CN1766276B - DTH hammer double-tube drilling equipment and drilling method thereof - Google Patents

DTH hammer double-tube drilling equipment and drilling method thereof Download PDF

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Publication number
CN1766276B
CN1766276B CN 200510017186 CN200510017186A CN1766276B CN 1766276 B CN1766276 B CN 1766276B CN 200510017186 CN200510017186 CN 200510017186 CN 200510017186 A CN200510017186 A CN 200510017186A CN 1766276 B CN1766276 B CN 1766276B
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CN
China
Prior art keywords
hole
interior
drill bit
drilling
tube
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Expired - Fee Related
Application number
CN 200510017186
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Chinese (zh)
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CN1766276A (en
Inventor
孙友宏
刘冬生
赵大军
吴晓寒
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Jilin University
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Jilin University
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Priority to CN 200510017186 priority Critical patent/CN1766276B/en
Publication of CN1766276A publication Critical patent/CN1766276A/en
Application granted granted Critical
Publication of CN1766276B publication Critical patent/CN1766276B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention discloses a boring construction device of complex formation vibration detection, which is characterized by the following: the driller dynamic head anchors the inner and outer drill bits to rotate at the same speed through inner and outer drill rods, which compresses the air through vent pipe to actuate down-hole drill hammering blow drill; the inner and outer drill bits impacts the rotary drill to actuate the down-hole drill hammering blow to work, which compresses the air with hole inner rock powder to discharge out of the inner and outer drill bits; the dynamic head rotates to the horizontal position in order to connect the drill rod through the rotary dynamic head angle within 0-90 deg.c; the inner pipe drill tool is extracted out of outer pipe drill tool when drilling in the final hole; the outer pipe drill tool is remained in the hole bulkhead. The device improves the drilling efficiency and reduces the construction cost.

Description

Down-the-hole is hammered two-tube drilling tool and drilling method thereof into shape
Technical field:
The present invention relates to a kind of loose drilling equipment and drilling method that does not have glued sand, ovum, gravel, macadam and accompany complex stratigraphic drilling constructions such as ooze layer and hard formation, the particularly facility and the drilling method thereof of physical prospecting focus hole drill spy construction of being applicable to.
Background technology:
Carrying out the maximum problem of physical prospecting focus hole drill spy construction in sand, ovum, gravel, rubble stratum and interlayer is the pore-forming difficulty, following explosive difficulty, and speed of application is slow, and efficiency of construction is low.Its reason is that sand, ovum, gravel, rubble stratum are loose, hole wall instability in creeping into, and miss again seriously with mud off in the hole of often collapsing.Creep on existing ovum gravel stratum, in order to overcome collapse hole and leakage, adopts the sleeve pipe wall protecting method more.Because of the hole wall instability, sleeve pipe is difficult to arrive down the degree of depth of regulation, promptly enables the degree of depth that the grip pipe sinks to regulation, promotes sleeve pipe also very because of difficulty when finishing when creeping into, and causes the pore-forming time long thus, the serious problems that construction cost is high.
The positive and negative circulation of mud off is crept into and is applicable to the caving ground thinner thickness, has certain adhesion stress between the formation particles, and formation pore is smaller, the stratum that wastage is less.Mud off creeps into serious and the competent bed drilling efficiency is low for leakage, and bit wear is serious.
The steel cable percussion drilling is better for the ovum gravel stratum drilling effect that contains erratic boulder, Rolling Stone, utilizes the deadweight of drill bit to impact the way of dosing clay in compacted and the hole, and effectively retaining wall guarantees that hole wall is stable.But meet water in the hole, when formation pore was bigger, hole wall was difficult for stable.The steel cable impact rotating hours only accounts for 0.27%~0.4% of net cycle time, and drilling efficiency is low, and the steel cable percussion drilling can only creep into straight hole.
The drop impact method of creeping into is to utilize to drop hammer from certain altitude drop impact steel pipe, and steel pipe is squeezed in the scall, after the arrival desired depth, explosive is lowered in steel pipe, extracts steel pipe again.This method can only be used for than small particle diameter sand, ovum, gravel stratum, and hole depth is restricted.For the bigger ovum of particle diameter, gravel, the rubble stratum can't pore-forming.
The impactor drill hammer came broken solid rock at the bottom of the down-the-hole hammer single tube method of creeping into was utilized the compressed air-driven hole, and the rock dust of generation is blown out outside the hole outside drilling rod by compressed air.This method is for hard complete rock stratum, and drilling efficiency is higher, but for soft ovum, gravel, rubble stratum because hole wall collapse and can not pore-forming.
When the down-the-hole hammer advances with pipe bit, by the sleeve pipe retaining wall, though can creep into soft ovum, gravel, rubble stratum, but because sleeve pipe does not turn round, under manage the degree of depth and be restricted, and the eccentric block of off-balance bit exists sometimes owing to being blocked by landwaste can not reclaim the shortcoming that whole boring is scrapped, eccentric with pipe bit as the down-the-hole hammer that U.S. Ingersoll-rand company (Ingersoll-Rand USA) produces.
Inside and outside drilling rod turned round simultaneously during this method of double-wall drill pipe air reverse circulation drilling was crept into, and outer tube is as the sleeve pipe retaining wall, but can not creep into competent bed, was only applicable to sand bed, thin ovum gravel stratum, and the anti-circulation canal of this drilling tool is prone to by the grains of sand and stops up.
These boring methods can not satisfy the loose troublesome zone drilling of not having glued sand, ovum, gravel, rubble stratum and accompanying ooze layer and competent bed fully at present, and such bad ground often runs in engineering constructions such as seismic prospecting, construction of hydro project, slope anchorage, geological mapping, and workload is very big.
Summary of the invention:
Purpose of the present invention just is to overcome above-mentioned the deficiencies in the prior art, provides a kind of and is suitable for the loose down-the-hole that does not have glued sand, ovum, gravel, rubble stratum and accompany the troublesome zone drilling of ooze layer and competent bed and hammers two-tube drilling tool and method thereof into shape.
The objective of the invention is to realize in the following manner: it is that interior axle 22 and outer shaft 21 by unit head 1 connects and composes with outer drilling rod 12 upper ends by the interior drilling rod 14 of screw thread and two-tube drilling tool 5 respectively that down-the-hole is hammered two-tube drilling tool into shape.
Purpose of the present invention can also realize in the following manner: two-tube drilling tool 5 is to be sleeved in the outer tube drilling tool by interior pipe bit tool to constitute, and both are for being slidingly matched; Interior pipe bit tool be by interior drilling rod 14 by the down-the-hole hammer 13 that is threaded, down-the-hole hammer 13 is through spline and drill bit 6 formations in woodruff key is connected; The outer tube drilling tool is to be connected with adapter sleeve 9 by screw thread by outer drilling rod 12, and adapter sleeve 9 constitutes by the pin 8 outer drill bit 7 that is slidingly connected, and also outer drill bit 7 and adapter sleeve 9 can be made of one; The stage casing of outer drill bit 7 is provided with the terrace 10 of appearing on the stage, and the centre of interior drill bit 6 is provided with boss 11, and interior drilling rod 14 outer rings are welded with guider 15; Unit head 1 set interior axle 22 assembles by spline with main shaft 20, and interior axle 22 relative main shafts 20 can fluctuate, and outer shaft 21 and main shaft 20 are the assembling of six sides cover, and outer shaft 21 relative main shafts 20 also can fluctuate.
Another object of the present invention realizes in the following manner: this method comprises following order and step: drill bit 6 and outer drill bit 7 were with the speed revolution in unit head 1 drove by interior drilling rod 14 and outer drilling rod 12; Compressed air via interior drilling rod 14 promote down-the-holes hammer 13 impact in the hammering block of drill bit 6 rear ends, impact the set terrace 10 of appearing on the stage of outer drill bit 7 by the set boss 11 in interior drill bit 6 stage casings, outer drill bit 7 and interior drill bit 6 synchronous impact rotatings are crept into; Promote the compressed air that down-the-hole hammer 13 impacts after the acting and on the annular gap of interior drilling rod 14 and outer drilling rod 12, return the discharge face of land through interior drill bit 6 bottom vents cutting carrings; The pipe bit tool proposes from the outer tube drilling tool in when creeping into whole hole, and the outer tube drilling tool is stayed the retaining wall hole in, and explosive, various tubing or various measuring apparatus be along in the hand-hole under the outer tube wall, arrive at the bottom of the hole after proposition outer tube drilling tool.
When a. interior pipe bit tool was constant, 9 employings of outer drill bit 7 and adapter sleeve were slidingly connected, and can creep into and accompany competent bed; 9 of outer drill bit 7 and adapter sleeves are made of one, and can creep into soft sand, ovum, gravel, rubble stratum;
When b. the outer tube drilling tool was constant, interior drill bit 6 changed three wings or scraper type into, is used to creep into the stratum that accompanies ooze.
Can adopt air, foam, mud or clear water as drilling fluid when c. creeping into.
Beneficial effect of the present invention: solved the boring on loose sand, ovum, gravel, rubble stratum and the technical barrier of following explosive, compared with prior art drilling efficiency improves nearly 5 times, and construction cost reduces 3-4 doubly.Compared with prior art see the following form:
Content Drilling efficiency (m/h) Boring cost (unit/rice)
Prior art ??1.4~7.8 ??1200~1700
The present invention ??10~55 ??300~500
Accompanying drawing and description of drawings:
Accompanying drawing 1 is hammered two-tube drilling tool structure figure into shape for down-the-hole
Accompanying drawing 2 is the sectional view of two-tube drilling tool 5
Accompanying drawing 3 is the sectional view of unit head 1
Description of drawings
1 unit head, 2 masts, 3 pivot angle oil cylinders, 4 connecting rods, 5 two-tube drilling tools, drill bits in 6,7 outer drill bits, 8 pins, 9 adapter sleeves, 10 terraces of appearing on the stage, 11 boss, 12 outer drilling rods, 13 down-the-holes hammer, 14 interior drilling rods, 15 guiders, 16 guide rods, 17 collars, 18 blast pipes, 19 hydraulic motors, 20 main shafts, 21 outer shafts, 22 interior axles, 23 pinions, 24 gear wheels, 25 air draft covers, 26 exhaust ducts.
The specific embodiment:
Be described in further detail below by example:
The both sides of unit head 1 are fixed on connecting rod 4 on the shell of unit head 1 by key pin, connecting rod 4 is connected with pivot angle oil cylinder 3 by hinge, pivot angle oil cylinder 3 is connected with mast 2 by hinge, and unit head 1 makes 0-90 ° of unit head 1 revolution by pivot angle oil cylinder 3, so that connect stubborn drilling rod.When adding stacks, unit head arrives mast 2 bottoms 1 time, and unit head 1 gyroaxis put horizontal level, behind the interior axle 22 and interior drilling rod 14 and outer shaft 21 and outer drilling rod 12 stubborn connecing with unit head 1, unit head 1 rises drilling rod is mentioned, and when unit head 1 rose to the top, drilling tool was vertical state, the lower end is connected with two-tube drilling tool 5 in the hole, finishes adjunction drilling tool process.When finishing boring lifting drilling tool, working power 1 lifting while turning round after two-tube drilling tool 5 is dismantled with clamper in the bottom, utilizes pivot angle oil cylinder 3 that two-tube drilling tool 5 is outwards swung, and drilling tool fell.
Blast pipe 18 passes the centre bore of main shaft 20, two hydraulic motors 19 are screwed on the housing of unit head 1, pinion 23 is fixed on the turning cylinder of hydraulic motor 19 by key, gear wheel 24 is fixed on the main shaft 20 by key, two hydraulic motors 19 drive main shaft 20 by pinion 23 engagement gear wheels 24 and rotate, interior axle 22 assembles by spline with main shaft 20, interior axle 22 relative main shafts 20 can fluctuate, outer shaft 21 is the assembling of six sides cover with main shaft 20, outer shaft 21 relative main shafts 20 also can fluctuate, that can realize down-the-hole hammer 13 when carrying drilling tool blows the hole function by force, in discharging, bulky grain in the outer drilling rod annular gap, assurance circulation canal cleaning, unimpeded, not stuck between interior drilling rod 14 and the outer drilling rod 12 by rock dust, simultaneously unloading outside during drilling rod assurance tool joint screw thread be not damaged.Exhaust duct 26 is welded on the air draft cover 25, air draft cover 25 is contained on the main shaft 20 by bearing, the collar 17 is welded on the air draft cover 25, guide rod 16 is sleeved in the collar 17, and be connected on unit head 1 housing by screw, guide rod 16 restriction air draft covers 25 can only move up and down and can not turn round, and blast pipe 18 is contained on the housing of unit head 1 by the rubber seal assembly.
Two-tube drilling tool 5 is to be made of outer tube drilling tool and interior pipe bit tool, and interior pipe bit tool is sleeved in the outer tube drilling tool, and both are for being slidingly matched; The outer tube drilling tool is to be connected with adapter sleeve 9 by screw thread by outer drilling rod 12, and adapter sleeve 9 constitutes by the pin 8 outer drill bit 7 that is slidingly connected, and the stage casing of outer drill bit 7 is provided with the terrace 10 of appearing on the stage, and also outer drill bit 7 and adapter sleeve 9 can be made of one; Interior pipe bit tool is by the down-the-hole hammer 13 that is threaded by interior drilling rod 14, down-the-hole hammer 13 is through spline and drill bit 6 formations in woodruff key is connected, interior drilling rod 14 hypomere outer rings are welded with guider 15, make inside and outside drilling rod concentric, being connected of drilling rod 14 in when guaranteeing effectively to arrange powder with the lifting drilling tool, the centre of interior drill bit 6 is provided with boss 11; The interior axle 22 of unit head 1 is connected with the interior drilling rod 14 of two-tube drilling tool 5 and the upper end of outer drilling rod 12 respectively by screw thread with outer shaft 21 lower ends.
Drill bit 6 and outer drill bit 7 were with the speed revolution in unit head 1 drove by interior drilling rod 14 and outer drilling rod 12, the hammering block of compressed air drill bit 6 rear ends in blast pipe 18 promotes 13 impacts of down-the-hole hammer, by the set terrace 10 of appearing on the stage of the outer drill bit of set boss 11 indirect strokes in interior drill bit 6 stage casings 7, outer drill bit 7 and interior drill bit 6 synchronous impact rotatings are crept into, promote after the acting of down-the-hole hammering blow compressed air through interior drill bit 14 bottom vents cutting carrings through interior drilling rod 14 with outside return the discharge face of land on the annular gap of drilling rod 12; The pipe bit tool proposes from the outer tube drilling tool in when creeping into whole hole, and with outer tube drilling tool retaining wall, explosive drops into along outer tube drilling tool inwall, proposes the outer tube drilling tool after arriving at the bottom of the hole, and explosive is stayed in the hole.
Drill bit and outer drill bit were with the speed revolution in drill power head drove by interior drilling rod and outer drilling rod.Compressed air in the drilling rod, promotes the hammering block of drill bit rear end in the down-the-hole hammering blow in blast pipe enters, fractured rock on the drill bit in part energy acts on; Another part energy impacts the set terrace of appearing on the stage of outer drill bit by the set boss in interior drill bit stage casing, is delivered to fractured rock on the outer drill bit, makes outer drill bit and the synchronous impact rotating of interior drill bit creep into.Promote the annular space of rock dust between interior drill bit and outer drill bit in the compressed air portable hole after the acting of down-the-hole hammering blow, between drilling rod, discharge inside and outside entering by unit head both sides exhaust duct.Interior pipe bit tool proposes from the outer tube drilling tool after creeping into whole hole.

Claims (6)

1. one kind is mainly used in sand, ovum, gravel, rubble stratum and accompanies the ooze layer and the down-the-hole of bad ground such as solid rock layer is hammered two-tube drilling tool into shape, it is characterized in that it is respectively by connecting and composing on interior drilling rod (14) in screw thread and the two-tube drilling tool (5) and the outer drilling rod (12) by the interior axle (22) of unit head (1) and outer shaft (21) that down-the-hole is hammered two-tube drilling tool into shape.
2. hammer two-tube drilling tool into shape according to the said down-the-hole of claim 1, it is characterized in that: two-tube drilling tool (5) is to be sleeved in the outer tube drilling tool by interior pipe bit tool to constitute, and both are for being slidingly matched.
3. hammer two-tube drilling tool into shape according to the said down-the-hole of claim 2, it is characterized in that: interior pipe bit tool be by interior drilling rod (14) by the down-the-hole hammer (13) that is threaded, down-the-hole hammer (13) is through spline and drill bit (6) formation in woodruff key is connected; The outer tube drilling tool is to be connected with adapter sleeve (9) by screw thread by outer drilling rod (12), and adapter sleeve (9) constitutes by pin (8) the outer drill bit (7) that is slidingly connected, and also outer drill bit (7) and adapter sleeve (9) can be made of one;
4. hammer two-tube drilling tool into shape according to the said down-the-hole of claim 3, it is characterized in that: the stage casing of outer drill bit (7) is provided with the terrace of appearing on the stage (10), and the centre of interior drill bit (6) is provided with boss (11), and interior drilling rod (14) outer ring is welded with guider (15).
5. hammer two-tube drilling tool into shape according to the said down-the-hole of claim 1, it is characterized in that: axle (22) assembled by spline with main shaft (20) in unit head (1) was set, interior axle (22) main shaft (20) relatively can fluctuate, outer shaft (21) is the assembling of six sides cover with main shaft (20), and outer shaft (21) main shaft (20) relatively also can fluctuate.
6. hammer two-tube drilling method into shape according to the said down-the-hole of claim 1, it is characterized in that: this method comprises following order and step: drill bit (6) and outer drill bit (7) were with the speed revolution in unit head (1) drove by interior drilling rod (14) and outer drilling rod (12); Compressed air promotes the hammering block that down-the-hole hammer (13) impacts interior drill bit (6) rear end via interior drilling rod (14), the boss (11) set by interior drill bit (6) stage casing impacts the set terrace of appearing on the stage (10) of outer drill bit (7), and the synchronous impact rotating of outer drill bit (7) and interior drill bit (6) is crept into; Promote the compressed air that down-the-hole hammer (13) impacts after the acting and on the annular gap of interior drilling rod (14) and outer drilling rod (12), return the discharge face of land through interior drill bit (6) bottom vents cutting carring; The pipe bit tool proposes from the outer tube drilling tool in when creeping into whole hole, and the outer tube drilling tool is stayed the retaining wall hole in, and explosive, various tubing or various measuring apparatus be along in the hand-hole under the outer tube wall, arrive at the bottom of the hole after proposition outer tube drilling tool;
When a. interior drilling tool is constant, adopt between outer drill bit (7) and adapter sleeve (9) to be slidingly connected, can creep into and accompany competent bed; Be made of one between outer drill bit (7) and adapter sleeve (9), can creep into soft sand, ovum, gravel, rubble stratum;
When b. outer drilling tool was constant, interior drill bit (6) changed three wings or scraper type into, is used to creep into the stratum that accompanies ooze;
Can adopt air, foam, mud or clear water as drilling fluid when c. creeping into.
CN 200510017186 2005-10-10 2005-10-10 DTH hammer double-tube drilling equipment and drilling method thereof Expired - Fee Related CN1766276B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200510017186 CN1766276B (en) 2005-10-10 2005-10-10 DTH hammer double-tube drilling equipment and drilling method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200510017186 CN1766276B (en) 2005-10-10 2005-10-10 DTH hammer double-tube drilling equipment and drilling method thereof

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CN1766276A CN1766276A (en) 2006-05-03
CN1766276B true CN1766276B (en) 2010-11-03

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101519959B (en) * 2009-04-07 2012-07-18 铁道第三勘察设计院集团有限公司 Drilling touching shocking integrative prospecting instrument and use method thereof
CN102644285B (en) * 2011-02-16 2016-01-27 五冶集团上海有限公司 Anchor cable is holed anti-collapse hole construction method
CN103015408A (en) * 2012-12-20 2013-04-03 山东万鑫建设有限公司 Cast-in-place pile synchronous casing hole-forming constructing method
CN110685604A (en) * 2019-10-24 2020-01-14 山西能源学院 Self-adjusting double-pipe drilling tool for drilling in soft and hard uneven sandy soil layer

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