CN203452840U - Coal mine gas drainage structure with high-position drainage drill site and drill holes - Google Patents
Coal mine gas drainage structure with high-position drainage drill site and drill holes Download PDFInfo
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- CN203452840U CN203452840U CN201320514948.XU CN201320514948U CN203452840U CN 203452840 U CN203452840 U CN 203452840U CN 201320514948 U CN201320514948 U CN 201320514948U CN 203452840 U CN203452840 U CN 203452840U
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Abstract
The utility model belongs to the field of pressure relief gas drainage in an entitative coal seam and a neighboring seam and accumulated gas drainage in a goaf, particularly relates to a coal mine gas drainage structure with a high-position drainage drill site and drill holes and solves the problem of accumulated gas drainage. The coal mine gas drainage structure with the high-position drainage drill site and the drill holes comprises a ventilation roadway and an intake airflow roadway; a connection roadway is communicated between the ventilation roadway and the intake airflow roadway; the connection roadway is provided with an inclined drift; one end of the inclined drift is provided with the high-position drainage drill site; a row of drill holes are arranged in the high-position drainage drill site. The coal mine gas drainage structure with the high-position drainage drill site and the drill holes effectively solves the problem of accumulated gas drainage and is suitable for pressure relief gas drainage in the entitative coal seam and the neighboring seam and accumulated gas drainage in the goaf.
Description
Technical field
The utility model belongs to this coal seam, adjacent layer gas pressure relief, accumulated methane extraction field, goaf, specifically the high drilling holes at the drilling yard gas drainage under suction structure of taking out in a kind of colliery.
Background technology
Highly gassy mine fully-mechanized mining working gas emission is large, and gas source is mainly goaf gas, and goaf gas is gushed out and mainly adjacent layer gas pressure relief and Residual coal in goaf gas, consisted of.Goaf gas is carried out to extraction, can reduce the gas amount of coal-face, be conducive to safety in production.Generally used in recent years goaf pipe laying, High Position Drilling, high-order lane, height to take out the modes such as drill site goaf gas is carried out to extraction.Pipe laying method is generally laid the pre-buried pipeline of goaf gas drainage at return airway, on pipeline, every a tee piece of a segment distance serial connection, (at tee piece, not yet enter before goaf, its open to atmosphere one end blocks with flange), as the air entry of goaf gas drainage.High Position Drilling be at air way to roof construction drill, Main Function is to using the gas that top board crack that working face extraction mining pressure forms comes extraction working face wall and upper corner to gush out as passage.High-order lane is arranged in top board fissure zone, and when top board is for the first time across backwardness, mobile along crack to goaf by the gas of adjacent layer and country rock desorb, high-order lane can be extracted the next layer gas out.
Summary of the invention
The utility model, in order to solve the problem of accumulated methane extraction, provides a kind of colliery the high drilling holes at the drilling yard gas drainage under suction structure of taking out especially.
In order to address the above problem, the utility model is taked following technical scheme: the high drilling holes at the drilling yard gas drainage under suction structure of taking out in a kind of colliery, comprise return airway and air intake lane, between return airway and air intake lane, be communicated with the horizontal river of contact, get in touch with horizontal river and be provided with inclined gallery, one end, inclined gallery is provided with height and takes out drill site, and height is taken out and in drill site, is furnished with a row hole drilling.
Described, height is taken out boring in drill site and is inverted U-shaped and is furnished with 16, and height is taken out in drill site and inclined gallery and is filled with chemical material.
Described, 1.5 meters of drillhole heights, 54～138 meters of drilling depths, aperture 94mm, inclination angle, 187 °～337 °, azimuth is that level is faced upward 3.31 °～8.4 °, and height is taken out about drill site two and helped 0.8 meter of the spacing of wells, and it is 10 meters that height is taken out the drill site left and right two whole pitch of holes of helping to hole, height is taken out 0.7 meter of the drill site center spacing of wells, and the whole pitch of holes of boring that height is taken out drill site center is 30 meters.
The utility model has solved the problem of accumulated methane extraction effectively, is applicable to this coal seam, adjacent layer gas pressure relief, goaf accumulated methane extraction.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is that height is taken out drill site sectional view;
The high drilling holes at the drilling yard arrangement diagram of taking out of Fig. 3
1-air intake lane in figure, 2-gets in touch with horizontal river, 3-return airway, the high drill site of taking out of 4-, 5-inclined gallery.
The specific embodiment
The Shanxi Province's coal bed gas joint study Projects With Nsfc Aid 2012012009 of take is example, as shown in Figure 1, the high drilling holes at the drilling yard gas drainage under suction structure of taking out in a kind of colliery, comprise return airway 3 and air intake lane 1, between return airway 3 and air intake lane 1, be communicated with the horizontal river 2 of contact, get in touch with horizontal river 2 and be provided with height and take out drill site 4, height is taken out and in drill site 4, is furnished with a row hole drilling.By return airway, to air intake lane vertical direction, press 30 ° of climbing construction inclined gallery, the 6 meters of gallery cloth of then constructing set high takes out drill site 4, and height is taken out brill, and 4 are positioned at 12 meters of roof tops.It is wide 4 meters that height is taken out drill site 4, high 2.5 meters, and inclined gallery are wide 2 meters, high 2.5 meters, and long 26 meters, height is taken out the right side of drill site and air intake lane at a distance of 3 meters.
Height is taken out boring in drill site 4 and is inverted U-shaped and is furnished with 16, and height is taken out in drill site 4 and inclined gallery 5 and is filled with chemical material.
1.5 meters of drillhole heights, 54～138 meters of drilling depths, aperture 94mm, inclination angle, 187 °～337 °, azimuth is that level is faced upward 3.31 °～8.4 °, height is taken out drill site 4 left and right two and is helped 0.8 meter of the spacing of wells, it is 10 meters that height is taken out the drill site 4 left and right two whole pitch of holes of helping to hole, and height is taken out 0.7 meter of the drill site 4 center spacing of wells, and the whole pitch of holes of boring that height is taken out drill site 4 centers is 30 meters.
Claims (3)
1. the high drilling holes at the drilling yard gas drainage under suction structure of taking out in colliery, comprise return airway (3) and air intake lane (1), between return airway (3) and air intake lane (1), be communicated with contact horizontal river (2), it is characterized in that: get in touch with horizontal river (2) and be provided with inclined gallery (5), one end, inclined gallery (5) is provided with height and takes out drill site (4), and height is taken out in drill site (4) and is furnished with a row hole drilling.
2. the high drilling holes at the drilling yard gas drainage under suction structure of taking out in colliery according to claim 1, is characterized in that: height is taken out boring in drill site (4) and is inverted U-shaped and is furnished with 16, and height is taken out in drill site (4) and inclined gallery (5) and is filled with chemical material.
3. the high drilling holes at the drilling yard gas drainage under suction structure of taking out in colliery according to claim 1 and 2, it is characterized in that: 1.5 meters of drillhole heights, 54～138 meters of drilling depths, aperture 94mm, inclination angle, 187 °～337 °, azimuth is that level is faced upward 3.31 °～8.4 °, and height is taken out about drill site (4) two and helped 0.8 meter of the spacing of wells, and it is 10 meters that height is taken out drill site (4) the left and right two whole pitch of holes of helping to hole, height is taken out 0.7 meter of drill site (4) the center spacing of wells, and the whole pitch of holes of boring that height is taken out drill site (4) center is 30 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320514948.XU CN203452840U (en) | 2013-08-22 | 2013-08-22 | Coal mine gas drainage structure with high-position drainage drill site and drill holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320514948.XU CN203452840U (en) | 2013-08-22 | 2013-08-22 | Coal mine gas drainage structure with high-position drainage drill site and drill holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203452840U true CN203452840U (en) | 2014-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320514948.XU Expired - Lifetime CN203452840U (en) | 2013-08-22 | 2013-08-22 | Coal mine gas drainage structure with high-position drainage drill site and drill holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203452840U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948167A (en) * | 2015-07-15 | 2015-09-30 | 贵州盘江精煤股份有限公司 | Method for observing single-hole gas concentration after seal of high-location drilling field of return airway |
-
2013
- 2013-08-22 CN CN201320514948.XU patent/CN203452840U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948167A (en) * | 2015-07-15 | 2015-09-30 | 贵州盘江精煤股份有限公司 | Method for observing single-hole gas concentration after seal of high-location drilling field of return airway |
| CN104948167B (en) * | 2015-07-15 | 2018-03-13 | 贵州盘江精煤股份有限公司 | A kind of method of observation single hole gas density after return airway high position drill site is closed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |