CN106640159A - Connecting sleeve sealing structure for self-drilling type hollow grouting anchors - Google Patents

Connecting sleeve sealing structure for self-drilling type hollow grouting anchors Download PDF

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Publication number
CN106640159A
CN106640159A CN201610925784.8A CN201610925784A CN106640159A CN 106640159 A CN106640159 A CN 106640159A CN 201610925784 A CN201610925784 A CN 201610925784A CN 106640159 A CN106640159 A CN 106640159A
Authority
CN
China
Prior art keywords
self
grouting
tubular
hollow grouting
drilling
Prior art date
Application number
CN201610925784.8A
Other languages
Chinese (zh)
Inventor
许岩波
张丰霞
杜景景
Original Assignee
洛阳中岩工程材料有限公司
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 洛阳中岩工程材料有限公司 filed Critical 洛阳中岩工程材料有限公司
Priority to CN201610925784.8A priority Critical patent/CN106640159A/en
Publication of CN106640159A publication Critical patent/CN106640159A/en

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Classifications

    • 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

The invention provides a connecting sleeve type sealing structure for self-drilling type hollow grouting anchors. A connecting sleeve comprises a tubular body. Inner threads are separately arranged in inner holes in the two ends of the tubular body and used for being connected with the self-drilling type hollow grouting anchors. An annular boss is arranged at an inner hole in the middle of the tubular body and used for positioning of the self-drilling type hollow grouting anchors connected with the two ends of the tubular body. An inner annular face of the annular boss is provided with a sealing groove used for mounting a sealing ring. By adoption of the connecting sleeve type sealing structure, the phenomenon of grout leakage of the self-drilling type hollow anchors in the grouting process is avoided, the problem of excessive loss of the grouting pressure in the grouting process is further solved, the compactness of solidified cement grout is ensured, it is ensured that rock fractures can be quite well filled with the grout, and the project construction quality is greatly improved.

Description

A kind of Self-drilling hollow grouting anchoring-bolt adapter sleeve sealing structure

Technical field

The present invention relates to self-drilling hollow anchor bars slurry injection technique field in geotechnical anchor engineering, in particularly a kind of self-drilling type Empty grouted anchor bar adapter sleeve sealing structure.

Background technology

Self-drilling hollow grouting anchoring-bolt is applied in large quantities advanced in tunnel as a kind of effectively anchoring means Shield, radial direction supporting, slope reinforcement, subgrade strengthening and tunnel disease training works, in recent years, China railways system treasured into two Line, precious center line, Nanning Kunming Railway, Xikang line, north yellow line, up to ten thousand lines, Shui Baixian, the big line of the Chu of vast line and highway system, beautiful unit It is widely used in the engineerings such as the dozens of such as line tunnel, roadbed, side slope, achieves significant social benefit and good Economic benefit.But at present, due to construction technology imperfection in work progress, quality cannot in work progress for domestic anchor pole Ensure well, during self-drilling hollow anchor bars slip casting, without sealing device, cause spillage, grouting pressure loss it is serious, Cement grout can not be filled into well in rock cranny, so as to construction quality greatly reduces.

The content of the invention

The technical problem to be solved is to provide a kind of Self-drilling hollow grouting anchoring-bolt adapter sleeve sealing structure, Can solve the problem that spillage during bolt grouting, grouting pressure lose serious, cement grout and can not well be filled into rock cranny In problem, improve construction quality.

In order to realize solving the purpose of above-mentioned technical problem, following technical scheme is present invention employs:In a kind of self-drilling type Empty grouted anchor bar adapter sleeve sealing structure, is characterized in that:The adapter sleeve includes tubular body;Tubular body two ends endoporus is equal Internal thread is provided with, for connecting Self-drilling hollow grouting anchoring-bolt;Annular boss is provided with the endoporus in tubular body centre position, For the positioning of the Self-drilling hollow grouting anchoring-bolt of two ends connection, sealed groove is provided with the annular boss inner ring surface, is used In installation sealing ring.

After rock mass pore-forming, sealing ring is installed in the sealed groove of adapter sleeve, one is respectively connected certainly at adapter sleeve two ends Brill formula hollow grouting anchor, anchor pole total length is provided with external screw thread, and two ends are provided with one section of diameter less than adapter sleeve annular boss The step of annular diameters, to ensure that step can pass through adapter sleeve annular boss;Two hollow grouting anchors are all screwed and connected Female connector convex annular table top contact position, anchor pole front end is provided with 30~60 chamfering, in anchor pole Leading end chamfer and sealed groove Sealing ring is fully contacted to form annular seal space;A drill bit is installed in hollow grouting anchor front end, and bit face is provided with slip casting water hole;Anchor Bar tail end connects filling adaptor, and filling adaptor is connected with Grouting Pipe;When slip casting, high pressure cement slurries are entered from Grouting Pipe, Jing filling adaptors flow into grouted anchor bar endoporus, then after adapter sleeve sealing function, high pressure cement slurries are transported to into another In anchor pole endoporus, chisel edge water hole is eventually passed through, after high pressure cement slurries are in spurting access aperture, to fill up rapidly drilling, From at blast pipe stream, slip casting is completed high pressure cement slurries.

There is following beneficial effect by adopting above-mentioned technical proposal, the present invention:It is hollow that the present invention solves self-drilling type Anchor pole spillage phenomenon during slip casting, also solves grouting pressure during slip casting and loses excessive problem, it is ensured that cement Packing and slurries after grout cures can be good at being filled in rock cranny, greatly improve engineering construction matter Amount.

Description of the drawings

Fig. 1 is adapter sleeve sealed structure chart.

Fig. 2 is the use state figure of this patent.

Fig. 3 is the internal structure schematic diagram of this patent.

In figure, 1- high pressure cement slurries, 2- rock mass, 3- hollow grouting anchors, 4- adapter sleeves, 5- sealed grooves, 6- rings Shape boss, 7- blast pipes, 8- filling adaptors, 9- Grouting Pipes, 10- sealing rings.

Specific embodiment

This patent is further explained below in conjunction with the accompanying drawings.But the protection domain of this patent is not limited to specific enforcement Mode.

Embodiment 1

As illustrated, a kind of Self-drilling hollow grouting anchoring-bolt 3 of this patent sealing structure of adapter sleeve 4, adapter sleeve 4 includes tubulose Body;Tubular body two ends endoporus is provided with internal thread, for connecting Self-drilling hollow grouting anchoring-bolt 3;Tubular body centre position Annular boss 6 is provided with endoporus, for the positioning of the Self-drilling hollow grouting anchoring-bolt 3 of two ends connection, the inner ring surface of annular boss 6 On be provided with sealed groove 5, for installing sealing ring 10.

After the pore-forming of rock mass 2, sealing ring 10 is installed in the sealed groove 5 of adapter sleeve 4, respectively connects at the two ends of adapter sleeve 4 A piece Self-drilling hollow grouting anchoring-bolt 3, anchor pole total length is provided with external screw thread, and two ends are provided with one section of diameter less than adapter sleeve 4 The step of the annular diameters of annular boss 6, to ensure that step can pass through the annular boss 6 of adapter sleeve 4;Two hollow grouting anchors 3 All screw and the face contact position of 4 annular boss of adapter sleeve 6, anchor pole front end is provided with 45 ° of chamfering, anchor pole Leading end chamfer with it is close Sealing ring 10 is fully contacted to form annular seal space in envelope groove 5;A drill bit is installed in the front end of hollow grouting anchor 3, and bit face is arranged There is slip casting water hole;End of anchor rod connects filling adaptor 8, and filling adaptor 8 is connected with Grouting Pipe 9;When slip casting, water under high pressure mud Liquid 1 is entered from Grouting Pipe 9, and Jing filling adaptors 8 flow into grouted anchor bar endoporus, then after the sealing function of adapter sleeve 4, by water under high pressure Slurry liquid 1 is transported in another anchor pole endoporus, eventually passes through chisel edge water hole, and high pressure cement slurries 1 are with spurting entrance In hole, after drilling is filled up rapidly, from the stream of blast pipe 7, slip casting is completed high pressure cement slurries 1.

Claims (1)

1. a kind of Self-drilling hollow grouting anchoring-bolt adapter sleeve sealing structure, is characterized in that:The adapter sleeve includes tubular body;Institute State tubular body two ends endoporus and be provided with internal thread, for connecting Self-drilling hollow grouting anchoring-bolt;Tubular body centre position it is interior Annular boss is provided with hole, for the positioning of the Self-drilling hollow grouting anchoring-bolt of two ends connection, the annular boss inner ring surface On be provided with sealed groove, for installing sealing ring.
CN201610925784.8A 2016-10-31 2016-10-31 Connecting sleeve sealing structure for self-drilling type hollow grouting anchors CN106640159A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610925784.8A CN106640159A (en) 2016-10-31 2016-10-31 Connecting sleeve sealing structure for self-drilling type hollow grouting anchors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610925784.8A CN106640159A (en) 2016-10-31 2016-10-31 Connecting sleeve sealing structure for self-drilling type hollow grouting anchors

Publications (1)

Publication Number Publication Date
CN106640159A true CN106640159A (en) 2017-05-10

Family

ID=58856723

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610925784.8A CN106640159A (en) 2016-10-31 2016-10-31 Connecting sleeve sealing structure for self-drilling type hollow grouting anchors

Country Status (1)

Country Link
CN (1) CN106640159A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2292837Y (en) * 1996-10-18 1998-09-30 铁道部第五工程局机电设备工业总公司 Drilling anchor-bolt for deep hole grouting
CN201396179Y (en) * 2009-03-31 2010-02-03 中国矿业大学 Back-resistant self-grout stopping grouting anchor
CN201581818U (en) * 2010-01-05 2010-09-15 赵明理 Coupling for high anticorrosive and high anti-leakage oil pipe
CH702595A2 (en) * 2010-01-28 2011-07-29 Kuechler Technik Ag Bohrankerdichtung and self-drilling with such Bohrankerdichtung.
CN202090850U (en) * 2011-05-18 2011-12-28 首都航天机械公司 Pipeline connecting piece between thread and conical seal surface with limited circular bead
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
CN206256918U (en) * 2016-10-31 2017-06-16 洛阳中岩工程材料有限公司 A kind of Self-drilling hollow grouting anchoring-bolt adapter sleeve sealing structure

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2292837Y (en) * 1996-10-18 1998-09-30 铁道部第五工程局机电设备工业总公司 Drilling anchor-bolt for deep hole grouting
CN201396179Y (en) * 2009-03-31 2010-02-03 中国矿业大学 Back-resistant self-grout stopping grouting anchor
CN201581818U (en) * 2010-01-05 2010-09-15 赵明理 Coupling for high anticorrosive and high anti-leakage oil pipe
CH702595A2 (en) * 2010-01-28 2011-07-29 Kuechler Technik Ag Bohrankerdichtung and self-drilling with such Bohrankerdichtung.
CN202090850U (en) * 2011-05-18 2011-12-28 首都航天机械公司 Pipeline connecting piece between thread and conical seal surface with limited circular bead
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
CN206256918U (en) * 2016-10-31 2017-06-16 洛阳中岩工程材料有限公司 A kind of Self-drilling hollow grouting anchoring-bolt adapter sleeve sealing structure

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Application publication date: 20170510

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