CN202731991U - Test model for banded filling, replacement and mining of fault protective coal pillar - Google Patents
Test model for banded filling, replacement and mining of fault protective coal pillar Download PDFInfo
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- CN202731991U CN202731991U CN 201220366541 CN201220366541U CN202731991U CN 202731991 U CN202731991 U CN 202731991U CN 201220366541 CN201220366541 CN 201220366541 CN 201220366541 U CN201220366541 U CN 201220366541U CN 202731991 U CN202731991 U CN 202731991U
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Abstract
The utility model discloses a test model for banded filling, replacement and mining of a fault protective coal pillar. The test model comprises a model bracket, wherein the inside of the model bracket is provided with the fault protective coal pillar, a filling body, a fault, a water limestone and a coal layer, the filling body is used for replacing part of fault protective coal pillar, one side of the fault is provided with the fault protective coal pillar, the filling body and the coal layer, the other side of the fault is provided with the water limestone, and the filling body is positioned between the coal layer and the fault protective coal pillar. The test model adopts the innovative method that the banded filling and mining method is considered for the first time, and part of fault protective coal pillar is mined and replaced; the test model aims to obtain different filling parameters according to different geological conditions. Through the utilization of the test model, on the premise of ensuring that part of the fault protective coal pillar is safely mined and water inrush accidents are not caused, the minimum width of remained coal pillar, the maximum distance of face control of coal pillar mining and the width of reserved banded coal pillar can be simulated. After being applied to the engineering practices, the test model has the advantages that the considerable economic values can be produced, and the teaching and practical requirements are met.
Description
Technical field
The utility model relates to a kind of experimental model, relates in particular to a kind of strip-type filling displacement back production faults protecting coal column experimental model.
Background technology
Mine floor water inrush accident about 80% is all relevant with tomography.Address this problem, targetedly some measures such as the slip casting transformation, visit and to discharge water and stay the water of setting up defences (protection) coal column etc., wherein stay the water coal column of setting up defences the most common.According to the regulation in the rules, fault waterproof pillar stays to be established width and is at least 20m, at some mine, because geological conditions is abominable, and the width of barrier pillar even surpassed 100m.Establish the guarantee that the protection coal column has improved the safe coal back production although stay; but also caused the loss of resource; if after the barrier pillar rational width is determined, can use certain specific process, under the prerequisite of exploitation that ensures safety; back production goes out a part of barrier pillar again; it has not only reduced Coal Loss, has improved coal mining rate and colliery economic benefit, and is less for coal reserves; and the mine that threatened by inrush through faults has more great meaning.The staying of barrier pillar established and can be prevented that the tomography exploitation from causing tomography " activation ", avoids the water in aquifer by tomography and the communication of base plate water guide crack, causes Water Inrush.Tomography " activation " can make also not that the water guide tomography is converted into the water guide tomography, causes the gushing water on face roof or the work plane direction.Need to impart knowledge to students and study for above-mentioned this common phenomenon, and the back production of science goes out a part of waterproof (protection) coal column, need a kind of strip-type filling displacement back production faults protecting coal column experimental model to learn intuitively and study for this reason.
The utility model content
For the weak point in addressing the above problem, the utility model provides a kind of strip-type filling displacement back production faults protecting coal column experimental model
For solving above technical problem, the technical solution adopted in the utility model is: a kind of strip-type filling displacement back production faults protecting coal column experimental model, comprise model support, and be provided with faults protecting coal column, obturation, tomography, moisture limestone and tomography in the model support; Obturation is used for replacing part faults protecting coal column; One side of tomography is provided with faults protecting coal column, obturation and tomography, and opposite side is provided with moisture limestone.
Novelty of the present utility model is to consider first use strip-type filling mining method, back production replacing section faults protecting coal column; The effect of model is, for different geological conditions, obtains different filling parameters.According to this experimental model, ensuring safety extraction part faults protecting coal column and not causing under the prerequisite of water inrush accident, can simulate the maximum distance of face roof under control of least residue coal pillar width and pillar extraction and stay and establish the strip coal pillar width.In this method application engineering practice, can create considerable economic worth, meet teaching and actual needs.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that tomography of the present utility model and tomography stay and establish structural representation.
Fig. 3 is exploitation faults protecting coal column structural representation of the present utility model.
The specific embodiment
As shown in Figure 1, the utility model comprises model support 1, faults protecting coal column 2, obturation 3, tomography 4, moisture limestone 5 and coal seam 6.Be provided with faults protecting coal column 2, obturation 3, tomography 4, moisture limestone 5 and coal seam 6 in the model support 1.Obturation is used for replacing part faults protecting coal column.One side of tomography is provided with faults protecting coal column 2, obturation 3 and coal seam 6, and opposite side is provided with moisture limestone 5.Obturation 3 is between coal seam 6 and faults protecting coal column 2.The direction of the direction indication stress compensation of seven arrows among Fig. 1.
The utility model is after the faults protecting coal pillar width is determined; coal column is partly protected in dummy strip formula filling displacement back production; during research filling displacement coal column, the plastic strain situation of tomography top, coal seam floor failure situation, close tomography one side coal column and adopt the situation that affects on tomography.The maximum distance of face roof under control of research least residue coal pillar width and pillar extraction is guaranteed to adopt to the under-effected of top, base plate and tomography so that on face roof, base plate or the work plane direction water inrush accident occurs.
Model carries out the model size at model support (plane strain model support): length * wide * height=3.0m * 0.4m * 2.0m.The vertical stress compensation is pressurizeed to realize with 7 hydraulic jack in the model coboundary.Model adopts the simulation face surrounding rocks such as gypsum, sand class, makes aggregate with sand, and take gypsum, calcium carbonate as binding material, layering is laid and consisted of.Rock mass to fault zone weakens, and purpose is the character that reflects tomography, and concrete condition is seen accompanying drawing 2.What L represented among Fig. 2 and Fig. 3 is the faults protecting coal pillar width.
During experiment, at distance tomography L0 place, the exploitation coal pillar width is b, reserves behind the strip coal pillar a again extraction coal pillar width b, the original exploitation space b of filling in exploitation.So circulation is gone down, until adopt distance tomography L place, returns the coal column between the obturation has been adopted and filling, and concrete back production filling process is seen accompanying drawing 3.
The method of this filling displacement back production protection coal column can be before the normal back production of tomography, the barrier pillar of first extraction part, and carry out filling, and when having adopted this part coal column, the normal tomography outside the back production barrier pillar just; Also can be after tomography have been exploited, recovery section faults protecting coal column again.
Above-mentioned embodiment is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example; the variation that those skilled in the art make in the technical solution of the utility model scope, remodeling, interpolation or replacement also all belong to protection domain of the present utility model.
Claims (1)
1. a strip-type filling displacement back production faults protecting coal column experimental model comprises model support, it is characterized in that: be provided with faults protecting coal column, obturation, tomography, moisture limestone and coal seam in the described model support; Described obturation is used for replacing part faults protecting coal column; One side of described tomography is provided with faults protecting coal column, obturation and coal seam, and opposite side is provided with moisture limestone; Described obturation is between coal seam and faults protecting coal column.
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CN 201220366541 CN202731991U (en) | 2012-07-27 | 2012-07-27 | Test model for banded filling, replacement and mining of fault protective coal pillar |
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CN 201220366541 CN202731991U (en) | 2012-07-27 | 2012-07-27 | Test model for banded filling, replacement and mining of fault protective coal pillar |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104879127A (en) * | 2015-04-24 | 2015-09-02 | 中国矿业大学 | Method for replacing coal column by floor heaving top connecting |
CN105784945A (en) * | 2016-05-03 | 2016-07-20 | 安徽理工大学 | Fluid-solid coupling simulation material for coal series pressure-bearing fault activation water inrush similarity test and preparation method |
CN106405049A (en) * | 2016-09-23 | 2017-02-15 | 山东科技大学 | Fault and secondary fault activated induced confined water gushing test method and system |
CN107013215A (en) * | 2017-05-15 | 2017-08-04 | 太原理工大学 | A kind of subregion domain construction filling mining is to reduce the method for safety pillar under wa ter bodies size |
CN112431578A (en) * | 2020-12-02 | 2021-03-02 | 山西潞安环保能源开发股份有限公司常村煤矿 | Method for extracting mine gas from low-permeability coal seam containing fault |
-
2012
- 2012-07-27 CN CN 201220366541 patent/CN202731991U/en not_active Expired - Fee Related
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104879127A (en) * | 2015-04-24 | 2015-09-02 | 中国矿业大学 | Method for replacing coal column by floor heaving top connecting |
CN104879127B (en) * | 2015-04-24 | 2017-03-15 | 中国矿业大学 | A kind of pucking connects the method that overhead changes coal column |
CN105784945A (en) * | 2016-05-03 | 2016-07-20 | 安徽理工大学 | Fluid-solid coupling simulation material for coal series pressure-bearing fault activation water inrush similarity test and preparation method |
CN105784945B (en) * | 2016-05-03 | 2018-07-06 | 安徽理工大学 | For the fluid structurecoupling simulation material and preparation method of coal measures pressure-bearing fault activation gushing water similar test |
CN106405049A (en) * | 2016-09-23 | 2017-02-15 | 山东科技大学 | Fault and secondary fault activated induced confined water gushing test method and system |
CN107013215A (en) * | 2017-05-15 | 2017-08-04 | 太原理工大学 | A kind of subregion domain construction filling mining is to reduce the method for safety pillar under wa ter bodies size |
CN112431578A (en) * | 2020-12-02 | 2021-03-02 | 山西潞安环保能源开发股份有限公司常村煤矿 | Method for extracting mine gas from low-permeability coal seam containing fault |
CN112431578B (en) * | 2020-12-02 | 2022-07-29 | 山西潞安环保能源开发股份有限公司常村煤矿 | Method for extracting mine gas from low-permeability coal seam containing fault |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20150727 |
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EXPY | Termination of patent right or utility model |