CN105114119A - Improved gas extraction structure adopting downward hole drainage and implementation method thereof - Google Patents
Improved gas extraction structure adopting downward hole drainage and implementation method thereof Download PDFInfo
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- CN105114119A CN105114119A CN201510516492.4A CN201510516492A CN105114119A CN 105114119 A CN105114119 A CN 105114119A CN 201510516492 A CN201510516492 A CN 201510516492A CN 105114119 A CN105114119 A CN 105114119A
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- hole
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- gas pumping
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Abstract
The invention discloses an improved gas extraction structure adopting downward hole drainage and an implementation method thereof. The improved gas extraction structure comprises a hole-inside structure (A); the hole-inside structure (A) is communicated with a hole-outside drainage device (B) through hole-inside and hole-outside connecting parts (10); the improved gas extraction structure is characterized in that the hole-inside structure (A) comprises a gas collection chamber (1) and an extraction pipe (8) which are communicated with each other; the gas collection chamber (1) is positioned at the front end of the hole-inside structure (A); the extraction pipe (8) sequentially passes through a Marithan cotton yarn blocking section (4) and a grouting blocking section (6) from one end of the gas collection chamber (1) to be fixed; a drainage pipe (7) is arranged in the extraction pipe (8); the hole-outside drainage device (B) comprises an extraction pipe connection pipe (11) communicated with the extraction pipe (8); the hole-outside length of the drainage pipe (7) is the same as the length of the extraction pipe connection pipe (11); a drainage outlet screw (16) and a drainage outlet nut (17) are arranged at the outer end opening of the drainage pipe (7); and a side surface opening of the extraction pipe connection pipe (11) is communicated with a gas extraction outlet (13) and a compressed air inlet as well as a side flowing hole (14).
Description
Technical field
The present invention relates to bow hole draining of one and improve gas pumping structure and implementation method thereof, belong to collection field, colliery.
Background technology
Current underground gas extraction boring angularly classification has: just spend hole, negative degree hole and flat hole.Negative degree Ye Jiaofu hole, hole, due to condition of coal seam occurrence more complicated, there are inclined seam and horizontal seam, coal mine gas disaster is serious, gas, as a kind of clean energy resource, has very high value, and gas pumping can not only reduce Gas Disaster degree, and can clean energy resource be exploited, thus generally used.Along with social development, demand for energy constantly increases, the increasing of coal mining depth extension and mining rate, and mine gas disaster is more and more serious, and coal mine gas outburst amount constantly increases, and gas pumping is more aobvious important.But due to descending boring of constructing of having to when being limited in taking out coal gas in advance by execution conditions, construction technology, affect by hydrogeology and the natural cause such as coal seam moisture content in lower perform hole work progress, often accumulate a large amount of water and cinder in hole and not easily discharge.And then the crack passage of Gas Flow in obstruction coal seam, increase gas pumping resistance, and in weak seam, in boring, ponding soaks hole wall coal body for a long time boring also may be caused to step on hole, Gas Flow passage is blocked, and therefore borehole failure, gas pumping effect also can be had a strong impact on.
Summary of the invention
The technical problem to be solved in the present invention is: provide bow hole draining of one to improve gas pumping structure and implementation method thereof, existingly bows in the gas pumping process of hole, because hole internal water accumulation affects the problem of gas pumping effect to solve.
Technical scheme of the present invention is: bow hole draining of one improves gas pumping structure, it comprises in hole inner structure (A) passing hole and being communicated with dewatering installation outside hole (B) with hole outer connection part, hole inner structure (A) comprises collection chamber and is communicated with drainage tube, collection chamber is positioned at hole inner structure (A) front end, and drainage tube is outwards fixed by Ma Lisan cotton yarn block section and slip casting block section successively from collection chamber one end; Gutter is arranged in drainage tube; Outside hole, dewatering installation (B) comprises drainage tube tube connector and is communicated with drainage tube, and the outer length of drain tube holes is identical with drainage tube tube connector length, and gutter external port arranges drainage outlet screw drainage outlet nut; Drainage tube tube connector lateral opening exports with gas pumping and presses wind entrance and orifice to communicate.
Gas pumping outlet arranges valve.
Pressure wind entrance and orifice are communicated with pressure ventilation pipe.
Drainage tube front end 1-3m is drainage tube sieve aperture section, and drainage tube sieve aperture section makes a call to a diameter 10mm aperture every 50mm.
Gutter front end 1-3m is gutter sieve aperture section, and gutter sieve aperture section makes a call to a diameter 10mm aperture every 50mm.
Drainage tube diameter is less than boring aperture, and gutter length is greater than drilling depth, diameter 16mm common PVC pipe, and gutter connector is diameter 20mm generic connectivity flexible pipe.
Pressure wind entrance and orifice aperture are 10mm, and pressure ventilation pipe aperture is 10mm, and drainage outlet screw diameter is 16mm, and drainage outlet nut diameter is 16mm.
Hole draining of bowing improves an implementation method for gas pumping structure, comprises following steps:
Step one: processing an aperture at 1-3m place, drainage tube front end every 5cm is that the aperture of 1cm is as sieve aperture section;
Step 2: Ma Lisan is tied up on drainage tube at sieve aperture Duan Houxian, then Ma Lisan is wrapped on drainage tube by spiral wrap cotton yarn, form Ma Lisan cotton yarn block section, then stop valve on Ma Lisan bag is taken off, two parts inside it are mixed, in feeding hole, after Ma Lisan is expanded, inject cement mortar, form slip casting block section; Gutter leading portion 1-2m is made a call to a 1cm keyhole formation gutter sieve aperture section every 5cm, and gutter is inserted foot of hole by drainage tube, form hole inner structure (A).
Step 3: part (B) outside hole to be inserted in drainage tube and to be wound around with iron wire, forming hole inner structure (A) and hole external structure (B) connected component;
Step 4: valve-off, air-hose one end is connected pressure wind entrance and flow measurement entrance other end connection air line, open drainage outlet screw, open pressure wind, make distinguished and admirable along with wind direction access aperture inner structure (A), and by blast, water is discharged outside sky by this structure along water (flow) direction by hole internal water accumulation;
Step 5: after water is discharged in hole, by first-class for drainage outlet screw and keep air tight, close pressure wind entrance and also keeps air tight, open valve and drainage tube outlet be connected with extraction pipeline, carry out gas pumping;
Step 6: during secondary drainage, repeats step 4 and step 5.
Beneficial effect of the present invention: the present invention's design will use the shutoff of Ma Lisan cotton yarn in hole, form bore end collection chamber, ensure that collection chamber normally collects gas, outside hole, utilize the draining of pressure wind, hole internal water accumulation is discharged, add Gas Flow passage, reduce Gas Flow resistance, improve gas pumping efficiency, reduce gas pumping cost, mine realizes safety in production, realizes clean energy resource high-efficiency mining and utilization, reduces environment pollution.
Accompanying drawing explanation
Fig. 1 is project organization generalized section of the present invention.
Detailed description of the invention
As shown in Figure 1, bow hole draining of one improves gas pumping structure, it comprises in hole inner structure (A) passing hole and being communicated with dewatering installation outside hole (B) with hole outer connection part 10, hole inner structure (A) comprises collection chamber 1 and is communicated with drainage tube 8, collection chamber 1 is positioned at hole inner structure (A) front end, and drainage tube 8 is outwards fixed by Ma Lisan cotton yarn block section 4 and slip casting block section 6 successively from collection chamber 1 one end; Gutter 7 is arranged in drainage tube 8; Outside hole, dewatering installation (B) comprises drainage tube tube connector 11 and is communicated with drainage tube 8, and outside gutter 7 hole, length is identical with drainage tube tube connector 11 length, and gutter 7 external port arranges drainage outlet screw 16 drainage outlet nut 17; Drainage tube tube connector 11 lateral opening and gas pumping export 13 and press wind entrance and orifice 14 to communicate.Gas pumping outlet 13 arranges valve 12.Pressure wind entrance and orifice 14 are communicated with pressure ventilation pipe 15.Drainage tube 8 front end 1-3m is drainage tube sieve aperture section 3, and drainage tube sieve aperture section 3 makes a call to a diameter 10mm aperture every 50mm.Gutter 7 front end 1-3m is gutter sieve aperture section 2, and gutter sieve aperture section 2 makes a call to a diameter 10mm aperture every 50mm.
Drainage tube 8 diameter is less than boring aperture, and gutter 7 length is greater than drilling depth, diameter 16mm common PVC pipe, and gutter connector 9 is diameter 20mm generic connectivity flexible pipe.Pressure wind entrance and orifice 14 aperture are 10mm, and pressure ventilation pipe 15 aperture is 10mm, and drainage outlet screw 16 diameter is 16mm, and drainage outlet nut 17 diameter is 16mm.
Hole draining of bowing improves an implementation method for gas pumping structure, comprises following steps:
Step one: processing an aperture at 1-3m place, drainage tube 8 front end every 5cm is that the aperture of 1cm is as sieve aperture section 3;
Step 2: first Ma Lisan is tied up on drainage tube 8 after sieve aperture section 3, then Ma Lisan is wrapped on drainage tube 8 by spiral wrap cotton yarn, form Ma Lisan cotton yarn block section 4, then stop valve on Ma Lisan bag is taken off, two parts inside it are mixed, in feeding hole, after Ma Lisan is expanded, inject cement mortar, form slip casting block section 6.Gutter 7 leading portion 1-2m is made a call to a 1cm keyhole formation gutter sieve aperture section 2 every 5cm, and gutter 7 is inserted foot of hole by drainage tube 8, form hole inner structure (A).
Step 3: part (B) outside hole to be inserted in drainage tube 8 and to be wound around with iron wire, forming hole inner structure (A) and hole external structure (B) connected component 10;
Step 4: valve-off 12, air-hose 15 one end is connected pressure wind entrance and flow measurement entrance 14 other end connection air line, open drainage outlet screw 16, open pressure wind, make distinguished and admirable along with wind direction 18 access aperture inner structure (A), and by blast, water is discharged outside sky by this structure along water (flow) direction 19 by hole internal water accumulation;
Step 5: after water is discharged in hole, by first-class for drainage outlet screw 16 and keep air tight, close pressure wind entrance 14 and also keeps air tight, open valve 12 and drainage tube outlet 13 be connected with extraction pipeline, carry out gas pumping.
Step 6: during secondary drainage, repeats step 4 and step 5.
Claims (6)
1. a hole draining of bowing improves gas pumping structure, it comprises in hole inner structure (A) passing hole and being communicated with dewatering installation outside hole (B) with hole outer connection part (10), it is characterized in that: hole inner structure (A) comprises collection chamber (1) and is communicated with drainage tube (8), collection chamber (1) is positioned at hole inner structure (A) front end, and drainage tube (8) is outwards fixed by Ma Lisan cotton yarn block section (4) and slip casting block section (6) successively from collection chamber (1) one end; Gutter (7) is arranged in drainage tube (8); Outside hole, dewatering installation (B) comprises drainage tube tube connector (11) and is communicated with drainage tube (8), outside gutter (7) hole, length is identical with drainage tube tube connector (11) length, and gutter (7) external port arranges drainage outlet screw (16) drainage outlet nut (17); Drainage tube tube connector (11) lateral opening exports (13) and presses wind entrance and orifice (14) to communicate with gas pumping.
2. bow hole draining of one according to claim 1 improves gas pumping structure, it is characterized in that: gas pumping outlet (13) arranges valve (12).
3. bow hole draining of one according to claim 1 improves gas pumping structure, it is characterized in that: pressure wind entrance and orifice (14) are communicated with pressure ventilation pipe (15).
4. bow hole draining of one according to claim 1 improves gas pumping structure, and it is characterized in that: drainage tube (8) front end 1-3m is drainage tube sieve aperture section (3), drainage tube sieve aperture section (3) makes a call to a diameter 10mm aperture every 50mm.
5. bow hole draining of one according to claim 1 improves gas pumping structure, and it is characterized in that: gutter (7) front end 1-3m is gutter sieve aperture section (2), gutter sieve aperture section (2) makes a call to a diameter 10mm aperture every 50mm.
6. a kind of hole draining of bowing as described in one of claim 1-5 improves the implementation method of gas pumping structure, it is characterized in that: comprise following steps:
Step one: processing an aperture at 1-3m place, drainage tube (8) front end every 5cm is that the aperture of 1cm is as sieve aperture section (3);
Step 2: first Ma Lisan is tied up on drainage tube (8) after sieve aperture section (3), then Ma Lisan is wrapped on drainage tube (8) by spiral wrap cotton yarn, form Ma Lisan cotton yarn block section (4), then stop valve on Ma Lisan bag is taken off, two parts inside it are mixed, in feeding hole, after Ma Lisan is expanded, inject cement mortar, form slip casting block section (6); Gutter (7) leading portion 1-2m is made a call to 1cm keyhole formation gutter sieve aperture section (2) every 5cm, and gutter (7) is inserted foot of hole by drainage tube (8), form hole inner structure (A);
Step 3: part (B) outside hole to be inserted in drainage tube (8) and to be wound around with iron wire, forming hole inner structure (A) and hole external structure (B) connected component (10);
Step 4: valve-off (12), air-hose (15) one end is connected pressure wind entrance and flow measurement entrance (14) other end connection air line, open drainage outlet screw (16), open pressure wind, make distinguished and admirable along with wind direction (18) access aperture inner structure (A), and by blast, water is discharged outside sky by this structure along water (flow) direction (19) by hole internal water accumulation;
Step 5: after water is discharged in hole, by first-class for drainage outlet screw (16) and keep air tight, close pressure wind entrance (14) and keep air tight, opening valve (12) and drainage tube outlet (13) is connected with extraction pipeline, carry out gas pumping;
Step 6: during secondary drainage, repeats step 4 and step 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510516492.4A CN105114119A (en) | 2015-08-21 | 2015-08-21 | Improved gas extraction structure adopting downward hole drainage and implementation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510516492.4A CN105114119A (en) | 2015-08-21 | 2015-08-21 | Improved gas extraction structure adopting downward hole drainage and implementation method thereof |
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| CN105114119A true CN105114119A (en) | 2015-12-02 |
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| CN201510516492.4A Pending CN105114119A (en) | 2015-08-21 | 2015-08-21 | Improved gas extraction structure adopting downward hole drainage and implementation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401915A (en) * | 2015-12-30 | 2016-03-16 | 贵州盘江精煤股份有限公司 | Downlink borehole drainage method and device |
| CN105888723A (en) * | 2016-06-24 | 2016-08-24 | 安徽理工大学 | Drainage device and method for gas pressure measurement in downward cross hole drilling |
| CN107882585A (en) * | 2017-11-06 | 2018-04-06 | 贵州五轮山煤业有限公司 | To drilling integrate draining gas pumping integrated apparatus under one kind |
| CN110374673A (en) * | 2019-06-11 | 2019-10-25 | 平顶山天安煤业股份有限公司八矿 | A kind of suction road downlink layer-through drilling is calmed the anger drainage and hole sealing method |
| CN111608723A (en) * | 2020-06-09 | 2020-09-01 | 四川川煤华荣能源股份有限公司 | Drainage method for gas extraction hole |
| CN112682100A (en) * | 2020-12-31 | 2021-04-20 | 煤炭科学技术研究院有限公司 | Coal seam is taken out down and is taken out swift drainage device of drilling |
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| CN203145996U (en) * | 2013-02-28 | 2013-08-21 | 山西潞安环保能源开发股份有限公司 | Downward wet hole drainage |
| CN103557030A (en) * | 2013-10-25 | 2014-02-05 | 河南理工大学 | Downward drilling hole draining device |
| CN204899969U (en) * | 2015-08-21 | 2015-12-23 | 贵州大学 | Hole drainage of bowing improves gas drainage structure |
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2015
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| CN203145996U (en) * | 2013-02-28 | 2013-08-21 | 山西潞安环保能源开发股份有限公司 | Downward wet hole drainage |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401915A (en) * | 2015-12-30 | 2016-03-16 | 贵州盘江精煤股份有限公司 | Downlink borehole drainage method and device |
| CN105401915B (en) * | 2015-12-30 | 2019-03-01 | 贵州盘江精煤股份有限公司 | A kind of downlink drilling water discharge method and device |
| CN105888723A (en) * | 2016-06-24 | 2016-08-24 | 安徽理工大学 | Drainage device and method for gas pressure measurement in downward cross hole drilling |
| CN107882585A (en) * | 2017-11-06 | 2018-04-06 | 贵州五轮山煤业有限公司 | To drilling integrate draining gas pumping integrated apparatus under one kind |
| CN110374673A (en) * | 2019-06-11 | 2019-10-25 | 平顶山天安煤业股份有限公司八矿 | A kind of suction road downlink layer-through drilling is calmed the anger drainage and hole sealing method |
| CN111608723A (en) * | 2020-06-09 | 2020-09-01 | 四川川煤华荣能源股份有限公司 | Drainage method for gas extraction hole |
| CN111608723B (en) * | 2020-06-09 | 2021-08-24 | 四川川煤华荣能源股份有限公司 | Drainage method for gas extraction hole |
| CN112682100A (en) * | 2020-12-31 | 2021-04-20 | 煤炭科学技术研究院有限公司 | Coal seam is taken out down and is taken out swift drainage device of drilling |
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Application publication date: 20151202 |
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