CN102758630B - Method for extracting part of fault protection coal pillars - Google Patents
Method for extracting part of fault protection coal pillars Download PDFInfo
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- CN102758630B CN102758630B CN201210262343.6A CN201210262343A CN102758630B CN 102758630 B CN102758630 B CN 102758630B CN 201210262343 A CN201210262343 A CN 201210262343A CN 102758630 B CN102758630 B CN 102758630B
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Abstract
The invention discloses a method for extracting a part of fault protection coal pillars. The method is used for replacing a part of fault protection coal pillars by applying fill mining methods. The method is divided into four categories, namely, a method for replacing and extracting the fault protection coal pillars by adopting a strip-type filling manner, a method for replacing and extracting the fault protection coal pillars in an arch-bridge type filling manner, a method for replacing and extracting the fault protection coal pillars in a continuous filling manner and a method for replacing and extracting the fault protection coal pillars by an interval-type filling manner. The method disclosed by the invention has the advantages of replacing a part of the fault protection coal pillars in consideration of using filling mining methods for the first time. According to the invention, different filling method can be given according to circumstances aiming at different geological conditions, the minimum fault protection coal pillar is set on the premise of ensuring that a part of fault protection coal pillars are safely extracted and no water burst accident is caused. The method disclosed by the invention can be widely applied to engineering practices of extracting the fault protection coal pillars in various geological conditions, realizes maximized utilization of resources, can create considerable economic values and is more scientific and practical.
Description
Technical field
The present invention relates to a kind of method of back production part faults protecting coal column, be specially a kind of series methods using filling mining method back production part faults protecting coal column, belong to colliery special exploitation technical field.
Background technology
Mine floor water inrush accident about 80% is all relevant with tomography.Address this problem, targetedly some measures, as grout transformation, leting speeper with stay water of setting up defences (protection) coal column etc., wherein stay and establish barrier pillar the most common.According to the regulation in code, fault waterproof pillar stays establishes width to be at least 20m, and at some mine, because geological conditions is severe, the width of barrier pillar has even exceeded 100m.Although stay the guarantee of establishing protection coal pillar to improve safe coal back production; but also result in the loss of resource; if after barrier pillar rational width is determined, certain specific process can be used, under the prerequisite of exploitation that ensures safety; back production goes out a part of barrier pillar again; it not only reduces Coal Loss, improves coal mining rate and colliery economic benefit, less for coal reserves; and by the mine that inrush through faults threatens, there is more great meaning.The staying of barrier pillar is established and can be prevented tomography exploitation from causing tomography " activation ", avoids the water in aquifer to be linked up by tomography and base plate water producing fractures, causes Water Inrush.Tomography " activation ", also can make not water conductive fault be converted into water conductive fault, cause the gushing water on face roof or work plane direction.Both wanted to separate and released part faults protecting coal column, and reduced resources loss, avoid fault activation to cause water inrush accident again, not yet provide effective method and measure at present.But coal is non-renewable resources; coal mining dynamics not only strengthens; the research reducing Coal Loss is very urgent; for this part resources loss of faults protecting coal column; be necessary to further investigate, the back production inventing a set of science goes out the method for part tomography (waterproof) protection coal pillar.
Summary of the invention
The invention provides a kind of method of back production part faults protecting coal column, be that further back production goes out part faults protecting coal column order, carry out the utilization of resource to greatest extent.
For solving above technical problem, the technical solution used in the present invention is: a kind of method of back production part faults protecting coal column, and it uses the method replacing section faults protecting coal column of filling mining, and its method is divided into four classes, concrete grammar and operating procedure as follows:
A. strip-type filling displacement back production faults protecting coal column method:
After the rational width L of faults protecting coal column determines, at distance tomography L
1place, exploitation coal pillar width is b, to reserve after strip coal pillar a extraction coal pillar width b, the exploitation space b that filling is original while exploiting again; Circulation like this is gone down, until adopt distance tomography L place, then the coal column between returning obturation has been adopted and filling;
B. arch (bridge) type filling displacement back production faults protecting coal column method:
After the rational width L of faults protecting coal column determines, at distance tomography L
2place, exploitation coal pillar width is b, to reserve after strip coal pillar a extraction coal pillar width b, the exploitation space b that filling is original while exploiting again; Circulation like this is gone down, until adopt distance tomography L place, then the coal column between returning obturation has been adopted, and no longer carries out filling, allows it be caving voluntarily;
C. continuous filling displacement back production faults protecting coal column method:
After the rational width L of faults protecting coal column determines, at distance tomography L
3place's exploitation protection coal pillar, when controlling top width degree and reaching c, just at rear, goaf filling d, so circulates, and meets c and fills d, until adopt distance tomography L place;
D. compartment filling displacement back production faults protecting coal column method:
After the rational width L of faults protecting coal column determines, at distance tomography L
4place's exploitation protection coal pillar, when control top width degree reaches c, just the empty e filling d at rear, goaf, continues exploitation, and when controlling top width degree and reaching and reach c, then at rear, goaf sky e filling d, so circulation is gone down, until adopt distance tomography L place.
Superiority of the present invention is to consider first and uses filling mining method, displaces part faults protecting coal column; The present invention can for different geological conditions, and that suits measures to local conditions provides different placement methods, is ensuring safety extraction part faults protecting coal column and under not causing the prerequisite of water inrush accident, stay and establish minimum faults protecting coal column.This method can be widely used in the engineering practice of back production faults protecting coal column under various geological conditions, realizes the maximum using of resource, can create considerable economic worth, more science, practicality.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is structural representation of the present invention.
Fig. 2 is strip-type filling displacement back production faults protecting coal column method schematic diagram.
Fig. 3 is arch (bridge) type filling displacement back production faults protecting coal column method schematic diagram.
Fig. 4 is continuous filling displacement back production faults protecting coal column method schematic diagram.
Fig. 5 is compartment filling displacement back production faults protecting coal column method schematic diagram.
In figure: 1. coal seam, 2. obturation, 3. moisture limestone, 4. tomography, L. former faults protecting coal column rational width, L
0(L
1~ L
1). minimum faults protecting coal column, a. strip coal pillar width, b. mining width, the maximum distance of face roof under control of c., d. filling width, e. filling spacing after filling displacement.
Detailed description of the invention
The present invention is according to coal mining relevant regulations; after faults protecting coal column rational width L determines; adopt strip-type, arch (bridge) type, continous way and compartment four kinds of modes; filling displacement back production part tomography (waterproof) protection coal pillar; during research filling displacement coal column, tomography top, coal seam floor failure situation, near tomography side coal column plastic strain situation and adopt situation affected on tomography.Filling parameters respective in research least residue coal pillar width and the maximum distance of face roof under control of pillar extraction and four kinds of series methods, guarantee to adopt to pushing up, base plate and tomography under-effected to make water inrush accident occurs for face roof, base plate or work plane direction.
Four kinds of mining types, concrete grammar and step as follows:
1, strip-type filling displacement back production faults protecting coal column method:
As shown in Figure 2, after the rational width L of faults protecting coal column determines, at distance tomography L
1place, exploitation coal pillar width is b, to reserve after strip coal pillar a extraction coal pillar width b, the exploitation space b that filling is original while exploiting again; Circulation like this is gone down, until adopt distance tomography L place, then the coal column between returning obturation has been adopted and filling.
2, arch (bridge) type filling displacement back production faults protecting coal column method:
As shown in Figure 3, after the rational width L of faults protecting coal column determines, at distance tomography L
2place, exploitation coal pillar width is b, to reserve after strip coal pillar a extraction coal pillar width b, the exploitation space b that filling is original while exploiting again; Circulation like this is gone down, until adopt distance tomography L place, then the coal column between returning obturation has been adopted, and no longer carries out filling, allows it be caving voluntarily.
3, continuous filling displacement back production faults protecting coal column method:
As shown in Figure 4, after the rational width L of faults protecting coal column determines, at distance tomography L
3place's exploitation protection coal pillar, when controlling top width degree and reaching c, just at rear, goaf filling d, so circulates, and meets c and fills d, until adopt distance tomography L place.
4, compartment filling displacement back production faults protecting coal column method:
As shown in Figure 5, after the rational width L of faults protecting coal column determines, at distance tomography L
4place's exploitation protection coal pillar, when control top width degree reaches c, just the empty e filling d at rear, goaf, continues exploitation, and when controlling top width degree and reaching and reach c, then at rear, goaf sky e filling d, so circulation is gone down, until adopt distance tomography L place.
The method of above-mentioned four kinds of fillings displacement back production protection coal pillar can before the normal back production of tomography, the barrier pillar of first extraction part, and carries out filling, when having adopted this part coal column, and just can tomography normally outside back production barrier pillar; Also can after seam mining be complete, then recovery section faults protecting coal column.
Four above-mentioned class embodiments are not limitations of the present invention; the present invention is also not limited in above-mentioned citing; the change that those skilled in the art make within the scope of technical scheme of the present invention, remodeling, interpolation or replacement, also all belong to protection scope of the present invention.
Claims (1)
1. a method for back production part faults protecting coal column, is characterized in that: it uses the method replacing section faults protecting coal column of filling mining, and its method is divided into four classes, concrete grammar and operating procedure as follows:
A. strip-type filling displacement back production faults protecting coal column method:
After the rational width L of faults protecting coal column determines, at distance tomography L
1place, exploitation coal pillar width is b, to reserve after strip coal pillar a extraction coal pillar width b, the exploitation space b that filling is original while exploiting again; Circulation like this is gone down, until adopt distance tomography L place, then the coal column between returning obturation has been adopted and filling;
B. arch (bridge) type filling displacement back production faults protecting coal column method:
After the rational width L of faults protecting coal column determines, at distance tomography L
2place, exploitation coal pillar width is b, to reserve after strip coal pillar a extraction coal pillar width b, the exploitation space b that filling is original while exploiting again; Circulation like this is gone down, until adopt distance tomography L place, then the coal column between returning obturation has been adopted, and no longer carries out filling, allows it be caving voluntarily;
C. continuous filling displacement back production faults protecting coal column method:
After the rational width L of faults protecting coal column determines, at distance tomography L
3place's exploitation protection coal pillar, when controlling top width degree and reaching c, just at rear, goaf filling d, so circulates, and meets c and fills d, until adopt distance tomography L place;
D. compartment filling displacement back production faults protecting coal column method:
After the rational width L of faults protecting coal column determines, at distance tomography L
4place's exploitation protection coal pillar, when control top width degree reaches c, just the empty e filling d at rear, goaf, continues exploitation, and when controlling top width degree and reaching again c, then at rear, goaf sky e filling d, so circulation is gone down, until adopt distance tomography L place.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291303B (en) * | 2013-06-27 | 2016-02-17 | 山东科技大学 | A kind ofly stay the exploitation method of establishing strip coal pillar |
| CN103924976B (en) * | 2014-04-04 | 2016-10-19 | 太原理工大学 | A kind of method in outdoor second mining Guo Canmei district |
| CN105422099B (en) * | 2015-12-11 | 2018-05-25 | 太原理工大学 | A kind of bilateral method that all coal column is left in the residual exploiting field of filling second mining by column |
| CN107013215B (en) * | 2017-05-15 | 2018-11-30 | 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 |
| CN109236296B (en) * | 2018-08-02 | 2019-09-13 | 缪协兴 | A kind of design method of safe working water conservation coal column |
| CN114837663B (en) * | 2022-05-20 | 2023-01-17 | 安徽建筑大学 | Construction method for improving recovery rate of fault waterproof coal pillar through ground pre-grouting |
| CN116906046B (en) * | 2023-07-27 | 2024-02-06 | 山东省煤田地质局第四勘探队 | Working surface fault passing method based on coal field geological exploration |
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| CN1952349A (en) * | 2006-11-09 | 2007-04-25 | 中国矿业大学 | Mining method for replacement of pressed coal under village by waste rock |
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| US4377353A (en) * | 1978-08-03 | 1983-03-22 | Granges Ab | Method of selective underground mining and stabilization of rock cavities |
| CN1952349A (en) * | 2006-11-09 | 2007-04-25 | 中国矿业大学 | Mining method for replacement of pressed coal under village by waste rock |
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| Title |
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| 条带充填法煤柱稳定性影响因素数值模拟试验研究;柳宏儒;《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》;20120315(第03期);文章的第2.3-2.4节，图2.1-2.34 * |
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