CN203145995U - High-level drilling field structure for treatment of coal face gas - Google Patents
High-level drilling field structure for treatment of coal face gas Download PDFInfo
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- CN203145995U CN203145995U CN 201320017130 CN201320017130U CN203145995U CN 203145995 U CN203145995 U CN 203145995U CN 201320017130 CN201320017130 CN 201320017130 CN 201320017130 U CN201320017130 U CN 201320017130U CN 203145995 U CN203145995 U CN 203145995U
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- coal
- coal face
- face
- gas
- drilling field
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Abstract
The utility model discloses a high-level drilling field structure for treatment of coal face gas. The high-level drilling field structure comprises a coal face return airway (1). A high-level drilling field (2) is 20-25m vertically away from the coal face return airway (1) and comprises six boreholes. The six boreholes of the high-level drilling field (2) are all not larger than 25m horizontally away from the coal face return airway (1). The problem that the conventional high-level roadway drainage method for coal face gas accumulated by a coal face reverse-ventilation system is high in cost and low in gas drainage amount is solved; and the problems that a plurality of ferrous products in a drainage goaf are prone to mutual friction and generate flame so as to cause high risk, poor reliability and the like are solved.
Description
Technical field
The utility model relates to mine gas and administers technical field, relates in particular to the high-order drill site of administering coal-face gas.
Background technology
In China, the work face coal mining method overwhelming majority under the coal mine is to adopt the wall coal work plane, the ventilation system overwhelming majority that the wall coal work plane adopts is coal-face inverted ventilation system, coal-face inverted ventilation system acts on quite obvious in the downhole production of colliery, has simple, highly efficient and productive, the simple and easy to do effect of production system from producing, has unstable airflow from ventilation system safety, few unique superiority of leaking out, so the layout of coal-face inverted ventilation system is method for arranging main under the coal mine; And the disadvantage of this work plane inverted ventilation system wall type coal-face is face upper corner angle methane accumulation (being the methane accumulation of drag conveyor tail).Coal-face upper corner gas density substantially exceeds " safety regulations in coal mine " regulation, gas explosion at longwall face is seriously threatening practitioner's life security and the safety in production under the coal mine, it is the coal-face major hidden danger, it also is major hazard source, it is a great problem that perplexs Safety of Coal Mine Production for a long time, so far the whole nation and even the whole world real great difficult problem in worldwide colliery that solves as yet, traditional extraction coal-face upper corner gas adopts high-order extraction lane to carry out usually, but adopt high-order extraction lane mode gas extraction, there is the cost height, gas extraction amount is little, and having a lot of ironworks in the extraction goaf exists, problems such as friction generation flame causes danger big mutually easily, and reliability is not high.
Summary of the invention
The technical problems to be solved in the utility model: a kind of high-order drill site structure of administering coal face gas is provided, to solve the coal-face methane accumulation that coal-face inverted ventilation system causes, adopt conventional high-order extraction lane mode gas extraction, there is the cost height, gas extraction amount is little, and have a lot of ironworks in the extraction goaf and exist, easily mutually friction produce flame cause dangerous big, problem such as reliability is not high.
Technical solutions of the utility model:
A kind of high-order drill site structure of administering coal face gas, it comprises the coal-face return airway, the vertical distance of high-order drill site and coal-face return airway is 20-25 rice, high-order drill site comprises 6 borings, and 6 boring of high-order drill site and the horizontal range of coal-face return airway all are not more than 25 meters.
The beneficial effects of the utility model:
The utility model adopts high-order drill site internal drilling to carry out gas drainage under suction, replace traditional high-order extraction lane and carry out gas drainage under suction, reduced the ironwork that enters the goaf, effectively stop the generation of goaf friction flame, has extraction concentration height, the amount of drawing out methane is big, advantages such as regulation effect is good, solve the coal-face methane accumulation that coal-face inverted ventilation system causes, adopted conventional high-order extraction lane mode gas extraction, had the cost height, gas extraction amount is little, and have a lot of ironworks in the extraction goaf and exist, easily mutually friction produce flame cause dangerous big, problem such as reliability is not high.
Description of drawings:
Fig. 1 is the utility model position view.
Embodiment:
A kind of high-order drill site structure of administering coal face gas, it comprises coal-face return airway 1, high-order drill site 2 is 20-25 rice with the vertical distance of coal-face return airway 1, high-order drill site 2 comprises 6 borings, and 6 boring of high-order drill site 2 and the horizontal range of coal-face return airway 1 all are not more than 25 meters.
Distance between 6 borings of high-order drill site 2 is 600-700mm, and the degree of depth is 80-90 rice, and diameter is 200-215mm.
Wherein 4 bore positions of high-order drill site 2 and the horizontal range of coal-face return airway 1 are 18-20 rice, the horizontal range of one of them bore position and coal-face return airway 1 is 18-20 rice, and the horizontal range of last bore position and coal-face return airway 1 is 25 meters.
Bore position is avoided area of stress concentration, and not to be made in lithology better as far as possible, the zone that solid coefficient is bigger.Dip angle of hole is positive 1-3 degree, is convenient to the deslagging of holing.
Claims (1)
1. high-order drill site structure of administering coal face gas, it comprises coal-face return airway (1), it is characterized in that: high-order drill site (2) is 20-25 rice with the vertical distance of coal-face return airway (1), high-order drill site (2) comprises 6 borings, and 6 boring of high-order drill site (2) and the horizontal range of coal-face return airway (1) all are not more than 25 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320017130 CN203145995U (en) | 2013-01-14 | 2013-01-14 | High-level drilling field structure for treatment of coal face gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320017130 CN203145995U (en) | 2013-01-14 | 2013-01-14 | High-level drilling field structure for treatment of coal face gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203145995U true CN203145995U (en) | 2013-08-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320017130 Expired - Fee Related CN203145995U (en) | 2013-01-14 | 2013-01-14 | High-level drilling field structure for treatment of coal face gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203145995U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481540A (en) * | 2014-10-08 | 2015-04-01 | 六盘水师范学院 | Method for controlling multiple coal mining hazards by high level borehole grouting |
-
2013
- 2013-01-14 CN CN 201320017130 patent/CN203145995U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481540A (en) * | 2014-10-08 | 2015-04-01 | 六盘水师范学院 | Method for controlling multiple coal mining hazards by high level borehole grouting |
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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: 20130821 Termination date: 20160114 |