CN204877533U - Closely gas drainage system is organized in coal seam - Google Patents
Closely gas drainage system is organized in coal seam Download PDFInfo
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- CN204877533U CN204877533U CN201520138214.5U CN201520138214U CN204877533U CN 204877533 U CN204877533 U CN 204877533U CN 201520138214 U CN201520138214 U CN 201520138214U CN 204877533 U CN204877533 U CN 204877533U
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- adit
- gas
- pump
- pump drainage
- coal seam
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Abstract
The utility model discloses a well worker coal mining's gas control system aims at providing a closely gas drainage system is organized in coal seam. The utility model discloses among the technical scheme, including adit, this coal seam drilling, pump drainage hose, pump drainage pipeline, airtight, gas pump drainage pump. The adit arrange exploitation coal seam lower part close on the coal seam, adopt this coal seam drilling of helping to construct of rig perpendicular to adit two to lay a pump drainage pipeline in the tunnel. The drilling of this coal seam in carry out the hole sealing after imbedding one section pump drainage hose, pump drainage hose and pump drainage tube coupling, the pump drainage pipeline is connected with the pump drainage pump, formation gas drainage under suction network, the adit entrance lay an other pump drainage pipeline, be connected to and take out casting twine back and carry on airtightly to the adit, form the gas drainage under suction system to the adit. The gas that casting twine can block in the coal seam of lower part of taking out among this technical scheme pours in to the exploitation coal seam along the crack, has played the effect of shielding gas, has effectively reduced the gas density of exploitation coal seam working face. The utility model is used for closely the gas control of coal seam group is respond well, is applicable to well worker coal mining trade.
Description
Technical field
The utility model relates to a underground mine production technique, specifically, relate to one exploitation contiguous seams group time gas drainage technique.
Background technology
Under China's existing well, coal mining gas control means mainly contain surface drilling extraction, this coal seam is taken out in advance, and adopt suction road, Di Chou lane, elevation bore, high-order drill site, adopt the technology such as rear pipe laying extraction, utilize prior art means when exploiting contiguous seams group, gas control aspect effect is undesirable, the gas of a large amount of desorb in each coal seam, bottom pours in along crack to superjacent coal-face, both be unfavorable for Safety of Coal Mine Production, seriously fetter again the release of coal-face production capacity.
Summary of the invention
The utility model overcomes in existing technology, and when exploiting the superjacent of contiguous seams group, the gas of each coal seam desorb of bottom pours in along crack to working seam, causes working seam face gas content to increase; Provide a kind of gas control system shielding underlying seam gas and pour in working seam.。
For realizing above technical purpose, the technical solution of the utility model is:
Contiguous seams group gas drainage system, comprises adit, this coal bed drilling, pump drainage flexible pipe, pump drainage pipeline, airtight, gas exhaust pump, it is characterized in that: what described adit was arranged in working seam bottom closes in coal seam; And in tunnel, lay pump drainage pipeline, respectively to construct one group of this coal bed drilling be parallel to each other perpendicular to roadway's sides; Carry out sealing of hole after imbedding one section of pump drainage flexible pipe in this described coal bed drilling, pump drainage flexible pipe is connected with pump drainage pipeline, and pump drainage pipeline is connected with pump drainage pump, forms gas drainage under suction network.Meanwhile, lay an other pump drainage pipeline in described adit entrance, carry out airtight to adit after being connected into extraction network, form the gas drainage system to adit.
In the utility model, open gas exhaust pump, networking extraction is carried out to this coal bed drilling in adit, and tunnel extraction is carried out to adit.Now, negative pressure is formed with in this coal bed drilling of pump drainage pipeline connection, because this coal bed drilling spacing is less than or equal to the drainage radius of 2 times, therefore effectively can carry out extraction to the gas that institute's working seam bottom is closed in coal seam, because the density of gas is less than the density of air, when exploiting superjacent, the gas of desorb in each coal seam, bottom can rise on crack, finally tackled by this coal bed drilling and extract out, serving the effect of shielding gas, reduce the gas density of working seam work plane.
The beneficial effects of the utility model are, active extraction can be carried out to gas, the gas of desorb in multiple coal seam, bottom is prevented to pour in working seam coal-face, gas drainage results is good, well solve the problem that the restriction of contiguous seams group gas is produced, release coal-face production capacity, realize drawing out methane, shielding gas.
Accompanying drawing explanation
Fig. 1 is the sectional drawing of vertical adit (being parallel to this coal bed drilling);
Fig. 2 is the horizon-slice map in No. 30 coal seams;
Fig. 3 is the sectional drawing along adit direction.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further.
As Fig. 1, be made up of No. 28, No. 30, No. 31, No. 34 and No. 35 multiple coal seams one group of contiguous seams, before exploiting No. 28 coal seams, construct along No. 30 coal seams an adit (11), described adit (11) and the section tailgate (12) in No. 28 coal seams, section haulage way (13) are all parallel.Lay pump drainage pipeline (104) in adit, two help each construction one group of this coal bed drilling (102).Be parallel to each other before this coal bed drilling (102), whole hole exceeds section tailgate (12) and the section haulage way (13) of No. 28 coal seam coal-faces respectively.
As Fig. 2, bury underground in this coal bed drilling (102) after pump drainage flexible pipe (103) this coal bed drilling (102) sealing of hole, the pump drainage flexible pipe (103) of drawing in all coal bed drillings (102) is all connected with the pump drainage pipeline (104) laid in adit, pump drainage pipeline (104) is connected to gas exhaust pump (107), forms the gas drainage system to this coal bed drilling (102).Simultaneously, an other pump drainage pipeline (105) is laid in adit (11) entrance, enter airtight to adit (11) after pump drainage pipeline (105) is connected into extraction network, form the gas drainage system to adit (11).
In application process, open gas exhaust pump (107), networking extraction is carried out to this coal bed drilling (102) in adit (11), and tunnel extraction is carried out to adit (11).Now, negative pressure is formed in this coal bed drilling (102) be communicated with pump drainage pipeline (104), as Fig. 3, because this coal bed drilling (102) spacing is less than or equal to the drainage radius of 2 times, therefore effectively can carry out extraction to the gas in No. 30 coal seams; Because the density of gas is less than the density of air, when exploitation No. 28 coal seams, in No. 30, No. 31, No. 34, No. 35 coal seams, the gas of desorb can rise along mining induced fissure, pour in coal-face (101), but due to the existence of this coal bed drilling in the utility model (102), effectively can extract the gas in No. 30 coal seams out, the gas that No. 31, No. 34, No. 35 floor upwards pour in is tackled and extracted out simultaneously, realize drawing out methane, shielding gas.
Claims (5)
1. contiguous seams group gas drainage system, comprise adit (11), this coal bed drilling (102), pump drainage flexible pipe (103), pump drainage pipeline (104,105), airtight (106), gas exhaust pump (107), it is characterized in that constructing this coal bed drilling in adit (11), lay pump drainage pipeline (104,405), pump drainage flexible pipe (103), build by laying bricks or stones airtight (106).
2. contiguous seams group gas pumping technology as claimed in claim 1, the bottom that adit (11) is arranged in working seam (28) is closed in coal seam (30).
3. contiguous seams group gas drainage system as claimed in claim 1 or 2, pump drainage flexible pipe (103) is buried underground in this coal bed drilling (102), and to this coal bed drilling (102) sealing of hole, the pump drainage flexible pipe (103) of drawing in this coal bed drilling (102) is all connected with the pump drainage pipeline (104) laid in adit, the terminal of pump drainage pipeline (104) is connected to gas exhaust pump (107), forms the drainage system to this coal bed drilling (102).
4. contiguous seams group gas drainage system as claimed in claim 1 or 2, an other pump drainage pipeline (105) is laid in adit (11) entrance, be connected into extraction network and carry out airtight to adit (11), forming the drainage system to adit (11).
5. contiguous seams group gas drainage system as claimed in claim 1 or 2, this coal bed drilling is parallel to each other between (102), spacing is less than or equal to the drainage radius of 2 times, and whole hole exceeds section tailgate (12) and the section haulage way (13) of working seam (28) coal-face respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520138214.5U CN204877533U (en) | 2015-03-08 | 2015-03-08 | Closely gas drainage system is organized in coal seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520138214.5U CN204877533U (en) | 2015-03-08 | 2015-03-08 | Closely gas drainage system is organized in coal seam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204877533U true CN204877533U (en) | 2015-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520138214.5U Expired - Fee Related CN204877533U (en) | 2015-03-08 | 2015-03-08 | Closely gas drainage system is organized in coal seam |
Country Status (1)
| Country | Link |
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| CN (1) | CN204877533U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575791A (en) * | 2022-03-02 | 2022-06-03 | 淮南矿业(集团)有限责任公司 | Structure and process for extracting gas of lower protective layer through high-position high-extraction roadway and downward drilling |
-
2015
- 2015-03-08 CN CN201520138214.5U patent/CN204877533U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575791A (en) * | 2022-03-02 | 2022-06-03 | 淮南矿业(集团)有限责任公司 | Structure and process for extracting gas of lower protective layer through high-position high-extraction roadway and downward drilling |
| CN114575791B (en) * | 2022-03-02 | 2024-04-16 | 淮南矿业(集团)有限责任公司 | Structure and process for extracting gas from lower protective layer of high-level high-drainage roadway and downward drilling hole |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20200308 |