CN202736375U - Experimental model for filling, and displacing fault protection coal pillar in arch bridge type - Google Patents
Experimental model for filling, and displacing fault protection coal pillar in arch bridge type Download PDFInfo
- Publication number
- CN202736375U CN202736375U CN 201220366542 CN201220366542U CN202736375U CN 202736375 U CN202736375 U CN 202736375U CN 201220366542 CN201220366542 CN 201220366542 CN 201220366542 U CN201220366542 U CN 201220366542U CN 202736375 U CN202736375 U CN 202736375U
- Authority
- CN
- China
- Prior art keywords
- coal
- fault protection
- filling
- model
- experimental model
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses an experimental model for filling and displacing fault protection coal pillars in an arch bridge type. The experimental model comprises a coal seam, fault protection coal pillars and filling bodies, wherein the filling bodies are used for replacing part of the fault protection coal pillars; and the fault protection coal pillars are on the right side of the coal seam. The innovativeness of the experimental model lies in that the arch bridge type filling and exploiting method is taken into consideration for the first time, and part of the fault protection coal pillars are displaced. The effect of the model lies in that different filling parameters can be obtained in different geology conditions. According to the experimental model, a minimum residual coal pillar width, a maximum face width can be simulated and a strip coal pillar width is set up on the premise that safe exploitation of the part of the fault protection coal pillars is guaranteed and no inrush accidents are caused. The application of the method to engineering practice may create considerable economic value, thereby according with teaching and actual needs.
Description
Technical field
The utility model relates to a kind of empirical model, relates in particular to a kind of empirical model of arch (bridge) type filling displacement back production faults protecting coal column.
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 geologic condition 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 to establish of barrier pillar can prevent that seam mining from causing tomography " activation ", avoids the water in water-bearing zone to link up by tomography and 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 workplace 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 empirical 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 empirical model of arch (bridge) type filling displacement back production faults protecting coal column
For solving above technical matters, the technical solution adopted in the utility model is: a kind of empirical model of arch (bridge) type filling displacement back production faults protecting coal column, comprise coal seam, faults protecting coal column and obturation, and obturation is used for replacing part faults protecting coal column; The right side in described coal seam is the faults protecting coal column.
Novelty of the present utility model is to consider first use arch (bridge) 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 empirical model, ensuring safety extraction part faults protecting coal column and not causing under the prerequisite of water inrush accident, can simulate the maximum face width of least residue coal pillar width and pillar extraction and strip filling 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 coal seam are stayed and established structural representation.
Fig. 3 is exploitation faults protecting coal column structural representation of the present utility model.
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.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.The right side in coal seam 6 is faults protecting coal column 2, and obturation 3 is positioned at faults protecting coal column 2 the insides, and obturation is 3, and coal seam 6 is connected with obturation 3.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 simulation arch (bridge) type filling displacement back production; during research filling displacement coal column, the plastic yield situation of top, coal seam, coal seam floor failure situation, close tomography one side coal column and adopt the situation that affects on tomography.The maximum face width 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 workplace 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 perpendicular 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 distributed fault 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 allows it be caving voluntarily, 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 in coal seam, the barrier pillar of first extraction part, and carry out filling, and when having adopted this part coal column, the normal coal seam outside the back production barrier pillar just; Also can be after seam mining be complete, 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. the empirical model of an arch (bridge) type filling displacement back production faults protecting coal column comprises coal seam, faults protecting coal column and obturation, and it is characterized in that: described obturation is used for replacing part faults protecting coal column; The right side in described coal seam is the faults protecting coal column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220366542 CN202736375U (en) | 2012-07-27 | 2012-07-27 | Experimental model for filling, and displacing fault protection coal pillar in arch bridge type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220366542 CN202736375U (en) | 2012-07-27 | 2012-07-27 | Experimental model for filling, and displacing fault protection coal pillar in arch bridge type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202736375U true CN202736375U (en) | 2013-02-13 |
Family
ID=47662053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220366542 Expired - Fee Related CN202736375U (en) | 2012-07-27 | 2012-07-27 | Experimental model for filling, and displacing fault protection coal pillar in arch bridge type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202736375U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110599884A (en) * | 2018-06-12 | 2019-12-20 | 中国石油化工股份有限公司 | Physical simulation experiment method and experiment model for land-based breaking structure |
-
2012
- 2012-07-27 CN CN 201220366542 patent/CN202736375U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110599884A (en) * | 2018-06-12 | 2019-12-20 | 中国石油化工股份有限公司 | Physical simulation experiment method and experiment model for land-based breaking structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Yuan | Theory and practice of integrated coal production and gas extraction | |
| CN105735995B (en) | A kind of loose roof cuts the gob-side entry retaining method under top | |
| Deng et al. | Feasibility analysis of gob-side entry retaining on a working face in a steep coal seam | |
| CN103161480B (en) | Initiatively support the method for roadside packing gob side entry retaining | |
| CN102966354B (en) | Non-pillar mining method for hard roof coal wall of thick coal seam | |
| Guo et al. | Numerical simulation of overburden and surface movements for Wongawilli strip pillar mining | |
| CN202731991U (en) | Test model for banded filling, replacement and mining of fault protective coal pillar | |
| CN103244123B (en) | High-dipping medium thick ore body mining method | |
| CN102758630B (en) | Method for extracting part of fault protection coal pillars | |
| CN103061806A (en) | Composite roof thin seam fully-mechanized coal mining face gob-side entry retaining method | |
| CN104330107A (en) | Method for evaluating filling quality of solid filling coal mining working face | |
| CN103758529A (en) | Coal mine gob-side entry retaining side supporting method | |
| CN104074534B (en) | A kind of combining adopts/the gob-side entry retaining method of fully mechanized coal face | |
| CN104100271A (en) | Side-supporting roadway forming method by pre-digging guide cavern and filling with artificial side wall for secondary use | |
| CN104790953A (en) | Boundary coal shortwall continuously-mining tunnel arrangement and coal pillar preserving methods | |
| Su | Effects of longwall-induced stress and deformation on the stability and mechanical integrity of shale gas wells drilled through a longwall abutment pillar | |
| CN204386632U (en) | The artificial base plate of large-inclination-angle coal bed roof cracking band and false top facility | |
| CN202736375U (en) | Experimental model for filling, and displacing fault protection coal pillar in arch bridge type | |
| CN112780276A (en) | Fully-closed blasting pressure relief structure for grouting reconstruction of composite roof and self-retained roadway method | |
| Wang et al. | Analysis of cooperative control effect of pressure relief and long bolt support for deep roadway under strong mining disturbance of adjacent working face | |
| Wen et al. | Structure model of roadway with large deformation and its basic research into engineering theories | |
| CN104763423B (en) | Technology for mining powder ore by inverse well rock drilling | |
| CN204405654U (en) | A kind of device of simulating goaf exploitation | |
| CN203239356U (en) | Supporting and protecting device applied to deep development roadway | |
| CN103557006B (en) | Tunnel reasonable Arrangement method under large area tight roof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |
|
| EXPY | Termination of patent right or utility model |