CN101864895A - Positive-circulation drilling and dedusting technique of chamber down-hole hammer and double-wall pipe - Google Patents
Positive-circulation drilling and dedusting technique of chamber down-hole hammer and double-wall pipe Download PDFInfo
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- CN101864895A CN101864895A CN201010192402A CN201010192402A CN101864895A CN 101864895 A CN101864895 A CN 101864895A CN 201010192402 A CN201010192402 A CN 201010192402A CN 201010192402 A CN201010192402 A CN 201010192402A CN 101864895 A CN101864895 A CN 101864895A
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Abstract
The invention relates to a positive-circulation drilling and dedusting technique of a chamber down-hole hammer and a double-wall pipe, which is specially used for a positive-circulation drilling and dedusting method of combination of an ordinary down-hole hammer and a double-wall pipe. The dedusting portion is realized by three parts, i.e. a water delivering box, a double-wall pipe and a water injection conversion joint. Compared with other chamber injected hole drilling dedusting methods, the dedusting method has simple and reliable structure and favorable dedusting efficiency and does not affect the impact drilling efficiency of ordinary down-hole hammers. When the hammer head of the down-hole hammer is drilled, water with a certain pressure is fed to an annular gap of the double-wall pipe through a water box; water enters in the water injection conversion joint through the annular gap; pressure water is sprayed from holes circumferentially arranged on the water injection conversion joint to form a water spray area; waste gas carries rock powder to mix in the water spray area; and the formed multiphase flow of water, gas and rock slag is discharged outside through the annular gap between the double-wall pipe and the hole wall to realize positive-circulation drilling wet-type dedusting of ordinary down-hole hammers.
Description
Technical field
What the present invention relates to is a kind of positive-circulation drilling and dedusting technique of chamber down-hole hammer and double-wall pipe, utilizes this kind technology can be issued to the effect of dedusting in the hole in the situation that does not influence rock penetration performance.Can be applied in the cavern injected hole construction, geological drilling, mining reduce or eliminate in the drilling process dust to harm healthy, machine performance.
Background technology
Down-the-hole hammer traditional handicraft method is that direct circulation is crept into, and when creeping into, the air-flow of discharging in the hole is carrying the slag bits by the aperture ejection, and dust fills the air, and the harm workman is healthy, pollutes construction environment, influences the application life of machine.So the selection of dust collection method is particularly important.
The dedusting technology method of pneumatic down-hole hammer drilling process generally has following several at present:
1. hollow hammer hole reverse circulation drilling center collection slag dedusting
Anti-circulation hollow-through air dth hammer creeps into, and center collection slag has increased cleaner through cleaner (falling case etc. as cyclone dust collectors, dirt) dedusting, has also increased construction cost accordingly; The through-hole diameter of hollow hammer hole piston center design is bigger, and the piston wall attenuation makes the ballistic work of down-the-hole hammer and energy transfer efficiency descend, and creeps into timeliness and descends obviously.High-frequency percussion easily causes the piston fracture in addition, the accident of creeping into occurs.
2. direct circulation down-the-hole hammer drill hole foam dust-removing
Compressed air and press water (containing foaming agent) mix outside the hole, introduce in the hole, drive the down-the-hole hammer.Need to add sliding agent, foaming agent in the general water, increased construction cost; The foaming agent of injecting compressed air obviously makes the rock drilling timeliness of down-the-hole hammer descend.
3. aperture impactor rock drilling wet dust removal
At present, jumbo generally adopts impactor wet drilling technology both at home and abroad, utilizes the impactor combustion gas to mix with water, by drill steel (individual layer drilling rod) water and waste gas is imported drill bit, reaches the purpose of cooling drill bit, deslagging dedusting.When the hole depth increase, energy transfer efficiency obviously descends, and influences cutting rate, is applicable to that shallow bore hole creeps into.
4. the dirt dedusting is caught in the aperture
For downward boring, adopt the aperture grit arrestor to catch dirt and combine dedusting with cleaner (falling case etc.) as cyclone dust collectors, dirt, also be a dedusting technology commonly used.In the construction of cavern's injected hole, need in the 360 ° of scopes in cavern, implement bore operation, the aperture grit arrestor is difficult for installing at the top.
Summary of the invention
The present invention by gyrator (top-drive or rotating disk), send water box, double-wall pipe, water spray conversion joint, common down-the-hole hammer, drill bit to form.Send the water box to link to each other with gyrator with bolt, can also can design above gyrator according to the gyrator structures characteristics below gyrator, water spray conversion joint connects common down-the-hole hammer and double-wall pipe.Compressed air is sent to the down-the-hole hammer through the double-wall pipe central passage, drives downhole hammer rock.The waste gas of discharging is discharged through the drill bit steam vent, at the bottom of the flushing hole, and the cooling drill bit, cutting carring is along returning on the annular gap between hole wall and the down-the-hole hammer.
The water of certain pressure is sent water into the interior pipe of both arms pipe and the annular gap between the outer tube by sending the water box, water is delivered in the water spray conversion joint that connects down-the-hole hammer and both arms pipe, water spray conversion joint is welded together by joint 6 and joint 7, joint 6 uses taper thread to be connected with the double-wall pipe outer tube, one end of joint 7 uses taper thread to be connected with down-the-hole hammer back joint, pipe is pegged graft in the other end and the double-wall pipe, simultaneously in order to prevent that Compressed Gas from entering the double-wall pipe annular gap, the water that prevents certain pressure again enters the double-wall pipe central passage, additional encryption seal on double-wall pipe guarantees the reliability that seals; The aperture that many water sprays are arranged on the joint 6, the aperture circumferential array is on joint 6, and diameter is no more than 2-4mm; Can form the water smoke district of intersection, waste gas carries rock dust to be mixed in the water smoke district, outside the annular gap tap of the multiphase flow of the water of formation, gas and rock slag between double-wall pipe and hole wall.Realize common down-the-hole hammer direct circulation rock drilling wet dust removal, rock penetration performance is not subjected to the restriction of hole depth.
Description of drawings
The schematic diagram of Fig. 1 down-the-hole hammer double-wall pipe direct circulation drilling system
The spray water structure chart of conversion joint of Fig. 2
The specific embodiment
The design has following a few part to constitute:
During work, compressed air is transferred to down-the-hole hammer (8) through double-wall pipe central passage (5), makes gas driven piston move back and forth drill hammer (9) rock drilling; The waste gas of discharging is discharged through drill bit (9) steam vent, at the bottom of the flushing hole, cooling drill bit (9), cutting carring is along returning on the gap between hole wall and the down-the-hole hammer (8), run into the annular gap (4) through water box (2), double-wall pipe (3), the water smoke district of conversion joint (6) (7) ejection, waste gas carries rock dust to be mixed in the water smoke district, outside the annular gap tap of the multiphase flow of the water of formation, gas and rock slag between double-wall pipe and hole wall, realizes common down-the-hole hammer direct circulation rock drilling wet dust removal.
Claims (2)
1. positive-circulation drilling and dedusting technique of chamber down-hole hammer and double-wall pipe, when it is characterized in that work, when gyrator 1 (top-drive or rotating disk) drove the 3 direct circulation rotary drillings of down-the-hole hammer double-wall pipe, the common down-the-hole of compressed air-driven was hammered 9 rock drilling of 8 drill hammers into shape; The waste gas cutting carring of discharging directly runs into the water smoke district along returning on the gap between hole wall and the down-the-hole hammer 8, carries out wet drilling dedusting in the hole.
2. dedusting technology according to claim 1, the water that it is characterized in that certain pressure is sent water into the interior pipe 5 of both arms pipe and the annular gap 4 between the outer tube by sending water box 2, enter in the water spray conversion joint of forming by joint 6 and joint 7 by annular gap 4, joint 6 uses taper thread to be connected with double-wall pipe 3 outer tubes, one end of joint 7 uses taper thread to be connected with down-the-hole hammer 8 back joints, pipe is pegged graft in the other end and the double-wall pipe 3, in order to prevent that Compressed Gas from entering double-wall pipe annular gap 4, prevent that simultaneously the water of certain pressure from entering the interior pipe 5 of double-wall pipe, additional encryption seal 10 on double-wall pipe guarantees the reliability that seals; The aperture 11 that many water sprays are arranged on the joint 6, aperture 11 circumferential array are on joint 6, and diameter is no more than 2-4mm; Can form the water smoke district of intersection, waste gas carries rock dust to be mixed in the water smoke district, outside the annular gap tap of the multiphase flow of the water of formation, gas and rock slag between double-wall pipe 3 and hole wall.Realize common down-the-hole hammer direct circulation rock drilling wet dust removal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010192402A CN101864895A (en) | 2010-06-04 | 2010-06-04 | Positive-circulation drilling and dedusting technique of chamber down-hole hammer and double-wall pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010192402A CN101864895A (en) | 2010-06-04 | 2010-06-04 | Positive-circulation drilling and dedusting technique of chamber down-hole hammer and double-wall pipe |
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| CN101864895A true CN101864895A (en) | 2010-10-20 |
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| CN201010192402A Pending CN101864895A (en) | 2010-06-04 | 2010-06-04 | Positive-circulation drilling and dedusting technique of chamber down-hole hammer and double-wall pipe |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832082A (en) * | 2015-02-26 | 2015-08-12 | 徐州徐工基础工程机械有限公司 | Pneumatic DTH hammer reverse circulation slagging construction process for rotary drilling rig |
| CN104989287A (en) * | 2014-12-02 | 2015-10-21 | 成都宸鸿科技有限公司 | Multipurpose drill pipe |
| CN107165572A (en) * | 2017-07-18 | 2017-09-15 | 河北省地矿局国土资源勘查中心 | Matched drilling tool for implementing reverse circulation drilling by using positive circulation down-the-hole hammer and drilling method |
| CN111577177A (en) * | 2020-04-22 | 2020-08-25 | 中煤科工集团西安研究院有限公司 | Drilling device and drilling method for discharging slag by underground pneumatic impact crushed rock foam |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2066480U (en) * | 1990-06-21 | 1990-11-28 | 长春地质学院 | Wet type sealing inverse circulation pneumatic down-hole hammer |
| CN2084977U (en) * | 1991-02-01 | 1991-09-18 | 河北煤田地质勘探公司 | Dual-wall drill rod for anti-circulation drilling of pneumatic hidden-hole hammer |
| US6454026B1 (en) * | 2000-09-08 | 2002-09-24 | Sandvik Ab | Percussive down-the-hole hammer for rock drilling, a top sub used therein and a method for adjusting air pressure |
| CN201090135Y (en) * | 2007-10-29 | 2008-07-23 | 广州市地平线岩土工程有限公司 | Combined drilling tool |
| CN201396076Y (en) * | 2009-05-17 | 2010-02-03 | 辽宁有色一○一勘测工程公司 | Pneumatic backcycling drill tool for fixing hole |
| CN201437688U (en) * | 2009-05-27 | 2010-04-14 | 中国建筑科学研究院 | Spray dust removal device for point detecting equipment |
-
2010
- 2010-06-04 CN CN201010192402A patent/CN101864895A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2066480U (en) * | 1990-06-21 | 1990-11-28 | 长春地质学院 | Wet type sealing inverse circulation pneumatic down-hole hammer |
| CN2084977U (en) * | 1991-02-01 | 1991-09-18 | 河北煤田地质勘探公司 | Dual-wall drill rod for anti-circulation drilling of pneumatic hidden-hole hammer |
| US6454026B1 (en) * | 2000-09-08 | 2002-09-24 | Sandvik Ab | Percussive down-the-hole hammer for rock drilling, a top sub used therein and a method for adjusting air pressure |
| CN201090135Y (en) * | 2007-10-29 | 2008-07-23 | 广州市地平线岩土工程有限公司 | Combined drilling tool |
| CN201396076Y (en) * | 2009-05-17 | 2010-02-03 | 辽宁有色一○一勘测工程公司 | Pneumatic backcycling drill tool for fixing hole |
| CN201437688U (en) * | 2009-05-27 | 2010-04-14 | 中国建筑科学研究院 | Spray dust removal device for point detecting equipment |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989287A (en) * | 2014-12-02 | 2015-10-21 | 成都宸鸿科技有限公司 | Multipurpose drill pipe |
| CN104832082A (en) * | 2015-02-26 | 2015-08-12 | 徐州徐工基础工程机械有限公司 | Pneumatic DTH hammer reverse circulation slagging construction process for rotary drilling rig |
| CN107165572A (en) * | 2017-07-18 | 2017-09-15 | 河北省地矿局国土资源勘查中心 | Matched drilling tool for implementing reverse circulation drilling by using positive circulation down-the-hole hammer and drilling method |
| CN107165572B (en) * | 2017-07-18 | 2023-09-19 | 河北省地矿局国土资源勘查中心 | Matched drilling tool for implementing reverse circulation drilling by using forward circulation down-the-hole hammer and drilling method |
| CN111577177A (en) * | 2020-04-22 | 2020-08-25 | 中煤科工集团西安研究院有限公司 | Drilling device and drilling method for discharging slag by underground pneumatic impact crushed rock foam |
| CN111577177B (en) * | 2020-04-22 | 2022-03-22 | 中煤科工集团西安研究院有限公司 | Drilling device and drilling method for discharging slag by underground pneumatic impact crushed rock foam |
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Application publication date: 20101020 |