CN103939128B - Gas pumping pipe bit delivery method - Google Patents
Gas pumping pipe bit delivery method Download PDFInfo
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- CN103939128B CN103939128B CN201410141905.0A CN201410141905A CN103939128B CN 103939128 B CN103939128 B CN 103939128B CN 201410141905 A CN201410141905 A CN 201410141905A CN 103939128 B CN103939128 B CN 103939128B
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- pvc
- drilling rod
- drill bit
- boring
- gas
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Abstract
The invention discloses a kind of gas pumping pipe bit delivery method, utilize hollow PVC drilling rod to carry PVC drill bit to the boring of depths, coal seam, then sealing pores is carried out to PVC drilling rod; Finally the end seal of PVC drilling rod is connected on air extractor, carries out gas drainage under suction work.The present invention utilizes PVC drilling rod and PVC drill bit as disposable boring bar tool, has gas drainage under suction function concurrently, simplifies gas drainage under suction operation, can avoid the collapse hole phenomenon forming boring because moving back drill-through journey.Even if the collapse hole because of boring procedure once in a while, the drilling rod of PVC material and drill bit can not form obstacle to exploitation, thus do not affect mining progress.Visible, the present invention is easy and simple to handle, efficiency is high, effective, can cost of winning be reduced, not affect mining progress, very be beneficial to promotion and implementation.
Description
Technical field
The present invention relates to the gas drainage technique in field, colliery, be specifically related to a kind of gas pumping pipe bit delivery method.
Background technology
Long-term buried underground, coal seam, its internal pressure is comparatively large, and the coal bed gas (gas) constantly produced is compressed in coal seam and is in stable state, but in working seam process, destroy the balance in coal seam, the high pressure gas gas be stored in coal seam unexpected outburst can out cause outstanding accident.Gas Outburst is a kind of serious disaster of underground coal mine, the safety in production in restriction colliery.On the other hand, because coal bed gas is partially sealed, be not easy under normal circumstances to be excluded, according to the stages of mining of specification, need before exploitation first to coal bed drilling with draw out methane.All the time, coal bed drilling all adopts the operation of metal drilling tool, pulls out drilling tool after boring, inserts releasing pipe and sealing of hole, utilizes extractor fan to carry out extraction, thus the coal bed gas (gas) of discharge depths, coal seam.Bit freezing and collapse hole problem can be run in reality boring and gas pumping process.Because drilling tool gos deep in coal seam, drilling rod lengthens piecemeal and can go deep into coal seam more than 60m, that so gos deep into coal seam creeps into work, once generation collapse hole, pipe becoming stuck enters depths, coal seam and cannot take out, metal drill pipe can not take out the normal work that can affect mining machines in time, thus affects carrying out smoothly of exploitation work, and process bothers very much.In addition, exiting in drilling rod process, more easily there is collapse hole phenomenon.Even if taken out smoothly by drilling rod, only local collapse hole also can affect the installation of gas drainage pipe, and boring is scrapped.Containing in the coal seam of coal bed gas, above two kinds of collapse holes are common phenomenons.Not only operating process is slowly complicated, and less effective, also can affect overall exploitation rate.
Summary of the invention
The object of the invention is for Problems existing and deficiency in existing gas discharge in mine technique, a kind of gas pumping pipe bit delivery method effectively can taken into account boring and bleed is provided.
For achieving the above object, adopt following technical scheme: a kind of gas pumping pipe bit delivery method, the drill bit utilizing the drilling rod of hollow PVC material to carry PVC material is holed to depths, coal seam as disposable drilling tool, and PVC drilling rod can be extended, till piercing correct position by sealing docking piecemeal; Again sealing pores is carried out to PVC drilling rod, make it seal and be fixed in boring; Finally the end seal of PVC drilling rod is connected on air extractor, using PVC drilling rod as gas drainage pipeline, carries out gas drainage under suction work.
On described PVC drill bit, embed metal blade at drill lip position and form composite drill bit.The mode of setting-in can have multiple, and such as: be provided with fin at the root of metal blade, PVC drill bit pedestal arranges the groove of coupling, fin is flush-mounted in after in groove and forms complex by heat seal process.
Aspirating hole can also be set in described PVC drilling rod side.
Beneficial effect: the present invention utilizes PVC drilling rod and PVC drill bit as disposable boring bar tool, directly stays in boring, as gas drainage pipe after drilling rod and bit operation.Because the seam hardness in coal mining field is limited, be enough to the working strength of bearing coal bed drilling as the PVC drilling rod of disposable drilling tool and drill bit.
Be positioned at the aspirating hole on PVC drilling rod, carry out blowing or bleeding when being not only conducive to boring, be more conducive to the air inlet port as gas drainage under suction.
Drilling rod as gas drainage pipe, is simplified gas drainage under suction operation by the present invention, directly can draw out methane to after drilling rod sealing pores.The collapse hole phenomenon forming boring because moving back drill-through journey can be avoided.Even if the collapse hole because of boring procedure once in a while, the drilling rod of PVC material and drill bit can not form obstacle to exploitation, thus do not affect mining progress.Visible, the present invention is easy and simple to handle, efficiency is high, effective, can cost of winning be reduced, not affect mining progress, very be beneficial to promotion and implementation.
Detailed description of the invention
Embodiment 1: a kind of gas pumping pipe bit delivery method, utilizes the drilling rod of PVC material and the drill bit of PVC material to replace metal drill pipe and drill bit.Hollow PVC drilling rod is carried PVC drill bit hole to depths, coal seam.When boring reaches target location (such as 60m), then sealing pores is carried out to PVC drilling rod, hollow PVC drilling rod is used as gas drainage pipe.Then the end seal of PVC drilling rod is connected on air extractor, carries out gas drainage under suction work.Wherein, described PVC drilling rod can, piecemeal by sealing docking, make it constantly to be extended, till piercing correct position.In the present embodiment, select PVC drill bit hardness to make itself and institute's working seam hardness reach optimum value, make the PVC drilling rod of disposable drilling tool and drill bit be enough to bear the working strength requirement of coal bed drilling.
In order to reach the effect that draws out methane preferably, aspirating hole can also be set in described PVC drilling rod side.This aspirating hole carries out blowing or bleeding when being not only conducive to boring, is more conducive to the air inlet port as gas drainage under suction.
Embodiment 2: on embodiment 1 method basis, improves described PVC drill bit, namely embeds metal blade at drill lip position and forms composite drill bit.Such as can be provided with fin at the root of metal blade, and arrange the groove of coupling on drill bit pedestal, fin is flush-mounted in after in groove and forms complex by heat seal process.
Claims (2)
1. a gas pumping pipe bit delivery method, is characterized in that: the drill bit utilizing the drilling rod of hollow PVC material to carry PVC material is holed to depths, coal seam as disposable drilling tool, and PVC drilling rod can be extended, till piercing correct position by sealing docking piecemeal; Again sealing pores is carried out to PVC drilling rod, make it seal and be fixed in boring; In described PVC drilling rod side, aspirating hole is set; Finally the end seal of PVC drilling rod is connected on air extractor, using PVC drilling rod as gas drainage pipeline, carries out gas drainage under suction work.
2. gas pumping pipe bit delivery method according to claim 1, it is characterized in that: in the drill lip position of PVC drilling tool, steel edge is set, the root of this metal blade is provided with fin, the pedestal of PVC drill bit arranges the groove of coupling, and fin is flush-mounted in after in groove and forms complex by heat seal process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410141905.0A CN103939128B (en) | 2014-04-10 | 2014-04-10 | Gas pumping pipe bit delivery method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410141905.0A CN103939128B (en) | 2014-04-10 | 2014-04-10 | Gas pumping pipe bit delivery method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103939128A CN103939128A (en) | 2014-07-23 |
| CN103939128B true CN103939128B (en) | 2016-03-16 |
Family
ID=51186974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410141905.0A Expired - Fee Related CN103939128B (en) | 2014-04-10 | 2014-04-10 | Gas pumping pipe bit delivery method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103939128B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089193A (en) * | 2016-07-05 | 2016-11-09 | 高琴 | Gas hydrates exploitation seabed rock deformation analogue experiment installation and experimental technique |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4321967A (en) * | 1979-07-21 | 1982-03-30 | Maschinenfabrik Korfmann Gmbh | Suction of gases from boreholes in coal mining |
| CN2893155Y (en) * | 2006-04-07 | 2007-04-25 | 李寿山 | Plastic pipe for drawing-off gas |
| CN102116171A (en) * | 2011-04-09 | 2011-07-06 | 中铁十七局集团第五工程有限公司 | Method for rapid discharge of gas in tunnel |
| CN202483612U (en) * | 2012-03-13 | 2012-10-10 | 中国平煤神马能源化工集团有限责任公司天成实业分公司 | Polyvinyl chloride gas-drainage pipe for underground coal mine |
| CN203022681U (en) * | 2013-01-17 | 2013-06-26 | 贵州盘江精煤股份有限公司 | Drilling and hole sealing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7086808B2 (en) * | 2001-12-20 | 2006-08-08 | Earth Tool Company, L.L.C. | Method and apparatus for on-grade boring |
-
2014
- 2014-04-10 CN CN201410141905.0A patent/CN103939128B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4321967A (en) * | 1979-07-21 | 1982-03-30 | Maschinenfabrik Korfmann Gmbh | Suction of gases from boreholes in coal mining |
| CN2893155Y (en) * | 2006-04-07 | 2007-04-25 | 李寿山 | Plastic pipe for drawing-off gas |
| CN102116171A (en) * | 2011-04-09 | 2011-07-06 | 中铁十七局集团第五工程有限公司 | Method for rapid discharge of gas in tunnel |
| CN202483612U (en) * | 2012-03-13 | 2012-10-10 | 中国平煤神马能源化工集团有限责任公司天成实业分公司 | Polyvinyl chloride gas-drainage pipe for underground coal mine |
| CN203022681U (en) * | 2013-01-17 | 2013-06-26 | 贵州盘江精煤股份有限公司 | Drilling and hole sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103939128A (en) | 2014-07-23 |
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| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20160316 Termination date: 20210410 |