CN201334869Y - Pressured air drilling equipment used in downhole loose and soft coal seam with potential gas outburst - Google Patents
Pressured air drilling equipment used in downhole loose and soft coal seam with potential gas outburst Download PDFInfo
- Publication number
- CN201334869Y CN201334869Y CNU2008202224365U CN200820222436U CN201334869Y CN 201334869 Y CN201334869 Y CN 201334869Y CN U2008202224365 U CNU2008202224365 U CN U2008202224365U CN 200820222436 U CN200820222436 U CN 200820222436U CN 201334869 Y CN201334869 Y CN 201334869Y
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- hole
- drilling equipment
- coal bed
- inner core
- proof pvc
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- 239000003245 coal Substances 0.000 title claims abstract description 54
- 238000005553 drilling Methods 0.000 title claims abstract description 50
- 239000000428 dust Substances 0.000 claims abstract description 31
- 239000007921 spray Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000779 smoke Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000004880 explosion Methods 0.000 abstract 2
- 238000005507 spraying Methods 0.000 abstract 1
- 238000005086 pumping Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 241001074085 Scophthalmus aquosus Species 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000003818 cinder Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
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Abstract
The utility model relates to pressured air drilling equipment used in a downhole loose and soft coal seam with potential gas outburst. At present, the in-seam hole drilling with high construction speed, low cost and high gas drainage efficiency becomes the main choice for preventing and controlling coal and gas outburst. The pressured air drilling equipment comprises a drilling rig, an air compressor, an orifice dust collecting/removal device, a high-intensity large-through hole drilling rod, a drill bit with an automatically-shed inner core, an antistatic explosion proof PVC sieve tube. The air outlet of the air compressor is connected with the large-through hole drilling rod via a high pressure pipe, the orifice dust collecting/removal device is connected with an orifice pipe and is provided therein with a spray nozzle for spraying water fog, vent holes are formed on the wall of the antistatic explosion proof PVC sieve tube, and the drill bit consists of an automatically-shed inner core and a drill bit body. The pressured air drilling equipment is helpful for improving the hole-forming rate of the in-seam hole drilling in the loose and soft coal seam with potential gas outburst, improves gas drainage effect, improves the downhole air drilling working atmosphere, and ensures the safe production of a coal mine with potential gas outburst.
Description
Technical field
The utility model relates to creeping under the coal mine to be equipped and process matching, is specifically related to the soft projecting coal bed middle blast air drilling equipment in a kind of down-hole.
Technical background
Control coal and gas are outstanding to be the great task that China's coal-mine faces, and is the essential measure of guaranteeing mine safety and carry out gas pumping.Since country's promulgation control of coalmine gas policy, the gas pumping technology is growing.The particularly intensive application of wearing layer hole of grid type for alleviating soft projecting coal bed gas control pressure, improve gas pumping efficient, reducing coal and gas outburst risk, has been played positive effect.But wear the great in constructing amount of layer hole simultaneously, the cost height, speed is low.And compare with wearing a layer hole, with the obvious advantage along the gas pumping of layer boring: as all to be in inside, coal seam along layer boring, effectively extraction rate height; Fast along layer drilling construction speed, cost is low.For the advantage of maximum performance, must improve hole depth and aperture along layer boring along layer boring.For soft projecting coal bed for, regularity of coal seam is poor, the gas bearing capacity height, pressure is big, along the hole lock of tool drilling that easily collapses in the layer drilling construction process, has limited to the application in suitable layer of hole so again.At present, domestic governing problem for soft projecting coal bed gas adopts the indirect layer hole method of wearing mostly; And adopt a mine along layer hole pumping and mining gas, and it is limited along layer drilling construction degree of depth, and substantially all below 100m, and boring aperture is less.How improving soft projecting coal bed gas control efficient is the important topic of studying at present.
From present technical development situation, the main selection that speed of application is fast, cost is low, the gas pumping rate is high along layer boring will becoming colliery control coal and gas control.For soft projecting coal bed, the one-tenth porosity of holing along layer has just directly determined gas pumping efficient especially.In order to improve the one-tenth porosity of weak seam, need present conventional construction equipment and process matched therewith be improved along layer boring.
The utility model content
The utility model provides a kind of down-hole soft projecting coal bed middle blast air drilling equipment, can improve a present suitable layer hole construction method at soft projecting coal bed gas control, and increase is along effective hole depth in layer hole, and raising becomes porosity along layer hole; Help the coal-bed gas extraction, reduce the outstanding disaster occurrence probability of coal and gas; Reduce the protrusion-dispelling cost, improve safety production efficiency.
Soft projecting coal bed middle blast air drilling equipment under the coal mine described in the utility model, comprise rig, air compressor machine, aperture control of dust dust arrester, high strength large through-hole drilling rod, inner core come off automatically drill bit and antistatic explosion-proof PVC screen casing, it is characterized in that: the air compressor machine air outlet directly is connected with drilling rod with high-voltage tube, provides the pressure wind regime by drill pipe bore in boring.
Soft projecting coal bed middle blast air drilling equipment under the described coal mine, its aperture control of dust dust arrester directly is connected with orifice tube, and borehole sealing is become a confined space, helps the unified collection and treatment of cinder in the hole.
Under the described coal mine soft projecting coal bed in blast air drilling equipment, its aperture control of dust dust arrester when work, by shower nozzle to dust arrester internal spray water smoke to help the dirt that disappears.
Soft projecting coal bed middle blast air drilling equipment under the described coal mine, its high strength large through-hole drilling rod internal diameter is greater than antistatic explosion-proof PVC screen casing external diameter, can satisfy the intensity needs that normally creep into, also can satisfy the space requirement of carrying antistatic explosion-proof PVC screen casing in the drilling rod.
Soft projecting coal bed middle blast air drilling equipment under the described coal mine, its antistatic explosion-proof PVC screen casing is to punch to form on antistatic explosion-proof pvc pipe tube wall, makes it have gas permeability; Drilling and forming hole finishes the back and does not carry earlier brill, to carrying antistatic explosion-proof PVC screen casing at the bottom of the hole and it being stayed in the hole, guarantees the integrality of soft projecting coal bed boring by high strength large through-hole drilling rod inside, improves gas pumping efficient.
Soft projecting coal bed middle blast air drilling equipment under the described coal mine, its inner core drill bit that comes off automatically is made up of inner core and bit body two parts, at the bottom of being transported to the hole, antistatic explosion-proof PVC screen casing carries when boring, inner core be subjected to antistatic explosion-proof PVC screen casing responsive to axial force automatically and bit body come off, open passage thus antistatic explosion-proof PVC screen casing can be stayed in the hole in putting forward the brill process smoothly.
The utility model compared with prior art, and is practical, and easy to maintenance, can satisfy the soft projecting coal bed requirement of creeping into along the coal-bed gas extraction borehole under the coal mine fully; Adopted the air compressor machine of independent air feed, its air feed pressure and air quantity are more than the twice of at present most of used mine system wind regimes, under being used of aperture control of dust dust arrester, greatly reduce the work plane dust, big latus rectum drilling rod of Cai Yonging and the automatic separation-type drill bit of inner core have strengthened conveying screen casing operability simultaneously, effectively raise the one-tenth porosity along layer hole, improve soft projecting coal bed gas control efficient greatly, ensured the mine production safety.
Description of drawings
Fig. 1 is a drill site construction schematic top plan view of the present utility model.
Fig. 2 is an aperture control of dust dust arrester schematic diagram.
Fig. 3 is the tear-away drill bit structure schematic diagram of inner core.
Fig. 4 is the cross section view for Fig. 3.
Fig. 5 is antistatic explosion-proof PVC screen construction schematic diagram.
Specific embodiment
Referring to Fig. 1, soft projecting coal bed middle blast air drilling equipment under the coal mine described in the utility model, comprise rig, air compressor machine, aperture control of dust dust arrester, high strength large through-hole drilling rod, inner core come off automatically drill bit and antistatic explosion-proof PVC screen casing, it is characterized in that: the air compressor machine air outlet directly is connected with drilling rod with high-voltage tube, provides the pressure wind regime by drill pipe bore in boring.
Referring to Fig. 2, soft projecting coal bed middle blast air drilling equipment under the described coal mine, its aperture control of dust dust arrester directly is connected with orifice tube, and borehole sealing is become a confined space, helps the unified collection and treatment of cinder in the hole; And the shower nozzle to dust arrester internal spray water smoke is set in the control of dust dust arrester of aperture, and its aperture control of dust dust arrester is in when work, by shower nozzle to dust arrester internal spray water smoke to help the dirt that disappears.
Soft projecting coal bed middle blast air drilling equipment under the described coal mine, its high strength large through-hole drilling rod internal diameter is greater than antistatic explosion-proof PVC screen casing external diameter, can satisfy the intensity needs that normally creep into, also can satisfy the space requirement of carrying antistatic explosion-proof PVC screen casing in the drilling rod.
Referring to Fig. 5, soft projecting coal bed middle blast air drilling equipment under the described coal mine, its antistatic explosion-proof PVC screen casing is to punch to form on antistatic explosion-proof pvc pipe tube wall, makes it have gas permeability; Drilling and forming hole finishes the back and does not carry earlier brill, to carrying antistatic explosion-proof PVC screen casing at the bottom of the hole and it being stayed in the hole, guarantees the integrality of soft projecting coal bed boring by high strength large through-hole drilling rod inside, improves gas pumping efficient.
Referring to Fig. 3, Fig. 4, soft projecting coal bed middle blast air drilling equipment under the described coal mine, its inner core drill bit that comes off automatically is made up of inner core and bit body two parts, at the bottom of being transported to the hole, antistatic explosion-proof PVC screen casing carries when boring, inner core be subjected to antistatic explosion-proof PVC screen casing responsive to axial force automatically and bit body come off, open passage thus antistatic explosion-proof PVC screen casing can be stayed in the hole in putting forward the brill process smoothly.
Claims (6)
1, the soft projecting coal bed middle blast air drilling equipment in down-hole, comprise rig (1), air compressor machine (2), aperture control of dust dust arrester (3), high strength large through-hole drilling rod (4), inner core come off automatically drill bit (5) and antistatic explosion-proof PVC screen casing (6), it is characterized in that: described air compressor machine (2) air outlet by high-voltage tube with in boring, provide the high strength large through-hole drilling rod (4) of pressure wind regime to be connected.
2, the soft projecting coal bed middle blast air drilling equipment in down-hole according to claim 1, it is characterized in that: described aperture control of dust dust arrester (3) is connected with orifice tube, constitutes a confined space.
3, the soft projecting coal bed middle blast air drilling equipment in down-hole according to claim 1 and 2 is characterized in that: the shower nozzle (7) to dust arrester internal spray water smoke is set in the described aperture control of dust dust arrester (3).
4, the soft projecting coal bed middle blast air drilling equipment in down-hole according to claim 3, it is characterized in that: described high strength large through-hole drilling rod (4) internal diameter is greater than antistatic explosion-proof PVC screen casing (6) external diameter.
5, the soft projecting coal bed middle blast air drilling equipment in down-hole according to claim 3, it is characterized in that: described antistatic explosion-proof PVC screen casing (6) is for being provided with the antistatic explosion-proof pvc pipe of air-vent on the tube wall.
6, down-hole according to claim 3 soft projecting coal bed in blast air drilling equipment, it is characterized in that: the described inner core drill bit (5) that comes off automatically is made up of inner core and bit body two parts, can separate with bit body when inner core is subjected to axial force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202224365U CN201334869Y (en) | 2008-11-13 | 2008-11-13 | Pressured air drilling equipment used in downhole loose and soft coal seam with potential gas outburst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202224365U CN201334869Y (en) | 2008-11-13 | 2008-11-13 | Pressured air drilling equipment used in downhole loose and soft coal seam with potential gas outburst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201334869Y true CN201334869Y (en) | 2009-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202224365U Expired - Lifetime CN201334869Y (en) | 2008-11-13 | 2008-11-13 | Pressured air drilling equipment used in downhole loose and soft coal seam with potential gas outburst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201334869Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446178B (en) * | 2008-11-13 | 2011-11-16 | 煤炭科学研究总院西安研究院 | Wind pressure air drilling equipment in downhole soft outbursting coal bed and process matched therewith |
| CN102383781A (en) * | 2011-07-15 | 2012-03-21 | 河南理工大学 | Method for measuring gas pressure of coal bed |
| CN103470186A (en) * | 2012-06-07 | 2013-12-25 | 张卫星 | Drill bit for coal-mine gas extraction hole |
| CN104533513A (en) * | 2015-01-07 | 2015-04-22 | 河南理工大学 | High-pressure abrasive material gas jet coal-breaking pressure relief and permeability improvement equipment and method |
| CN109488365A (en) * | 2018-12-17 | 2019-03-19 | 煤科集团沈阳研究院有限公司 | One kind being applied to weak seam extraction borehole retaining wall preventing clogging up device and method for sealing |
| CN113123822A (en) * | 2021-04-20 | 2021-07-16 | 焦作煤业（集团）新乡能源有限公司 | Regional coal receiving device that verifies of high mining height stope face |
-
2008
- 2008-11-13 CN CNU2008202224365U patent/CN201334869Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446178B (en) * | 2008-11-13 | 2011-11-16 | 煤炭科学研究总院西安研究院 | Wind pressure air drilling equipment in downhole soft outbursting coal bed and process matched therewith |
| CN102383781A (en) * | 2011-07-15 | 2012-03-21 | 河南理工大学 | Method for measuring gas pressure of coal bed |
| CN102383781B (en) * | 2011-07-15 | 2014-01-08 | 河南理工大学 | A method for measuring coal seam gas pressure |
| CN103470186A (en) * | 2012-06-07 | 2013-12-25 | 张卫星 | Drill bit for coal-mine gas extraction hole |
| CN103470186B (en) * | 2012-06-07 | 2016-01-06 | 张卫星 | A kind of coal mine gas drainage holes drill bit |
| CN104533513A (en) * | 2015-01-07 | 2015-04-22 | 河南理工大学 | High-pressure abrasive material gas jet coal-breaking pressure relief and permeability improvement equipment and method |
| CN109488365A (en) * | 2018-12-17 | 2019-03-19 | 煤科集团沈阳研究院有限公司 | One kind being applied to weak seam extraction borehole retaining wall preventing clogging up device and method for sealing |
| CN113123822A (en) * | 2021-04-20 | 2021-07-16 | 焦作煤业（集团）新乡能源有限公司 | Regional coal receiving device that verifies of high mining height stope face |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: XI'AN RESEARCH INSTITUTE OF CHINA COAL TECHNOLOGY Free format text: FORMER NAME: CHINA COAL TECHNOLOGY + ENGINEERING GROUP XI'AN RESEARCH INSTITUTE Owner name: CHINA COAL TECHNOLOGY + ENGINEERING GROUP XI'AN RE Free format text: FORMER NAME: SIAN BRANCH OF CHINA COAL RESEARCH INSTITUTE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 710054 No. 52, Yanta Road, Xi'an, Shaanxi Patentee after: CCTEG Xi'an Research Institute Address before: 710054 No. 52, Yanta Road, Xi'an, Shaanxi Patentee before: Xi'an Research Institute Of China Coal Research Institute Address after: 710054 No. 52, Yanta Road, Xi'an, Shaanxi Patentee after: Xi'an Research Institute Of China Coal Research Institute Address before: 710054 No. 52, Yanta Road, Xi'an, Shaanxi Patentee before: Xi'an Branch of China Coal Research Institute |
|
| CX01 | Expiry of patent term |
Granted publication date: 20091028 |
|
| CX01 | Expiry of patent term |