CN217033650U - Device for simulating overlying strata separation layer grouting filling - Google Patents
Device for simulating overlying strata separation layer grouting filling Download PDFInfo
- Publication number
- CN217033650U CN217033650U CN202121703723.XU CN202121703723U CN217033650U CN 217033650 U CN217033650 U CN 217033650U CN 202121703723 U CN202121703723 U CN 202121703723U CN 217033650 U CN217033650 U CN 217033650U
- Authority
- CN
- China
- Prior art keywords
- grouting
- slip casting
- simulating
- drill
- filling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model provides a device for simulating overlying strata abscission layer grouting filling on the basis of a traditional similarity simulation test device, which can be flexibly moved according to a test field, can simulate different coal bed inclination angles, change the size of a box body according to design, is suitable for different geometric similarity ratio conditions, can flexibly adjust the position of a grouting pipe according to the appearance position of an abscission layer region in the excavation process, can simulate multilayer abscission layer grouting and the conditions of carrying out abscission layer grouting operation on a plurality of working surfaces simultaneously, and can better carry out similarity simulation on the whole overlying strata abscission layer grouting filling operation flow. Data obtained through overlying strata separation layer grouting can be verified and corrected with existing theories and numerical simulation research rooms, reliable filling mining bases are provided for coal mines, and safe and green coal mining is promoted.
Description
Technical Field
The utility model relates to the field of green filling mining subsidence reduction control in the coal industry, in particular to a device for simulating overlying strata abscission layer grouting filling.
Background
With the rapid development of economy in China, the demand of coal resources is rapidly increased, and deep coal resource exploitation becomes a normal state. The ecological environment problems of surface subsidence, underground water system destruction, gangue discharge and the like caused by large-scale mining in the goaf treated by the traditional caving method are increasingly prominent. In recent years, the overlying strata abscission layer grouting subsidence reducing technology becomes one of effective technical approaches for solving the problems, overlying strata abscission layer grouting fully utilizes the abscission layer space after coal mining, filling materials are injected into an abscission layer area through ground drilling holes, the rock stratum bending subsidence is slowed down, the ground surface subsidence is relieved, the parallel operation of underground mining and ground grouting filling is effectively realized, the underground mining and ground grouting filling are not interfered with each other, and the overlying strata abscission layer grouting subsidence reducing technology has the characteristics of low cost, high coal recovery rate and production efficiency, high yield and the like. At present, researchers study the theory and the numerical model of overlying strata abscission layer grouting filling, and due to the fact that a plurality of influence conditions restrict field actual measurement and practical research, a set of device capable of simulating overlying strata abscission layer grouting under actual production conditions needs to be designed, so that verification and correction are carried out between the prior theory and the numerical simulation research, and a reliable filling mining basis is provided for coal mines.
In view of the above, recently, an indoor overburden bed separation quantity measurement and grouting control simulation system and method (publication number: CN109507393A) and a test device and method (publication number: CN111487166A) for simulating three-dimensional flow state of filling slurry of a caving zone have been disclosed, but the method does not relate to overall flow simulation of overburden bed separation grouting filling, the designed device is simple and extensive, and selection of grouting positions in the process of simulating coal seam mining and overburden bed separation grouting filling is not considered. Aiming at the existing problems, the utility model provides a device for simulating overlying strata abscission layer grouting filling, which can be flexibly moved according to a test field, can simulate different coal seam inclination angles, can flexibly adjust the position of a grouting pipe according to the appearance position of an abscission layer in the excavation process, can simulate the conditions of multilayer abscission layer grouting and operation of abscission layer grouting on a plurality of working faces simultaneously, can well perform similar simulation on the whole process of overlying strata abscission layer grouting filling operation, provides reliable filling mining basis for a coal mine, and promotes safe and green coal mining.
SUMMERY OF THE UTILITY MODEL
The utility model provides a device for simulating overlying strata abscission layer grouting filling based on the overlying strata abscission layer grouting subsidence reducing technology, which aims to solve the problems in the technology, overcomes a plurality of restrictive conditions of field actual measurement research through indoor tests, can be verified and corrected with the existing theory and numerical simulation research, and provides a reliable filling mining basis for coal mines.
In order to achieve the purpose, the utility model provides the following technical scheme:
a device for simulating overburden bed separation grouting filling mainly comprises: the device comprises an analog device box body, a miniature stirring and grouting integrated pump, a screw rod, a movable baffle, a load supplementing hydraulic device, a top plate, a grouting pipe, a grouting hole groove, a drilling device, a front baffle, a line hole, a high-definition camera, an electric angle table, a side baffle, wheels, an acquisition monitoring system and a fixed support frame.
Furthermore, the movable baffle, the top plate, the side baffle and the bottom plate of the simulation device box body are made of rigid materials, and wheels are arranged at the bottom of the simulation device box body, so that the simulation device box body can move flexibly; one side of the front baffle is fixed through a rotating shaft on the side baffle, and the front baffle can be opened and closed at 270 degrees; the utility model discloses a portable drilling machine, including movable baffle, roof, slip casting pipe, movable baffle, bearing plate and bearing plate, bearing plate, bearing plate.
Furthermore, the front baffle is provided with a line hole for observing the change process of the coal rock layer in the simulation device box body through monitoring lines of various sensing elements by adopting an organic glass plate with excellent light transmittance.
Further, the size of the simulation device box body can be changed according to the requirement of the experiment similarity ratio.
Furthermore, the position of the grouting pipe can be flexibly adjusted according to the appearance position of the separation layer area in the excavation process by the grouting hole groove; the grouting pipe is used for simulating drilling and paving a grouting pipeline in a grouting process; the load-supplementing hydraulic devices are used to control and supplement the load of the overburden.
Furthermore, the top plate is made of rigid materials with certain thickness, the width of the grouting hole groove and the specification of the drilling device are determined by the size of the grouting pipe, and the drilling device can select any drilling position along the grouting hole groove, so that the grouting effect is more obvious.
Furthermore, the borer is made of carbon steel and comprises a drill handle, a drill rod and a drill bit, the drill rod is of a hollow structure, the drill handle is rotated manually to drive the drill rod and the drill bit to rotate during drilling, the borer is required to be perpendicular to the grouting hole groove, inclined holes are prevented from being punched, the borer rotates in the same direction, and after the borer is used, residues in the drill rod are removed by using a through strip immediately and cleaned.
The utility model has the following advantages:
the device can flexibly move according to a test site, can simulate different coal seam inclination angles, changes the size of the box body according to the design, is suitable for different geometric similarity ratio conditions, can flexibly adjust the position of a grouting pipe according to the appearance position of a separation layer area in the excavation process, can simulate the conditions of multilayer separation grouting and separation grouting operation of a plurality of working faces simultaneously, and can well perform similar simulation on the whole process of the overburden separation layer grouting filling operation. Data obtained through overlying strata separation layer grouting can be verified and corrected with existing theories and numerical simulation research rooms, reliable filling mining bases are provided for coal mines, and safe and green coal mining is promoted.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings which are needed to be used will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a test effect diagram of a device for simulating overlying strata abscission layer grouting filling of the utility model;
FIG. 2 is a box test diagram of a simulation device of the device for simulating overburden grouting filling according to the utility model;
FIG. 3 is a schematic structural diagram of a simulation device box body of the device for simulating overburden separation layer grouting filling of the utility model;
FIG. 4 is a schematic diagram of a drill structure of the device for simulating overburden grouting filling according to the present invention.
In the drawings: a simulation device case 1; a micro stirring and grouting integrated pump 2; a screw rod 3; a movable baffle 4; a load-supplementing hydraulic device 5; a top plate 6; a grouting pipe 7; grouting a hole groove 8; a drill 9; a front baffle 10; a wiring hole 11; a high-definition camera 12; an electric angular table 13; a coal seam 14; excavating a working face 15; a top-off area 16; a fissure zone 17; separation zone region 18; side dams 19; a wheel 20; an acquisition monitoring system 21; a drill shank 22; a drill rod 23; a drill bit 24; the support bracket 25 is fixed.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the utility model provides a device for simulating overburden separation layer grouting filling, which mainly comprises a simulation device box body 1, a micro stirring and grouting integrated pump 2, a screw rod 3, a movable baffle 4, a load supplementing hydraulic device 5, a top plate 6, a grouting pipe 7, a grouting hole groove 8, a drilling device 9, a front baffle plate 10, a line hole 11, a high-definition camera 12, an electric angle table 13, a side baffle plate 19, wheels 20, an acquisition monitoring system 21 and a fixed support frame 25.
Furthermore, the movable baffle 4, the top plate 6, the side baffles 19 and the bottom plate of the simulation device box body 1 are made of rigid materials, and wheels 20 are arranged at the bottom of the simulation device box body 1, so that the simulation device box body 1 can move flexibly; one side of the front baffle 10 is fixed through a rotating shaft on the side baffle 19, and can be opened and closed at 270 degrees; welded fastening hob 3 on adjustable fender 4, 3 lengths of hob can be confirmed according to the test condition who relates to, arrange the screw of 3 positions of hob on the side shield 19, and hob 3 passes the back and fixes with nut and packing ring, roof 6 is left along long limit direction and is equipped with slip casting hole groove 8, and slip casting pipe 7 is set up after drilling on slip casting hole groove 8 by perforator 9, and slip casting hole groove 8 forms for cutting roof 6, and both ends head is articulated, sets up in the middle of 6 widths on the roof, and load make-up hydraulic means 5 is evenly arranged on 6 upper portions of roof.
Furthermore, a circuit hole 11 is arranged on the front baffle 10 to observe the change process of the coal rock layer inside the simulation device box 1 through monitoring circuits of various sensing elements by using a plexiglass plate with excellent light transmittance.
Further, the size of the simulation apparatus case 1 can be changed according to the trial similarity ratio requirement.
Further, the grouting hole slot 8 can flexibly adjust the position of the grouting pipe 7 according to the appearance position of the delamination area 18 in the excavation process; the grouting pipe 7 is used for simulating drilling and laying of a grouting pipeline in a grouting process; the load-supplementing hydraulic means 5 is used to control and supplement the load of the overburden.
Furthermore, the top plate 6 is made of rigid materials with certain thickness, the width of the grouting hole groove 8 and the specification of the drilling device 9 are determined by the size of the grouting pipe 7, and the drilling device 9 can select any drilling position along the grouting hole groove 8, so that the grouting effect is more obvious.
Furthermore, the borer 9 is made of carbon steel and comprises a drill handle 22, a drill rod 23 and a drill bit 24, the drill rod 23 is of a hollow structure, the drill handle 22 is rotated manually to drive the drill rod 23 and the drill bit 24 to rotate during drilling, the borer 9 must be perpendicular to the grouting hole groove 8 to avoid drilling inclined holes, the inclined holes are required to be drilled in the same direction during rotation, and after the borer is used, the borer applies a through strip to remove residues in the drill rod 23 and clean the residues.
The embodiment is as follows:
the average thickness of 9 coal of a coal seam which belongs to a certain mining main mining coal seam under the Shenhua Ningxia coal industry group is 6.66m, the inclined length of a certain working face is 250m, the inclination angle of the coal seam is 7-10 degrees, the thickness of the coal seam is 4.5m, the thickness of an overlying strata is about 373m, and the volume weight is 1.8 multiplied by 103kg/m3The direct roof is limestone, and the overlying strata mainly comprise sandstone.
(1) Determining that the geometric similarity ratio of the model is 1: 100 (model: prototype), the volume-weight similarity ratio is 1: 1.5, the thickness of the overburden layer on the model simulation is 130m, the size of the physical simulation platform is 2.5m multiplied by 0.6m multiplied by 1.3m (length multiplied by width multiplied by height), fixing the movable baffle 4, adjusting the electric angle table 13 to enable the inclination angle of the simulation device box body 1 to be 10 degrees, and then opening the fixed supporting frame 25 to prevent the simulation device box body 1 from sliding.
(2) According to the following steps: delta-gammaH·(H-H1)/(αl·αγ) Determining overburden compensation load of 0.0405MPa, wherein:
γH-overburden bulk density, with an average value of about 25KN/m3；
αl-the length similarity constant, take 100; alpha (alpha) ("alpha")γ-taking a volume-weight similarity constant of 1.5;
h-formation thickness from surface to roof of coal seam 373m, H1The model simulates overburden thickness, 130 m.
Determining the dosage of each layered material of the model according to the formula of G ═ L · B · H · γ, wherein:
l-model length, m; b-model width, m; h-simulating each layering height of the rock stratum, m;
gamma-the volume weight of each layer of the simulated rock stratum.
(3) Weighing the similar materials and water required by each layer respectively, pouring the materials into a stirrer after mixing, uniformly stirring, pouring the stirred similar materials into a simulation device box body 1, flattening and compacting the similar materials by using a scraper, paving mica powder among the layers, and paving a sensing element at a position to be monitored.
(4) When the distance is 1.3m, the top plate 6 and the front baffle plate 10 are closed, the compensation load reaches 0.0405MPa when the load supplement hydraulic device 5 is adjusted, the electric fan is started to accelerate the air drying of the coal strata, and the air drying condition is observed regularly.
(5) After the coal rock stratum is air-dried, simulating coal bed mining, simultaneously starting a high-definition camera 12 and an acquisition monitoring system 21 to observe the change condition of the overlying rock stratum, wherein the propelling speed of a simulation working face in the experiment is 10cm/h, stopping the coal bed excavation when a separation zone 18 appears, slowly drilling along the direction vertical to a grouting hole groove 8 by using a drilling machine 9 to avoid damaging the separation zone 18, simultaneously starting a micro stirring and grouting integrated pump 2, pouring weighed grouting materials into the coal bed to be uniformly stirred after debugging is correct, then connecting a grouting pipe 7, starting simulating the grouting and filling operation of the overlying rock separation zone, and ending the grouting and filling operation until slurry is deposited in the separation zone to form a saturated compact.
The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand the utility model for and utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims (6)
1. The utility model provides a device that simulation overlying strata absciss layer slip casting was filled which characterized in that: the device mainly comprises a simulation device box body (1), a micro stirring and grouting integrated pump (2), a screw rod (3), a movable baffle plate (4), a load supplement hydraulic device (5), a top plate (6), a grouting pipe (7), a grouting hole groove (8), a drilling device (9), a front baffle plate (10), a circuit hole (11), a high-definition camera (12), an electric angle platform (13), a side baffle plate (19), wheels (20), an acquisition monitoring system (21) and a fixed support frame (25);
the movable baffle (4), the top plate (6), the side baffle (19) and the bottom plate of the simulation device box body (1) are made of rigid materials, and wheels (20) are arranged at the bottom of the simulation device box body, so that the simulation device box body (1) can move flexibly; one side of the front baffle (10) is fixed through a rotating shaft on the side baffle (19) and can be opened and closed at 270 degrees; weld fixation hob (3) on adjustable fender (4), hob (3) length can be confirmed according to the test condition who relates to, arranges the screw of hob (3) position on side shield (19), and it is fixed with nut and packing ring after hob (3) pass, roof (6) are followed long limit direction and are left and are equipped with slip casting hole groove (8), and slip casting pipe (7) set up by perforator (9) after drilling on slip casting hole groove (8), and slip casting hole groove (8) form for cutting roof (6), and both ends head is articulated, sets up in the middle of roof (6) width, and roof (6) upper portion evenly arranges load make-up hydraulic means (5).
2. The device for simulating overlying strata abscission layer grouting filling as claimed in claim 1, wherein: the front baffle (10) is provided with a line hole (11) to observe the change process of the coal rock layer in the simulation device box body (1) through monitoring lines of various sensing elements by adopting an organic glass plate with excellent light transmittance.
3. The device for simulating overburden bed slip casting filling according to claim 1, wherein: the size of the simulation device box body (1) can be changed according to the requirement of the test similarity ratio.
4. The device for simulating overlying strata abscission layer grouting filling as claimed in claim 1, wherein: the grouting hole groove (8) can flexibly adjust the position of the grouting pipe (7) according to the appearance position of the separation layer region (18) in the excavation process; the grouting pipe (7) is used for simulating drilling and laying of a grouting pipeline in a grouting process; the load-supplementing hydraulic means (5) is used to control and supplement the load of the overburden.
5. The device for simulating overburden bed slip casting filling according to claim 4, wherein: roof (6) are for having certain thickness rigid material, and slip casting hole groove (8) width and perforator (9) specification are confirmed by slip casting pipe (7) size, arbitrary drilling position can be selected along slip casting hole groove (8) to perforator (9) to make the slip casting effect more obvious.
6. The device for simulating overburden grouting filling of the overburden claim 1 or 5, wherein: the drill (9) is made of carbon steel and comprises a drill handle (22), a drill rod (23) and a drill bit (24), the drill rod (23) is of a hollow structure, the drill handle (22) is rotated through manpower during drilling to drive the drill rod (23) and the drill bit (24) to rotate, the drill (9) must be perpendicular to the grouting hole groove (8) to avoid drilling inclined holes, the inclined holes are required to be drilled in the same direction during rotation, and residues in the drill rod (23) are removed by using a through bar immediately after the drill is used and cleaned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121703723.XU CN217033650U (en) | 2021-07-26 | 2021-07-26 | Device for simulating overlying strata separation layer grouting filling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121703723.XU CN217033650U (en) | 2021-07-26 | 2021-07-26 | Device for simulating overlying strata separation layer grouting filling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217033650U true CN217033650U (en) | 2022-07-22 |
Family
ID=82410011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121703723.XU Active CN217033650U (en) | 2021-07-26 | 2021-07-26 | Device for simulating overlying strata separation layer grouting filling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217033650U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037197A (en) * | 2017-06-12 | 2017-08-11 | 贵州大学 | A kind of mining analog material two-dimensional analog pilot system |
-
2021
- 2021-07-26 CN CN202121703723.XU patent/CN217033650U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037197A (en) * | 2017-06-12 | 2017-08-11 | 贵州大学 | A kind of mining analog material two-dimensional analog pilot system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113433132A (en) | Device and method for simulating overlying strata separation layer grouting filling | |
| CN102364048B (en) | Comprehensive mechanized rock roadway tunneling machine | |
| CN102704927B (en) | Comprehensive mechanization stone drift heading machine set | |
| CN113464121B (en) | Method for determining gamma geosteering drilling track of azimuth while drilling | |
| CN103016053B (en) | Method of local filling to control surface subsidence in gob | |
| CN106930763B (en) | A method of the filling residual mining area roadway support coal column of second mining super high seam | |
| CN105092816A (en) | Three-dimensional multi-coal-seam-mining similar material model experimental system | |
| CN203658352U (en) | Water gushing-sand pouring disaster simulation test system of coal-seam mining induction top plate | |
| CN104481536B (en) | Cover rock crack and surface subsidence controlled digging, mining and filling parallel operation coal mining method | |
| CN103675237A (en) | Simulation test system and monitoring method for disaster of roof water burst and sand inrush induced by coal seam mining | |
| Yang et al. | Optimal coal discharge of hydraulic cutting inside coal seams for stimulating gas production: A case study in Pingmei coalfield | |
| CN202690045U (en) | Comprehensive mechanized rock drift heading machine | |
| CN101832103B (en) | Movable two-arm hanging wall anchor rod and anchor cable construction drill carriage | |
| CN205259939U (en) | Six arms top anchor rod drilling carriage | |
| WO2014187163A1 (en) | Inclined layered solid-filling mining method in ultrathick coal layer | |
| CN105649635B (en) | A kind of disaster type tunnelling method in goaf | |
| CN105954498B (en) | A kind of mine solid physical analogy coal rock layer filling and recovery method | |
| RU2635927C1 (en) | Method of laying open face with eolian sand in shallow coal seam in western desert mining areas | |
| Zhang et al. | Coal and rock fissure evolution and distribution characteristics of multi-seam mining | |
| CN217033650U (en) | Device for simulating overlying strata separation layer grouting filling | |
| Wang et al. | Surface subsidence control during bag filling mining of super high-water content material in the Handan mining area | |
| CN112814679A (en) | Pre-splitting blasting method for layered inclined fully-mechanized direct-covered hard roof of slowly-inclined thick coal seam | |
| CN109899109A (en) | The grouting filling method in irregular goaf | |
| CN110307034A (en) | The strip-type grouting filling method in goaf | |
| CN206329337U (en) | The coal mining system of half-edge coal seam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |