CN204536123U - Solid filling method coal mining two-dimensional physical analogue experiment installation - Google Patents
Solid filling method coal mining two-dimensional physical analogue experiment installation Download PDFInfo
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- CN204536123U CN204536123U CN201520068602.0U CN201520068602U CN204536123U CN 204536123 U CN204536123 U CN 204536123U CN 201520068602 U CN201520068602 U CN 201520068602U CN 204536123 U CN204536123 U CN 204536123U
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Abstract
The utility model discloses a kind of solid filling method coal mining two-dimensional physical analogue experiment installation, relate to by means of measure material chemistry or physical property is tested or analysis of material technical field.Described experimental provision comprises two-dimensional physical simulated experiment platform and several solid filling analog material moulds, on described two-dimensional physical simulator stand, heap has built rock stratum physical model, simulation support is provided with in the mining coal seam of described rock stratum physical model, the goaf of mining coal seam is provided with solid filling analog material mould, described simulation support and solid filling analog material mould are provided with pressure transducer, and the rock stratum physical model of the upper and lower both sides of described mining coal seam is provided with monitoring point for displacement.Described experimental provision is used for the simulated experiment of solid filling method coal mining two-dimensional physical, and described simulated experiment has simple to operate, and it is convenient to measure, and accurately can set the feature of the compactness of solid filling analog material in advance.
Description
Technical field
The utility model relate to by means of measure material chemistry or physical property is tested or analysis of material technical field, particularly relate to a kind of solid filling method coal mining two-dimensional physical analogue experiment installation.
Background technology
It is the space formed after one or more material mixed fillings such as gangue, flyash, slag, mine tailing, building waste, soil are entered exploitation that solid filling method is mined, and manifests the coal winning method of intensity with the movement and ore deposit pressure that control country rock.Solid filling method is mined to aspect successfuls such as protection earth's surface engineering construction, control roof and floor gushing waters, can consume a large amount of solid waste, less to the broken round trip degree of ecologic environment, cost is low compared with other filling coal mining method, thus obtain more employing.
Physical simulation experiment is that in research coal mining activities, coal rock layer moves the common method with strata-pressure behavior, and two dimension (plane) physical simulation experiment and three-dimensional physical simulation can be divided into test two classes.Two-dimensional physical simulated experiment uses material few, model heap build relative with coal seam excavation convenient, workload is few, the observation relative straightforward of Stress and displacement and convenient, be widely adopted when seam mining being regarded as plane strain problems.
Application number is the solution of simulation filling carried of patent documentation of 201110097491.2: " obturation reinforcement mechanism comprises guide rail of walking before and after reinforcement mechanism, be arranged on the reinforcement mechanism of walking on guide rail before and after reinforcement mechanism about walk guide rail, be arranged on reinforcement mechanism about walk hydraulic cylinder on guide rail, be arranged on hydraulic cylinder piston end compacting push pedal, be arranged in sensor between hydraulic cylinder piston and compacting push pedal "." solid filling material is filled with in three-dimensional casing, along with advance of the face compaction material is constantly filled with goaf, and by the hydraulic pressure beater structure with pressure transducer being arranged in workplace, compaction material is tamped ".
Application number is the solution of the simulation filling of the patent documentation proposition of 201110121561.3: " being located at the bracing frame at emulation coal seam place; bracing frame is provided with to simulate to combine adopts filling support; the comprehensive pushing two-way cylinder adopted filling support and comprise push plate, be connected with push plate of simulation; the front portion of pushing two-way cylinder is provided with fixed block; push two-way cylinder and be connected with oil pump through oil pipe, and push plate is provided with pushing regulating device "." emulation of the goaf filling after adopting filling support goaf filling material is combined to simulation, and bury multi information wireless senser underground in emulation goaf filling material "." gauge tap of startup oil pump, first regulates and pushes two-way cylinder and fixed block, the position of fixing push plate, then pushes emulation goaf filling material up and down until closely knit by pushing successively to regulate before and after briquetting ".
Application number be 201110121563.2 patent documentation solution and the application number of simulation filling that propose be 201110121561.3 patent documentation substantially identical.The shortcoming of above solution is that structure is comparatively complicated, requires high to the control accuracy of hydraulically operated equipment (HOE) and mechanical transmission.
By physical simulation experiment platform size and engineering quantitative limitation, model can not do too large.Therefore the thickness in coal seam is general less, adds solid filling analog material very inconvenient, also not easily accomplish to lay evenly to model inside.Mechanical hook-up is complicated, not easily accurately controls compaction, if solid filling analog material contains moisture, also may soak seam roof and base plate, thus changes the mechanical property of top board and base plate.(be noted that here cast material in simulated experiment meet water after character to change and in engineering, after roof and floor chance water, the change of character may not be consistent in rule).In addition, by the impact of back timber movement in actual coal mining process, be difficult to accomplish 100% connect top rate, neither all fillings all require to reach very high pack completeness.Be exactly in addition in the process of pushing solid filling analog material, the change of possible build-up of pressure sensor orientation and position, makes experiment accuracy reduce.Thus this several analogy method has certain limitation.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of solid filling method coal mining two-dimensional physical analogue experiment installation, described experimental provision is used for the simulated experiment of solid filling method coal mining two-dimensional physical, described simulated experiment has simple to operate, it is convenient to measure, and accurately can set the feature of the compactness of solid filling analog material in advance.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of solid filling method coal mining two-dimensional physical analogue experiment installation, it is characterized in that: described experimental provision comprises two-dimensional physical simulated experiment platform and several solid filling analog material moulds, on described two-dimensional physical simulator stand, heap has built rock stratum physical model, simulation support is provided with in the mining coal seam of described rock stratum physical model, the goaf of mining coal seam is provided with solid filling analog material mould, described simulation support and solid filling analog material mould are provided with pressure transducer, the rock stratum physical model of the upper and lower both sides of described mining coal seam is provided with monitoring point for displacement.
Further technical scheme is: the surface of described rock stratum physical model is provided with the first pressure adjusting plate, the upper surface of described first pressure adjusting plate is provided with pressure regulation device, the upper end of described pressure regulation device is provided with the second pressure adjusting plate, and described second pressure adjusting plate is fixedly connected with described two-dimensional physical simulated experiment platform.
Further technical scheme is: described pressure regulation device is hydraulic cylinder or hydraulic jack.
Further technical scheme is: described solid filling analog material mould comprises die ontology, solid filling analog material in die ontology and pressure transducer, described die ontology comprises front apron, backboard, left shifting board, right shifting board and base plate, described front apron and the separable both sides, front and back being connected to described base plate of backboard, described left shifting board and right shifting board are arranged on the left and right sides of described base plate, described die ontology comprises front apron, backboard, left shifting board, right shifting board and base plate enclose the peviform structure of placing fixing compaction material, described backboard offers threading hole, described pressure transducer is positioned at described solid filling analog material, the signal output part of pressure transducer is drawn to the outside of die ontology by the threading hole of signal wire on backboard.
Further technical scheme is: the upper surface of described solid filling analog material is provided with plastic sheeting.
Further technical scheme is: described front apron and backboard are made up of transparent material.
Further technical scheme is: described front apron and backboard adopt poly (methyl methacrylate) plate.
The beneficial effect adopting technique scheme to produce is: described experimental provision is used for the simulated experiment of solid filling method coal mining two-dimensional physical, described simulated experiment has simple to operate, accurately, it is convenient to measure, and accurately can set the feature of the compactness of solid filling analog material in advance for batching.In experiment, solid filling analog material can accomplish not with the top board on mining coal seam and under base plate directly contact, avoid because water function changes the character of roof and floor cast material.The pressure sensor position of solid filling analog material inside and orientation accurately, intuitively can draw the deformation of solid filling analog material.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the structural representation of experimental provision described in the utility model;
Fig. 2 is the structural representation of solid filling analog material mould in Fig. 1;
Wherein: 1, solid filling analog material mould 2, base plate 3, front apron 4, backboard 5, left shifting board 6, right shifting board 7, threading hole 8, signal wire 9, pressure transducer 10, two-dimensional physical simulated experiment platform 11, monitoring point for displacement 12, simulation support 13, rock stratum physical model 14, mining coal seam 15, first pressure adjusting plate 16, pressure regulation device 17, second pressure adjusting plate.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Set forth a lot of detail in the following description so that fully understand the utility model, but the utility model can also adopt other to be different from alternate manner described here to implement, those skilled in the art can when doing similar popularization without prejudice to when the utility model intension, and therefore the utility model is by the restriction of following public specific embodiment.
The utility model discloses a kind of solid filling method coal mining two-dimensional physical analogue experiment installation as shown in Figure 1, described experimental provision comprises two-dimensional physical simulated experiment platform 10 and several solid filling analog material moulds 1.On described two-dimensional physical simulator stand 10, heap has built rock stratum physical model 13, and rock stratum physical model 13 is for simulating actual strata structure.Be provided with simulation support 12 in the mining coal seam 14 of described rock stratum physical model 13, the goaf of mining coal seam 14 is provided with solid filling analog material mould 1.Described simulation support 12 and solid filling analog material mould 1 are provided with pressure transducer 9, and the rock stratum physical model of described mining coal seam about 14 both sides is provided with monitoring point for displacement 11, and described monitoring point for displacement 11 is provided with displacement transducer.
The surface of described rock stratum physical model 13 is provided with the first pressure adjusting plate 15, the upper surface of described first pressure adjusting plate 15 is provided with pressure regulation device 16, the upper end of described pressure regulation device 16 is provided with the second pressure adjusting plate 17, and described second pressure adjusting plate 17 is fixedly connected with described two-dimensional physical simulated experiment platform 10.Described pressure regulation device 16 is generally hydraulic cylinder or hydraulic jack.Pressure regulation device 16 acts on the first pressure adjusting plate 15 for outputting power, the pressure between the rock stratum of adjustment rock stratum physical model 13.
As shown in Figure 2, described solid filling analog material mould 1 comprises solid filling analog material in die ontology, die ontology and pressure transducer 9, and described die ontology comprises front apron 3, backboard 4, left shifting board 5, right shifting board 6 and base plate 2.In theory, the front and back inward flange distance of solid filling analog material mould 1 is equal with the thickness of two-dimensional physical model.With the inwall frictional influence experiment effect of solid filling analog material mould 1 in upper strata rock depression process, lengthened slightly by base plate 2 according to actual conditions, in the present embodiment, base plate 2 is than the enlarged in thickness 4mm of two-dimensional physical model.
Described front apron 3 and the separable both sides, front and back being connected to described base plate 2 of backboard 4, front apron 3 and backboard 4 are made up of transparent material, adopt poly (methyl methacrylate) plate in the present embodiment.Base plate 2 is meeting under strength and stiffness condition thin as far as possible, and the base plate 2 in the present embodiment is made up of high-strength steel sheet.With bolts between front apron 3 and base plate 2 in the present embodiment, solid filling analog material mould 1 inner surface of front apron 3 adopts countersunk head screw form, to avoid the out-of-flatness of solid filling analog material mould 1 inner surface causing front apron 3.Backboard 4 and base plate 2 adopt screw connecting mode.
Described left shifting board 5 and right shifting board 6 are arranged on the left and right sides of described base plate 2, and described die ontology comprises front apron 3, backboard 4, left shifting board 5, right shifting board 6 and base plate 2 and encloses the peviform structure of placing fixing compaction material.Described backboard 4 offers threading hole 7, and described pressure transducer 9 is positioned at described solid filling analog material, and the signal output part of pressure transducer 9 passes through signal wire) threading hole 7 on backboard draws to the outside of die ontology.The height of solid filling analog material mould 1 is identical with seam mining thickness.
In some cases, be difficult to accomplish that in the height of solid filling analog material mould 1 and model, seam mining height is completely the same.In the present embodiment, after compaction material has been loaded in solid filling analog material mould 1 inside, backboard 4 is removed, the cohesive force of solid filling analog material is utilized to keep supporting oneself, solid filling analog material mould 1 is inserted exploitation space together with solid filling analog material, load onto backboard 4, be screwed backboard 4 and base plate 2, doing so avoids the damage that backboard 4 pairs of top boards may cause.The bottom of base plate 2 should be smooth, to avoid causing brokenly ring to base plate when inserting exploitation space.In the present embodiment, the bottom of base plate 2 adopts polishing.
Corresponding with above-mentioned experimental provision, also disclose a kind of solid filling method coal mining two-dimensional physical analogue experiment method, described method comprises the steps:
(1) before described experiment, the first compression curve of actual compaction material under actual compactness condition in seam mining process.
(2) according to the compression curve of actual compaction material under actual compactness condition and stress similitude condition configuration solid filling analog material, the liquid water content of the grain composition of solid material, mixing ratio, composite material and initial compaction is determined;
(3) according to the actual ocurrence of coal seam situation of engineering, follow the principle of similitude, on two-dimensional physical simulated experiment platform 10, heap builds rock stratum physical model 13.Heap is built in process, according to the actual conditions that will study a question, buries pressure transducer 9 underground in coal rock layer inner setting position, draw pressure sensor signal line 8, to facilitate the pressure changing of record coal rock layer inside, after model dries, lay displacement measuring points 11 at model surface.
(4) bottom area of solid filling analog material mould 1 is calculated, according to the compactness of experiment gained, need the pack completeness of simulation calculate required solid filling analog material number, solid filling analog material is evenly loaded solid filling analog material mould 1, to pressing to the pack completeness height needing simulation, need to ensure the even of compacting in compacting process.
(5) on solid filling analog material, add a cover layer of plastic film, reduce because the evaporation of moisture is on the impact of solid filling analog material character, after also avoiding roof strata to meet water, character changes.
(6) open-off cut on the desired location needing working seam, then places simulation support 12, and simulation hydraulic support is to the effect of top board.Simulation support 12 is provided with pressure transducer 9.The seam mining first step is carried out at workplace.Be moved to the left simulation support 12, solid filling analog material mould 1 is inserted exploitation space together with solid filling analog material, extract right shifting board 6 out, solid filling analog material mould 1 entirety is moved to right, make up and extract the solid filling analog material of right shifting board 6 formation and the gap of rib out.According to geometry and time similarity condition excavation second step, be moved to the left simulation support 12, then filling second step.The left shifting board 5 of extraction first time filling afterwards and the right shifting board 6 of second time filling, and solid filling analog material mould 1 entirety of second time filling is moved to right, make up the gap between the solid filling analog material extracting baffle plate formation out.Later filling mining process the like.According to the needs studied a question, when being filled to desired location, placement force sensor 9 in the solid filling analog material in solid filling analog material mould 1, by the signal wire 8 of pressure transducer through threading hole 7, during placement force sensor 9, the accurate of its position and angle be ensured.
(7) displacement transducer is placed at the monitoring point for displacement of rock stratum physical model 13;
(8) in the process of excavation, supporting and filling and in later setting-up time, survey note coal rock layer movement and deformation and the situation of destruction by instrument, and survey the pressure change of the inner coal rock layer of note model and obturation.
Described experimental provision is used for the simulated experiment of solid filling method coal mining two-dimensional physical, and described simulated experiment has simple to operate, and accurately, it is convenient to measure, and accurately can set the feature of the compactness of solid filling analog material in advance for batching.In experiment, solid filling analog material can accomplish not with the top board on mining coal seam and under base plate directly contact, avoid because water function changes the character of roof and floor cast material.The pressure sensor position of solid filling analog material inside and orientation accurately, intuitively can draw the deformation of solid filling analog material.
Claims (7)
1. a solid filling method coal mining two-dimensional physical analogue experiment installation, it is characterized in that: described experimental provision comprises two-dimensional physical simulated experiment platform (10) and several solid filling analog material moulds (1), the upper heap of described two-dimensional physical simulator stand (10) has built rock stratum physical model (13), simulation support (12) is provided with in the mining coal seam (14) of described rock stratum physical model (13), the goaf of mining coal seam (14) is provided with solid filling analog material mould (1), described simulation support (12) and solid filling analog material mould (1) are provided with pressure transducer (9), the rock stratum physical model of the upper and lower both sides of described mining coal seam (14) is provided with monitoring point for displacement (11).
2. solid filling method coal mining two-dimensional physical analogue experiment installation according to claim 1, it is characterized in that: the surface of described rock stratum physical model (13) is provided with the first pressure adjusting plate (15), the upper surface of described first pressure adjusting plate (15) is provided with pressure regulation device (16), the upper end of described pressure regulation device (16) is provided with the second pressure adjusting plate (17), and described second pressure adjusting plate (17) is fixedly connected with described two-dimensional physical simulated experiment platform (10).
3. solid filling method coal mining two-dimensional physical analogue experiment installation according to claim 2, is characterized in that: described pressure regulation device (16) is hydraulic cylinder or hydraulic jack.
4. solid filling method coal mining two-dimensional physical analogue experiment installation according to claim 1, it is characterized in that: described solid filling analog material mould (1) comprises die ontology, solid filling analog material in die ontology and pressure transducer (9), described die ontology comprises front apron (3), backboard (4), left shifting board (5), right shifting board (6) and base plate (2), described front apron (3) and the separable both sides, front and back being connected to described base plate (2) of backboard (4), described left shifting board (5) and right shifting board (6) are arranged on the left and right sides of described base plate (2), described die ontology comprises front apron (3), backboard (4), left shifting board (5), right shifting board (6) and base plate (2) enclose the peviform structure of placing fixing compaction material, described backboard (4) offers threading hole (7), described pressure transducer (9) is positioned at described solid filling analog material, the signal output part of pressure transducer (9) is drawn to the outside of die ontology by signal wire (8) threading hole on backboard (7).
5. solid filling method coal mining two-dimensional physical analogue experiment installation according to claim 4, is characterized in that: the upper surface of described solid filling analog material is provided with plastic sheeting.
6. solid filling method coal mining two-dimensional physical analogue experiment installation according to claim 4, is characterized in that: described front apron (3) and backboard (4) are made up of transparent material.
7. solid filling method coal mining two-dimensional physical analogue experiment installation according to claim 6, is characterized in that: described front apron (3) and backboard (4) adopt poly (methyl methacrylate) plate.
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| CN201520068602.0U CN204536123U (en) | 2015-01-30 | 2015-01-30 | Solid filling method coal mining two-dimensional physical analogue experiment installation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568593A (en) * | 2015-01-30 | 2015-04-29 | 河北煤炭科学研究院 | Coal mining two-dimensional physical simulation experimental device using solid filling method and experimental method |
| CN109209492A (en) * | 2018-10-22 | 2019-01-15 | 河北工程大学 | A kind of filling mining tamping analogy method |
| CN109580147A (en) * | 2018-11-29 | 2019-04-05 | 西安科技大学 | A kind of similar material model is accurately laid with molding experimental provision |
| RU2695293C1 (en) * | 2017-03-16 | 2019-07-22 | Китайский Университет Горного Дела И Технологии | Method of determining physical similarity of imitated material of ore filling body |
| CN112147269A (en) * | 2020-09-30 | 2020-12-29 | 中国矿业大学(北京) | Laboratory analog simulation device for simulating gasification process of underground coal seam |
-
2015
- 2015-01-30 CN CN201520068602.0U patent/CN204536123U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568593A (en) * | 2015-01-30 | 2015-04-29 | 河北煤炭科学研究院 | Coal mining two-dimensional physical simulation experimental device using solid filling method and experimental method |
| CN104568593B (en) * | 2015-01-30 | 2017-01-18 | 河北煤炭科学研究院 | Coal mining two-dimensional physical simulation experimental device using solid filling method and experimental method |
| RU2695293C1 (en) * | 2017-03-16 | 2019-07-22 | Китайский Университет Горного Дела И Технологии | Method of determining physical similarity of imitated material of ore filling body |
| CN109209492A (en) * | 2018-10-22 | 2019-01-15 | 河北工程大学 | A kind of filling mining tamping analogy method |
| CN109209492B (en) * | 2018-10-22 | 2023-08-04 | 河北工程大学 | Filling mining tamping simulation method |
| CN109580147A (en) * | 2018-11-29 | 2019-04-05 | 西安科技大学 | A kind of similar material model is accurately laid with molding experimental provision |
| CN112147269A (en) * | 2020-09-30 | 2020-12-29 | 中国矿业大学(北京) | Laboratory analog simulation device for simulating gasification process of underground coal seam |
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Granted publication date: 20150805 Termination date: 20170130 |