CN107842384A - The synchronous anchor and brill anchor method of a kind of hollow screw anchor pole - Google Patents

The synchronous anchor and brill anchor method of a kind of hollow screw anchor pole Download PDF

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Publication number
CN107842384A
CN107842384A CN201711363832.XA CN201711363832A CN107842384A CN 107842384 A CN107842384 A CN 107842384A CN 201711363832 A CN201711363832 A CN 201711363832A CN 107842384 A CN107842384 A CN 107842384A
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CN
China
Prior art keywords
hollow screw
anchor pole
screw anchor
drill bit
drilling rod
Prior art date
Application number
CN201711363832.XA
Other languages
Chinese (zh)
Inventor
张农
杨可
冉智
Original Assignee
中国矿业大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国矿业大学 filed Critical 中国矿业大学
Priority to CN201711363832.XA priority Critical patent/CN107842384A/en
Publication of CN107842384A publication Critical patent/CN107842384A/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00Setting anchoring-bolts
    • E21D20/003Machines for drilling anchor holes and setting anchor bolts
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts

Abstract

Synchronous the present invention relates to a kind of hollow screw anchor pole bores anchor method, suitable for mine and Geotechnical Engineering, the reinforcing for the weak coal petrography that is particularly suitable for use in.Construction equipment and material include double rotary shaft rig, hollow screw anchor pole, collapsible drill bit and drilling rods.Drill bit is connected to boring bar head and is placed on the inside of hollow screw anchor pole during construction, keeps drill bit to expose, and drilling rod and anchor pole afterbody are respectively embedded into two rotary shafts of double rotary shaft rigs;When rotary shaft rotates, drill bit deploys and drilled, and hollow screw anchor pole is synchronously crept into;After drilling terminates, drill bit is shunk, and drilling rod and drill bit are directly extracted out, and hollow screw anchor pole anchors naturally by the spiral of outer wall;Then to anchor pole pretension.The present invention bores anchor synchronization, produces anchor force by spiral and hole wall effect, process is easy;Solve traditional deficiency for boring the easy collapse hole of weak coal petrography in anchor method and powder stick anchoring difference, hence it is evident that improve supporting efficiency, meet efficiently, the supporting requirement of safety.

Description

The synchronous anchor and brill anchor method of a kind of hollow screw anchor pole

Technical field

Synchronous the present invention relates to a kind of hollow screw anchor pole bores anchor method, and being particularly suitable for use in mine and Geotechnical Engineering makes The synchronous anchor and brill anchor method of hollow screw anchor pole.

Background technology

Suspension roof support is a kind of economical and effective coal and rock reinforcement technique, can significantly improve the load-carrying properties of coal lithosome And stability, it is used widely in mine and Geotechnical Engineering.Conventional anchor construction method is:Got into band drill bit drilling rod Hole, borehole cleaning, extract drilling rod out, be then sequentially placed into resin anchoring agent, anchor rod body, anchoring is produced with anchor rod stirring resin anchoring agent Power, then carry out pretension.

There are problems in the construction method of conventional anchor, particularly in weak coal and rock.It is described below:1. need to use band Drill bit drilling rod is punched, and drilling rod is extracted out after pore-forming, then puts into resin anchoring agent, anchor rod body successively, complex steps, during waste Between;2. in soft rock mass, the anchor of resin anchoring agent is poor, easily causes anchor force deficiency;3. the drilling in weak coal and rock Contraction distortion is rapid, bit freezing easily occurs, drilling blocks, the useless hole of formation.And existing self drilling anchor needs disposable drill bit, the body of rod Intensity requirement is high, expensive;Resin anchoring agent simply is substituted for from anchor anchor bolt construction, construction technology fails significantly to simplify.This A little problems seriously constrain application of the bolt support technology in weak coal and rock.

The content of the invention

Technical problem:For above-mentioned skill, propose that one kind is simple in construction, easy to use, drilling effect is good, is easy to wind or water defeated The synchronous anchor and brill anchor method of the hollow screw anchor pole entered.

Technical scheme:The synchronous anchor of the hollow screw anchor pole of the present invention, including anchor boring device, power set and fastening fill Put;Wherein, anchor boring device includes drilling rod and hollow screw anchor pole, and hollow screw anchor pole afterbody is provided with external spiral, and drilling rod is arranged on In hollow screw anchor pole, boring bar head is provided with collapsible drill bit, and drilling rod is connected with hollow screw anchor pole by power set, institute Stating power set includes double rotary shaft rigs, and the double rotations matched with drilling rod and hollow screw anchor pole are provided with double rotary shaft rigs Axle, the fastener include the installation pallet and nut from anchoring by hollow screw anchor pole afterbody body of rod external spiral.

Penetrated in the middle part of described hollow screw anchor pole, outer wall is provided with spiral.

Drilling rod and hollow screw the anchor pole afterbody is six ribs or coarse-pitch thread structure, is matched with double rotary shafts, described Two rotating shaft each speed regulations of double rotary shafts.

Described drilling rod is hollow drill pipe, can defeated wind or water, the 0.25- of a diameter of hollow screw anchor pole internal diameter of drilling rod 0.85 times, length is more than hollow screw anchor pole.

A kind of the synchronous of hollow screw anchor pole bores anchor method, and its step is as follows:

A. drilling rod is loaded inside hollow screw anchor pole, the afterbody of drilling rod and hollow screw anchor pole is sequentially embedded double rotations In double rotary shafts in axle rig, collapsible drill bit is connected to boring bar head, collapsible drill bit exposes anchor rod body, and keeps Collapsible drill bit is in contraction state;

B. two rotating shafts of double rotary shafts rotate simultaneously, drive drilling rod and the rotation of hollow screw anchor pole respectively, now Collapsible drill bit stretching, extension, drilling rod and hollow screw anchor pole is crept into towards scar, collapsible drill bit broken rock pore-forming, hollow screw anchor Bar is simultaneously as collapsible drill bit promotes into rock mass, and rock dust caused by drilling is between hollow spiral anchor rod, drilling rod, drilling Discharge in space;

C. after the completion of creeping into, double rotary shafts are stopped the rotation, and collapsible drill bit shrinks, and are rotated by hollow screw anchor pole, with double Axle separates, and is together directly extracted drilling rod, scalable drill bit out out of hollow spiral anchor rod using double rotary shafts, by hollow screw anchor Bar is retained in rock;

D. body of rod external spiral of the hollow screw anchor pole by being set on itself afterbody is mounted directly pallet, nut from anchoring Carry out pretension, installation.

Two rotating shafts of double rotary shafts drive drilling rod respectively and hollow screw anchor pole is rotated to identical direction, it is necessary to broken rock The drilling rod drilling speed of pore-forming is high, and power is big, and hollow screw anchor pole only needs part broken rock, and rotating speed is low;Drilling rod and the rotation of hollow screw anchor pole Turn direction to be equally easy to arrange powder.

The collapsible drill bit is in deployed condition when rotated, and contraction state is in when non-rotating, and in contraction-like During state, collapsible bit diameter is less than the internal diameter of hollow screw anchor pole, can be moved inside spiral anchor rod, collapsible brill during expansion Head diameter is less than the spiral external diameter of hollow screw anchor pole.

The stretching, extension of collapsible drill bit is controlled with shrinking by operator, or by the centrifugal force controlled stretching, extension that drills with shrinking.

Beneficial effect:By adopting the above-described technical solution, the present invention has the following advantages that compared with prior art:

(1) construction drill and installation two processes of anchor pole are carried out simultaneously, are shortened the time of single anchor rod construction, are saved Engineering time, support efficiency is improved, make supporting much sooner;

(2) hollow screw anchor pole need not reduce from drilled as holes, the intensity requirement of spiral anchor rod, and support cost is low;

(3) hollow screw anchor pole produces anchor force by body of rod external spiral and hole wall effect, overcomes in soft rock mass, It is poor using resin anchoring agent anchor, the defects of easily causing anchor force deficiency.

(4) construct when before bore after anchor, it is anchor rod anchored after the completion of drilling rod extract out, avoid in traditional handicraft occur bit freezing, bore Hole plug, form the situation in useless hole.

Brief description of the drawings

Fig. 1 is the structural representation of the synchronous anchor of hollow screw anchor pole of the present invention.

In figure:The double rotary shaft rigs of 1-, the double rotary shafts of 2-, 3- drilling rods, 4- hollow screw anchor poles, 5- is collapsible drill bit.

Embodiment

One embodiment of the present of invention is further described below in conjunction with the accompanying drawings:

As shown in figure 1, the synchronous anchor of the hollow screw anchor pole of the present invention, it is characterized in that:It includes anchor boring device, power dress Put and fastener;Wherein, anchor boring device includes drilling rod 3 and hollow screw anchor pole 4, and drilling rod 3 is hollow drill pipe, can defeated wind or Water, 0.25-0.85 times of a diameter of internal diameter of hollow screw anchor pole 4 of drilling rod 3, length is more than hollow screw anchor pole 4, hollow screw The middle part of anchor pole 4 penetrates, and outer wall is provided with spiral, and the afterbody of hollow screw anchor pole 4 is provided with external spiral, and drilling rod 3 is arranged on hollow screw anchor In bar 4, the head of drilling rod 3 is provided with collapsible drill bit 5, and drilling rod 3 is connected with hollow screw anchor pole 4 by power set, described dynamic Power apparatus includes double rotary shaft rigs 1, and the double rotations matched with drilling rod 3 and hollow screw anchor pole 4 are provided with double rotary shaft rigs 1 Axle 2, drilling rod 3 and hollow screw anchor pole 4 afterbody are six ribs or coarse-pitch thread structure, are matched with double rotary shafts 2, and described is double Two rotating shaft each speed regulations of rotary shaft 2, the fastener include passing through the afterbody body of rod external spiral of hollow screw anchor pole 4 from anchor Solid installation pallet and nut.

A kind of the synchronous of hollow screw anchor pole bores anchor method, it is characterized in that step is as follows:

A. drilling rod 3 is loaded inside hollow screw anchor pole 4, the afterbody of drilling rod 3 and hollow screw anchor pole 4 be sequentially embedded double In double rotary shafts 2 in rotary shaft rig 1, collapsible drill bit 5 is connected to the head of drilling rod 3, collapsible drill bit 5 exposes anchor pole bar Body, and keep collapsible drill bit 5 to be in contraction state;

B. two rotating shafts of double rotary shafts 2 rotate simultaneously, and two rotating shafts of double rotary shafts 2 drive drilling rod 3 and hollow respectively Spiral anchor rod 4 rotates to identical direction, it is necessary to which the drilling speed of drilling rod 3 of broken rock pore-forming is high, and power is big, and hollow screw anchor pole 4 only needs Part broken rock, rotating speed are low;Drilling rod 3 is easy to arrange powder as the direction of rotation of hollow screw anchor pole 4, and now collapsible drill bit 5 stretches, Drilling rod 3 and hollow screw anchor pole 4 are crept into towards scar, the collapsible broken rock pore-forming of drill bit 5, hollow screw anchor pole 4 simultaneously with Collapsible drill bit 5 is promoted into rock mass, and rock dust caused by drilling is arranged from the space between hollow spiral anchor rod 4, drilling rod 3, drilling Go out;

C. after the completion of creeping into, double rotary shafts 2 are stopped the rotation, and collapsible drill bit 5 shrinks, and are turned by hollow screw anchor pole 4, with double Moving axis 2 separates, and is together directly extracted drilling rod 3, scalable drill bit 5 out out of hollow spiral anchor rod 4 using double rotary shafts 2, by Empty spiral anchor rod 4 is retained in rock;

D. body of rod external spiral of the hollow screw anchor pole 4 by being set on itself afterbody is mounted directly pallet, nut from anchoring Carry out pretension, installation.

The stretching, extension of collapsible drill bit 5 is controlled with shrinking by operator, or by the centrifugal force controlled stretching, extension that drills with shrinking, Collapsible drill bit 5 is in deployed condition when rotated, collapsible when contraction state is in when non-rotating, and being in contraction state The diameter of drill bit 5 is less than the internal diameter of hollow screw anchor pole 4, can be moved inside spiral anchor rod 4, the collapsible diameter of drill bit 5 during expansion Less than the spiral external diameter of hollow screw anchor pole 4.

Claims (8)

1. a kind of synchronous anchor of hollow screw anchor pole, it is characterized in that:It includes anchor boring device, power set and fastener;Its In, anchor boring device includes drilling rod(3)With hollow screw anchor pole(4), hollow screw anchor pole(4)Afterbody is provided with external spiral, drilling rod(3) It is arranged on hollow screw anchor pole(4)It is interior, drilling rod(3)Head is provided with collapsible drill bit(5), drilling rod(3)With hollow screw anchor pole(4) It is connected by power set, the power set include double rotary shaft rigs(1), double rotary shaft rigs(1)In be provided with and brill Bar(3)With hollow screw anchor pole(4)Double rotary shafts of matching(2), the fastener is including passing through hollow screw anchor pole(4)Tail Installation pallet and nut of portion's body of rod external spiral from anchoring.
2. the synchronous anchor of hollow screw anchor pole according to claim 1, it is characterised in that:Described hollow screw anchor pole (4)Middle part penetrates, and outer wall is provided with spiral.
3. the synchronous of hollow screw anchor pole according to claim 2 bores anchor method, it is characterised in that:The drilling rod(3)With Hollow screw anchor pole(4)Afterbody is six ribs or coarse-pitch thread structure, with double rotary shafts(2)Match, described double rotary shafts(2)'s Two rotating shaft each speed regulations.
4. the synchronous of hollow screw anchor pole according to claim 2 bores anchor method, it is characterised in that:Described drilling rod(3) For hollow drill pipe, can defeated wind or water, drilling rod(3)A diameter of hollow screw anchor pole(4)0.25-0.85 times of internal diameter, length is big In hollow screw anchor pole(4).
5. a kind of the synchronous of hollow screw anchor pole of the synchronous anchor of the hollow screw anchor pole described in usage right requirement 1 bores anchor side Method, it is characterized in that step is as follows:
A. by drilling rod(3)Load hollow screw anchor pole(4)Inside, by drilling rod(3)With hollow screw anchor pole(4)Afterbody it is embedding successively Enter double rotary shaft rigs(1)In double rotary shafts(2)On, by collapsible drill bit(5)It is connected to drilling rod(3)Head, collapsible brill Head(5)Expose anchor rod body, and keep collapsible drill bit(5)In contraction state;
B. double rotary shafts(2)Two rotating shafts rotate simultaneously, respectively drive drive drilling rod(3)With hollow screw anchor pole(4)Rotation, Now collapsible drill bit(5)Stretching, extension, by drilling rod(3)With hollow screw anchor pole(4)Crept into towards scar, collapsible drill bit(5)It is broken Rock pore-forming, hollow screw anchor pole(4)Simultaneously with collapsible drill bit(5)Promoted into rock mass, rock dust caused by drilling is from hollow Spiral anchor rod(4), drilling rod(3), space discharge between drilling;
C. after the completion of creeping into, double rotary shafts(2)Stop the rotation, collapsible drill bit(5)Shrink, by hollow screw anchor pole(4)It is and double Rotary shaft(2)Separation, utilizes double rotary shafts(2)By drilling rod(3), scalable drill bit(5)Together from hollow spiral anchor rod(4)It is interior straight Extraction is connect, by hollow screw anchor pole(4)It is retained in rock;
D. hollow screw anchor pole(4)Body of rod external spiral by being set on itself afterbody is mounted directly pallet, nut enters from anchoring Row pretension, installation.
6. the synchronous of hollow screw anchor pole according to claim 5 bores anchor method, it is characterized in that:Double rotary shafts(2)Two Individual rotating shaft drives drilling rod respectively(3)With hollow screw anchor pole(4)Rotated to identical direction, it is necessary to the drilling rod of broken rock pore-forming(3) Drilling speed is high, and power is big, hollow screw anchor pole(4)Only need part broken rock, rotating speed is low;Drilling rod(3)With hollow screw anchor pole(4)Rotation Equally it is easy to arrange powder in direction.
7. the synchronous of hollow screw anchor pole according to claim 5 bores anchor method, it is characterized in that:The collapsible drill bit (5)Deployed condition is in when rotated, when contraction state is in when non-rotating, and being in contraction state, collapsible drill bit(5)Directly Footpath is less than hollow screw anchor pole(4)Internal diameter, can be in spiral anchor rod(4)Inside is mobile, collapsible drill bit during expansion(5)Diameter is small In hollow screw anchor pole(4)Spiral external diameter.
8. the synchronous of hollow screw anchor pole according to claim 5 bores anchor method, it is characterized in that:Collapsible drill bit(5)'s Stretching, extension is controlled with shrinking by operator, or is stretched and shunk by the centrifugal force controlled that drills.
CN201711363832.XA 2017-12-18 2017-12-18 The synchronous anchor and brill anchor method of a kind of hollow screw anchor pole CN107842384A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711363832.XA CN107842384A (en) 2017-12-18 2017-12-18 The synchronous anchor and brill anchor method of a kind of hollow screw anchor pole

Applications Claiming Priority (2)

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CN201711363832.XA CN107842384A (en) 2017-12-18 2017-12-18 The synchronous anchor and brill anchor method of a kind of hollow screw anchor pole
PCT/CN2018/105356 WO2019119901A1 (en) 2017-12-18 2018-09-13 Synchronous anchor and drilling and anchoring method for hollow helical anchor bolt

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CN107842384A true CN107842384A (en) 2018-03-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019119901A1 (en) * 2017-12-18 2019-06-27 中国矿业大学 Synchronous anchor and drilling and anchoring method for hollow helical anchor bolt

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02308088A (en) * 1989-05-23 1990-12-21 Toho Kinzoku Kk Drill device
EP1223306A1 (en) * 1999-09-28 2002-07-17 Kfc Ltd. Ground reinforcing method
CN101566046A (en) * 2009-06-11 2009-10-28 石家庄中煤装备制造有限公司 Anti-collapse hole drill tool
CN101802420A (en) * 2007-09-14 2010-08-11 长年Tm公司 Self-drilling anchor
CN201679510U (en) * 2010-04-10 2010-12-22 中国矿业大学 Drilling-injecting-anchoring integrated anchor rod
CN202416312U (en) * 2011-12-13 2012-09-05 江苏建筑职业技术学院 Pre-blastable anchor rod with integration of drilling, injecting and anchoring
CN103277122A (en) * 2013-05-30 2013-09-04 湖南科技大学 Method for drilling anchor rod hole and anchoring anchor rod in broken roof
CN205477692U (en) * 2016-04-14 2016-08-17 中铁建大桥工程局集团第四工程有限公司 Be used for reinforced (rfd) stock structure of barrel within range slope body

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107842384A (en) * 2017-12-18 2018-03-27 中国矿业大学 The synchronous anchor and brill anchor method of a kind of hollow screw anchor pole

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02308088A (en) * 1989-05-23 1990-12-21 Toho Kinzoku Kk Drill device
EP1223306A1 (en) * 1999-09-28 2002-07-17 Kfc Ltd. Ground reinforcing method
CN101802420A (en) * 2007-09-14 2010-08-11 长年Tm公司 Self-drilling anchor
CN101566046A (en) * 2009-06-11 2009-10-28 石家庄中煤装备制造有限公司 Anti-collapse hole drill tool
CN201679510U (en) * 2010-04-10 2010-12-22 中国矿业大学 Drilling-injecting-anchoring integrated anchor rod
CN202416312U (en) * 2011-12-13 2012-09-05 江苏建筑职业技术学院 Pre-blastable anchor rod with integration of drilling, injecting and anchoring
CN103277122A (en) * 2013-05-30 2013-09-04 湖南科技大学 Method for drilling anchor rod hole and anchoring anchor rod in broken roof
CN205477692U (en) * 2016-04-14 2016-08-17 中铁建大桥工程局集团第四工程有限公司 Be used for reinforced (rfd) stock structure of barrel within range slope body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019119901A1 (en) * 2017-12-18 2019-06-27 中国矿业大学 Synchronous anchor and drilling and anchoring method for hollow helical anchor bolt

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Application publication date: 20180327