, cleaning and wetting the surface of a roadbed, paving a graded broken stone layer, and watering a roadway bottom plate to keep the surface wet without leaving open water;
s2, transporting the crushed stones by adopting a trackless rubber-tyred transport vehicle, accurately controlling the transport time and ensuring the smooth transport road;
s3, mixing and paving broken stones, conveying the coal gangue to a site, manually adding water according to a mixing ratio by an operator for stirring, mixing by adopting shovels, rakes and the like to ensure that the mixed materials have similar colors and are uniformly mixed, and paving graded broken stones after uniformly stirring;
s4, compacting graded broken stones for leveling, wherein operators use cylindrical appliances such as solid logs and the like to roll the graded broken stones for 1 to 3 times according to the compaction requirement, the overlapping width of wheel tracks is 1/2 during rolling, the running speed is 0.7m/S, and the parts with too little surface aggregate are filled in the process;
s5, mixing and transporting the gravel cushion, and synchronously performing the steps S2 and S3 in the third step;
s6, paving aggregate of the broken stone cushion layer, calculating the thickness of the graded broken stone cushion layer according to design process parameters strictly, paving on two sides of the pressure relief groove to control the construction process and record, checking the quality index of the graded broken stone layer in the process and timely processing the problems found by the lower-level broken stone layer;
s7, leveling and rolling the gravel cushion layer, and manually leveling the surface. An operator rolls the gravel cushion layer for 2 to 6 times by adopting cylindrical appliances such as solid logs and the like according to the requirement of compactness, the overlapping width of wheel tracks is 1/2 when rolling, the running speed is 0.7m/s, the places with too little surface aggregate are filled in the process, the compactness test is carried out after rolling is finished, the compactness can reach more than 95 percent, and the unqualified gravel cushion layer is trimmed in time to ensure compactness;
step four, emulsified asphalt macadam seal coat laying:
a1, cleaning a broken stone cushion layer, thoroughly cleaning the processed broken stone cushion layer, and removing loose broken stones, dust, oil stains and other foreign matters;
a2, emulsified asphalt spreading and gravel spreading, wherein a synchronous gravel sealing vehicle is adopted for operation, uniform spreading is carried out along a gravel cushion layer, uniform spraying is carried out while keeping the routing straight, an asphalt film with the same thickness is formed, and the spreading amount is controlled to be 1.8-2.2kg/m 2 The spreading of the crushed stone should be uniform, so that a layer is simply laid on the surface of the asphalt film, and the crushed stone is locally adoptedManually-assisted spreading is carried out, so that the asphalt is leaked to be spread, the broken stone coverage is not overlapped, the spreading length of the asphalt is matched with the spreading capacity of the aggregates, and the aggregates are prevented from being spread after the emulsified asphalt is spread for a long time;
rolling emulsified asphalt macadam seal coat, adopting cylindrical apparatuses such as solid logs and the like to carry out rolling construction, firstly, rapidly rolling for 2 to 3 times to ensure that stones and asphalt are adhered as much as possible, wherein the distance between the stones and a seal coat vehicle is not more than 15m, then rolling for 4 to 6 times, wherein the overlapping width of wheel tracks during rolling is 1/2, the rolling speed is 0.2m/s, the rolling effect is that the asphalt and the stones are fully adhered, and the surface is free from excessive floating macadam;
a4, maintaining the emulsified asphalt macadam seal, cleaning redundant macadams on the emulsified asphalt macadam seal after the emulsified asphalt is completely demulsified, and carrying out the next construction after forming;
step five, paving a cement concrete base layer:
b1, laying construction lines, marking the construction lines on two sides of the roadway before construction according to the design height and gradient requirements of a construction drawing, controlling the supported elevation of the template, and ensuring the horizontal of the templates on two sides; when the template is erected, a construction line is respectively pulled along the direction of the roadway along the template, so that the erection of the template is ensured to be flat, straight and straight;
and B2, erecting templates, wherein the straight line section of the roadway requires that the templates on the two sides are butted and erected, and the bend part can be connected in a staggered manner. The butting error is not more than 50mm, the horizontal error of the templates on two sides in the same direction is not more than 10mm, and the horizontal error in all directions is not more than 20mm;
b3, conveying and feeding, namely conveying by adopting a trackless rubber-tyred transport vehicle, accurately controlling the conveying time, ensuring the smooth transportation road, and mainly maintaining an emulsified asphalt macadam seal, timely cleaning tracks, timely bedding at hollow points, and avoiding the phenomena of vehicle slipping, vehicle error and the like;
b4, stirring on site, paving concrete, conveying the sand, the coal gangue and the cement to the site, manually adding water according to the mixing proportion by an operator for stirring, mixing by adopting shovels, rakes and the like to ensure that the mixture has similar color and luster and is uniformly mixed, and paving the concrete after uniformly stirring;
b5, vibrating and flattening, and vibrating by adopting a ZNF-50 inserted pneumatic vibrator on site;
b6, removing the formwork, maintaining, performing formwork removal after 12 hours of cement concrete base layer construction, performing three-eight manufacturing operation, performing sprinkling water on the road surface once every one shift, strictly prohibiting vehicles from passing in 24 hours of the road surface, and walking pedestrians along the side of the side ditch, wherein the maintenance time is 1 day;
step six, paving a polyethylene road deck:
c1, paving a road panel, namely firstly installing a middle belt plate along a pressure relief groove, and installing a left driving road plate and a right driving road plate along a joggle structure on two sides of the middle belt plate;
c2, rolling the pavement slab, wherein an operator performs rolling construction by adopting cylindrical appliances such as solid logs and the like according to the requirement of the salient points of the pavement slab, and rolls the polyethylene pavement slab for 2 to 6 times, wherein the overlapping width of wheel tracks is 1/2 during rolling, and the rolling speed is 0.2m/s, so that the salient points, the concave points and the false seam cutting thin plates of the polyethylene pavement slab are completely embedded into the cement concrete base layer;
step six, paving the external graded broken stones of the road surface structure: filling graded broken stones between the outer side of the polyethylene side ditch plate and the side wall of the underground roadway, rolling once every 30mm, and if the thickness is less than 30mm, rolling according to the actual thickness during specific construction until the crushed stones are filled to the same height as the upper surface of the polyethylene road deck;
step seven, breaking and maintaining: after the construction of the pavement structure is finished, vehicles are forbidden to pass, pedestrians walk along the middle belt plate, and the vehicles pass after the pavement is maintained for 7 days;
after the pavement is finished, the surface plate of the whole polyethylene pavement can be dismantled according to the damage condition of the surface plate of the polyethylene pavement; after the middle layer plate is removed, the middle layer plate is used as a new wearing layer, and after the middle layer plate is seriously worn, the whole middle layer plate is removed, and the polyethylene pavement bottom plate is used as the wearing layer; when the bottom plate of the polyethylene pavement is seriously abraded, the polyethylene pavement plate is integrally replaced; after the polyethylene pavement surface layer plate which is seriously worn is integrally removed, the graded broken stone layers on the two sides of the pavement structure are correspondingly removed in thickness, shoveled and rolled again, and the middle layer plate is removed in the same way.
The utility model has the characteristics of it is following and beneficial effect:
the utility model relates to a road surface structure adopted gathers materials and is the industry useless admittedly, specifically is the gangue of the different particle diameters after the breakage, makes road surface structure have better resistance to compression bearing capacity on the one hand, on the other hand can reduce the occupation of gangue to the soil, slows down ecological environment pressure, is favorable to improving the scale and the high-valued of gangue comprehensive utilization; under special working conditions of complex stress field, narrow space, unsmooth gas circulation and the like, the polyethylene pavement slab has the advantages of light weight, strong splicing property, quick construction, good replaceability and the like. The mechanical arm is used for hoisting the road slab to a specified position, and the groove structures around the polyethylene road slab are used for joggling, so that the rapid lap joint in a narrow space can be realized, and a large amount of construction time and labor cost can be saved; when the local pavement slab is damaged, the damaged original pavement slab can be quickly dismantled and then laid again, and the graded broken stone layer is leveled and compacted; the polyethylene pavement running board is formed by compressing three polyethylene plates, when the surface layer plate is seriously damaged, the surface layer plate of the whole polyethylene running board can be integrally removed, so that the middle layer plate of the polyethylene pavement is in a working state, the middle layer plate is in the same way, and after the bottom plate is seriously damaged, the middle layer plate is integrally replaced, so that the effective utilization of the polyethylene pavement panel can be effectively improved, and the resource waste is reduced;
the upper surface of the polyethylene pavement roadway plate is subjected to texturing treatment, so that the noise decibel inside an underground tunnel can be effectively reduced, the pavement evenness can be improved, and the pavement anti-skid performance and the service level of the underground tunnel pavement are improved; the lower surface of the polyethylene pavement slab is provided with the concave points and the convex points with different heights, so that the bonding strength of the polyethylene pavement and the cement concrete base layer can be better increased, the transverse sliding is reduced, the shearing resistance of the pavement structure is enhanced, the shearing damage of the cement concrete base layer is reduced, the service life of the pavement can be effectively prolonged, and a safe and reliable transportation system is provided for underground mining; the extrusion damage condition of the pressure relief groove can be monitored in real time. When the bottom heave deformation of the road surface is within the specified limit, the ground stress and the deformation at the bottom plate of the roadway can be released through the pressure relief groove; when the road surface damage is over the specified limit, the middle belt plate is raised by a certain height to forecast, so that damage is reminded, maintenance personnel can conveniently and timely overhaul, the influence of the bulge disease on the whole road surface can be effectively reduced, unnecessary road surface repair is reduced, and the economy and driving safety of the whole life cycle of the road are ensured.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a cross sectional view of the underground trackless haulage roadway structure of the coal mine of the present invention;
FIG. 2 is a perspective view of a polyethylene pavement slab header;
FIG. 3 is a perspective view of a polyethylene pavement slab tailgate;
FIG. 4 is a perspective view of a plate in a polyethylene pavement slab;
FIG. 5 isbase:Sub>A cross-sectional view of the plate structure of the polyethylene pavement of FIG. 4 taken along line A-A;
FIG. 6 is a cross-sectional view of the plate structure of the polyethylene pavement of FIG. 4 taken along line B-B;
FIG. 7 is a cross-sectional view of the plate structure of FIG. 4 taken along line C-C;
fig. 8 is a partial full perspective view of the polyethylene pavement slab.
In the figure: 1-polyethylene pavement; 11-polyethylene left side roadway plate; 12-polyethylene pavement middle band plate; 13-right running board of polyethylene pavement; 1 a-polyethylene pavement surface layer plate; 1 b-polyethylene pavement middle layer plate; 1 c-polyethylene pavement base slab; 14-bumps; 15-pits; 16-false seam cutting of thin plates; 17-stripe texture; 2-cement concrete base course; 3, sealing the emulsified asphalt macadam; 4-a gravel cushion layer; 5. -grading a crushed stone layer; 6-pressure relief groove.
Detailed Description
The parameter and the construction technical requirement of polyethylene pavement slab, the design parameter and the construction technical requirement of cement concrete basic unit, the design parameter and the construction requirement of emulsified asphalt rubble seal coat, grading rubble layer design parameter and construction technical requirement etc. this embodiment no longer states tiredly, and the key explanation the utility model relates to an embodiment of structure.
Fig. 1 isbase:Sub>A cross sectional view ofbase:Sub>A trackless haulage roadway road structure inbase:Sub>A coal mine, fig. 2 isbase:Sub>A perspective view ofbase:Sub>A head plate ofbase:Sub>A polyethylene road plate, fig. 3 isbase:Sub>A perspective view ofbase:Sub>A tail plate of the polyethylene road plate, fig. 4 isbase:Sub>A perspective view ofbase:Sub>A middle plate of the polyethylene road plate, fig. 5 isbase:Sub>A sectional view of the middle plate of the polyethylene road plate along the linebase:Sub>A-base:Sub>A in fig. 4, fig. 6 isbase:Sub>A sectional view of the middle plate of the polyethylene road plate along the line B-B in fig. 4, fig. 7 isbase:Sub>A sectional view of the middle plate of the polyethylene road plate along the line C-C in fig. 4, and fig. 8 isbase:Sub>A complete perspective view ofbase:Sub>A part of the polyethylene road plate. Referring to fig. 1 to 8, the concrete pavement comprises a polyethylene pavement 1, a cement concrete base course 2, an emulsified asphalt macadam seal coat 3, a macadam cushion coat 4, a graded macadam layer 5 and a pressure relief groove 6. A trackless haulage roadway pavement structure in a coal mine well is characterized in that a pressure relief groove 6 for preventing and treating a bottom heave disease is arranged in the middle of a bottom plate of the trackless haulage roadway in the well, a broken stone filler is arranged in the pressure relief groove 6, trackless haulage roadway pavement structures in the well are arranged on two sides of the pressure relief groove 6, and each trackless haulage roadway pavement structure in the well comprises a graded broken stone leveling layer, an emulsified asphalt broken stone sealing layer 3, a cement concrete base layer 2 and a polyethylene pavement 1; the graded broken stone leveling layer comprises a graded broken stone layer 5 and a broken stone cushion layer 4; graded broken stones are arranged from the outer side of the underground trackless transportation roadway road surface structure to the side wall of the underground roadway and filled to the same height of the upper surface of the polyethylene road deck. The polyethylene road slab is of a prefabricated assembly type structure and consists of a left driving road slab 11, a middle belt slab 12 and a right driving road slab 13; the left running board, the middle belt board and the right running board are all formed by compressing a polyethylene pavement surface layer board 1a, a middle layer board 1b and a bottom board 1 c; the thicknesses of the polyethylene pavement surface layer plate 1a, the middle layer plate 1b and the bottom plate 1c in the left running board, the middle belt plate and the right running board are the same; after the polyethylene pavement surface layer plate is seriously worn, the whole surface layer plate can be dismantled, after the dismantling, the middle layer plate is used as a new wearing layer, and the left running track plate, the middle belt plate and the right running track plate are still at the same elevation; the transverse gradient of the road panels at the two sides is the same as that of the road arch transverse gradient; the left lane board, the middle band board and the right lane board are quickly lapped by adopting a joggle structure. The number of the joggle structure surfaces of the polyethylene pavement running plate at the starting and stopping point of the underground roadway is different from that of the joggle structure surfaces of the running plates at other positions, the polyethylene pavement running plate at the starting and stopping point respectively has a joggle structure on the long side and the short side of the running plate, and the polyethylene pavement running plate except for one side of the side wall of the underground roadway has joggle structures on other three sides. The upper surface and the lower surface of the polyethylene road slab are different, and the road slab is prefabricated in advance by a factory; the upper surface of the polyethylene road deck plate is provided with strip-shaped textures 17 which are compact high-imitation strip-shaped textures, and the textures are formed by cutting an isobaric non-impact steel cutter in the direction vertical to the lane,
the steps of laying include the following:
step one, preparation before construction: according to design drawings, treating a construction site, cleaning float coal, sundries and the like on a bottom plate of a roadway, checking water outlet points such as water spraying of a top plate of the roadway, water seepage of the bottom plate and the like, dredging a ditch, installing a canopy, draining accumulated water, reporting the inspection and acceptance of a supervision engineer, and performing construction and lofting according to the design drawings;
step two, construction of the pressure relief groove 6: excavating a roadway bottom plate according to a drawing lofting result, and paving broken stones with the thickness of about three quarters of the groove depth at the bottom of the pressure relief groove after excavating to a specified depth;
step three, paving a graded broken stone leveling layer:
s1, cleaning and wetting the roadbed surface. Paving a graded crushed stone layer 5, and spraying water on a roadway bottom plate to keep the surface wet and not leave open water;
s2, transporting the crushed stone. A trackless rubber-tyred transport vehicle is adopted for transportation, so that the transportation time is accurately controlled, and the smooth transportation road is ensured;
and S3, mixing and paving the crushed stone. After the coal gangue is transported to the site, the operator manually adds water according to the mixing proportion and stirs, adopts shovels, rakes and the like to mix, ensures that the mixture has similar color and luster and is evenly mixed, and paves graded broken stones after even stirring;
and S4, compacting graded broken stones and leveling. The operator adopts cylindrical appliances such as solid logs and the like to roll the graded broken stone layer 5 for 1 to 3 times according to the requirement of compactness, the overlapping width of wheel tracks is 1/2 during rolling, the running speed is 0.7m/s, and the part with too little aggregate on the surface is filled in the process;
and S5, mixing and transporting the gravel cushion layer 4. S2 and S3 in the step III of the process synchronization;
and S6, paving the gravel cushion 4 aggregate. Calculating the thickness of the graded broken stone cushion layer 4 according to design process parameters strictly, paving on two sides of the pressure relief groove 6 to control the construction process and record, and checking the quality index of the graded broken stone layer 5 and timely processing the problems found in the lower graded broken stone layer 5 in the process;
s7, leveling and rolling the gravel cushion layer 4. The surface is manually leveled. The operation personnel adopt cylindrical appliances such as solid logs and the like to roll the gravel cushion for 2 to 6 times according to the requirement of compactness, the overlapping width of wheel tracks is 1/2 when rolling, the running speed is 0.7m/s, the places with too little surface aggregate are filled in the process, the compactness test is carried out after rolling is finished, the compactness is more than 95 percent, and the unqualified parts are trimmed in time to ensure compactness;
step four, emulsified asphalt macadam seal coat laying:
a1, cleaning the gravel cushion 4. Thoroughly cleaning the treated broken stone cushion layer to remove loose broken stones, dust, oil stains and other foreign matters;
and A2, emulsified asphalt spreading and broken stone spreading. The synchronous gravel sealing vehicle is adopted for operation, uniform spraying is carried out along the gravel cushion layer, the uniform spraying is carried out while the straight running of the wires is kept, and the asphalt film with the same thickness is formed. The spreading amount is controlled to be 1.8-2.2kg/m 2 . The gravel spreading is uniform and consistent, a layer is preferably arranged on the surface of the asphalt film, manual auxiliary spreading is adopted on the local part, asphalt is leaked and scattered on the whole, and the gravel covering is not overlapped. Asphalt spreading length and aggregate spreading capacityThe method needs to be matched, so that the emulsified asphalt is prevented from spreading aggregate after a long time;
and A3, rolling the emulsified asphalt macadam seal coat 3. The rolling construction is carried out by adopting cylindrical appliances such as solid logs and the like, firstly, the rolling is carried out for 2 to 3 times quickly, the stone and the asphalt are ensured to be adhered as much as possible, and the distance between the stone and a seal car is not more than 15m. Rolling for 4-6 times, wherein the overlapping width of the wheel tracks is 1/2, the rolling speed is 0.2m/s, the rolling effect is that asphalt and stone are fully bonded, and the surface is free from excessive floating macadam;
and A4, curing the emulsified asphalt macadam seal layer 3. After the emulsified asphalt is completely demulsified, cleaning redundant broken stone on the emulsified asphalt broken stone seal layer 3, and carrying out the next construction after forming;
step five, paving the cement concrete base layer 2:
b1, laying a construction line. Marking construction lines on two sides of the roadway before construction according to the design height and gradient requirements of the construction drawing, controlling the supported elevation of the templates and ensuring the levelness of the templates on two sides; when the template is erected, a construction line is respectively pulled along the direction of the roadway along the template, so that the erection of the template is ensured to be flat, straight and straight;
b2, supporting a template. The straight line section of the roadway requires that templates at two sides are butted and supported, and the bend part can be connected in a staggered manner. The butting error is not more than 50mm, the horizontal error of the templates on two sides in the same direction is not more than 10mm, and the horizontal error in all directions is not more than 20mm;
and B3, conveying and feeding. The trackless rubber-tyred transport vehicle is adopted for transportation, the transportation time is accurately controlled, the key point for ensuring the smooth transportation road is to maintain the emulsified asphalt macadam seal 3, clear tracks in time, pad materials in a hollow point in time, and avoid the phenomena of vehicle slipping, vehicle error and the like;
b4, stirring on site and paving concrete. After the sand, the coal gangue and the cement are transported to the site, operators manually add water according to the mixing proportion and stir the mixture, and shovels, rakes and the like are adopted for mixing the mixture to ensure that the mixture has similar color and luster and is uniformly mixed, and the concrete is spread after the mixture is uniformly stirred;
and B5, vibrating and flattening. Vibrating by adopting a ZNF-50 inserted pneumatic vibrator on site;
and B6, removing the mold and maintaining. The cement concrete base layer 2 is demolded after being constructed for 12 hours, the three-eight manufacturing operation is carried out, the watering maintenance is carried out on the road surface once every one shift, vehicles are strictly forbidden to pass in 24 hours on the road surface, pedestrians walk along the side of the side ditch, and the maintenance is usually carried out for 1 day;
step six, paving a polyethylene road deck 1:
c1, paving road panels. Firstly, installing a middle belt plate 12 along a pressure relief groove 6, and installing a left driving road plate 11 and a right driving road plate 13 along a tenon joint structure at two sides of the middle belt plate;
c2, rolling the pavement slab. The operators adopt cylindrical appliances such as solid logs and the like to carry out rolling construction according to the protruding point requirements of the pavement slab, the polyethylene pavement slab 1 is rolled for 2 to 6 times, the overlapping width of wheel tracks is 1/2 during rolling, the rolling speed is 0.2m/s, and the polyethylene pavement slab protruding points 14, the concave points 15 and the false seam cutting thin plates 16 are ensured to be completely embedded into the cement concrete base layer 2;
step six, paving the external graded broken stones of the road surface structure: filling graded broken stones between the outer side of the polyethylene side ditch plate and the side wall of the underground roadway, rolling once every 30mm, and if the thickness is not more than 30mm, rolling according to the actual thickness during specific construction until the crushed stones are filled to the same height as the upper surface of the polyethylene pavement slab 1;
step seven, breaking and maintaining: after the construction of the pavement structure is finished, vehicles are forbidden to pass, pedestrians walk along the middle belt plate, and the vehicles pass after the pavement is maintained for 7 days;
after the pavement is finished, the surface plate 1a of the whole polyethylene pavement can be dismantled according to the damage condition of the polyethylene pavement surface plate 1a, after the dismantling, the middle plate 1b is used as a new wearing layer, after the middle plate 1b is seriously worn, the whole dismantling is carried out, and the polyethylene pavement bottom plate 1c is used as a wearing layer; when the polyethylene pavement bottom plate 1c is seriously worn, the polyethylene pavement panel 1 is integrally replaced; after the polyethylene pavement surface layer plate 1a which is seriously worn is integrally removed, the graded crushed stone layers 5 on the two sides of the pavement structure are correspondingly removed in thickness and are crushed again, and the middle layer plate 1b is removed in the same way.
Claims (6)
1. The utility model provides a colliery is trackless haulage roadway road surface structure in pit which characterized in that: the middle part of a bottom plate of the underground trackless transportation roadway is provided with a pressure relief groove for preventing and treating the bottom heave disease, the pressure relief groove is internally provided with a gravel filler, and two sides of the pressure relief groove are provided with underground trackless transportation roadway pavement structures which comprise graded gravel leveling layers, emulsified asphalt gravel sealing layers, cement concrete base layers and polyethylene pavement slabs; the graded broken stone leveling layer comprises a graded broken stone layer and a broken stone cushion layer; graded broken stones are arranged from the outer side of the underground trackless haulage roadway pavement structure to the side wall of the underground roadway and filled to the same height of the upper surface of the polyethylene roadway slab.
2. The underground trackless haulage roadway road surface structure of a coal mine according to claim 1, characterized in that: the polyethylene road slab is of a prefabricated assembly type structure and consists of a left driving road slab, a middle belt slab and a right driving road slab, and the transverse gradient of the road slabs on the two sides is the same as that of a road arch transverse gradient; the left running board, the middle belt board and the right running board are all formed by compressing a polyethylene pavement surface laminate, a middle laminate and a bottom board; the thicknesses of the polyethylene pavement surface layer plate, the middle layer plate and the bottom plate in the left running board, the middle belt plate and the right running board are the same; after the polyethylene pavement surface layer plate is seriously worn, the whole surface layer plate can be dismantled, after the dismantling, the middle layer plate is used as a new wearing layer, and the left running track plate, the middle belt plate and the right running track plate are still at the same elevation; the left lane board, the middle band board and the right lane board are quickly lapped by adopting a joggle structure.
3. The underground trackless haulage roadway road surface structure of a coal mine according to claim 1, characterized in that: the polyethylene pavement slab is made of flame-retardant engineering plastics and is made of high-density flame-retardant polyethylene or ultrahigh molecular weight flame-retardant polyethylene.
4. The underground trackless haulage roadway pavement structure of a coal mine according to claim 1 or 2, characterized in that: the upper surface and the lower surface of the polyethylene road deck are different and are prefabricated in advance by a factory; the upper surface of the polyethylene road deck is provided with textures, the textures are compact high-imitation strip-shaped textures, the textures are formed by cutting an isobaric impact-free steel cutter in the direction vertical to a lane, the road surface is transversely shown as a strip-shaped pull groove, the road surface is longitudinally shown as a shallow-ditch gully shape, the whole road surface is U-shaped, the pull grooves are arranged from inside to outside from shallow to deep, the depth range is 1-3 mm, and the distance range of the road surface textures is 15mm; the lower surface of the polyethylene road surface plate comprises convex grains, concave grains and a false seam cutting thin plate, the cross sections of the convex grains and the concave grains are circular, the convex grains are arranged in a first row, the concave grains are arranged in a second row, the concave grains and the convex grains are sequentially arranged alternately and are staggered in a crossed mode, the height of the convex grains and the height of the concave grains are both 4-6 mm, the false seam cutting plate is located in the middle of the roadway plate and integrated with the roadway plate, and the cutting device and the roadway plate are the same in width, 2-4 mm in length and 8-12 mm in height.
5. The underground trackless haulage roadway road surface structure of a coal mine according to claim 1, characterized in that: the graded broken stone leveling layer, the cement concrete base layer and broken stones in the pressure relief groove are broken stones screened by coal gangue.
6. The underground trackless haulage roadway pavement structure of a coal mine according to claim 1 or 5, characterized in that: the aggregate used for the cement concrete base course has the grain diameter of 5-16 mm; the cement concrete base layer is paved at the two sides of the pressure relief groove with the thickness of 120-150 mm; the transverse gradient of the pavement is 2 percent; the graded broken stone leveling layer consists of graded broken stones and a broken stone cushion layer; the particle size of the used gravels is 5-10 mm; the thickness of the gravel cushion layer laid on the two sides of the pressure relief groove is not more than 100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222214127.6U CN218466236U (en) | 2022-08-23 | 2022-08-23 | Trackless transport roadway pavement structure suitable for underground coal mine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222214127.6U CN218466236U (en) | 2022-08-23 | 2022-08-23 | Trackless transport roadway pavement structure suitable for underground coal mine |
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| Publication Number | Publication Date |
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| CN218466236U true CN218466236U (en) | 2023-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222214127.6U Active CN218466236U (en) | 2022-08-23 | 2022-08-23 | Trackless transport roadway pavement structure suitable for underground coal mine |
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| Country | Link |
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| CN (1) | CN218466236U (en) |
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