CN200996296Y - High-strength decompressing slip-casting rockbolt - Google Patents

High-strength decompressing slip-casting rockbolt Download PDF

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Publication number
CN200996296Y
CN200996296Y CN 200720033583 CN200720033583U CN200996296Y CN 200996296 Y CN200996296 Y CN 200996296Y CN 200720033583 CN200720033583 CN 200720033583 CN 200720033583 U CN200720033583 U CN 200720033583U CN 200996296 Y CN200996296 Y CN 200996296Y
Authority
CN
China
Prior art keywords
rod
strength
rock
anchor bar
grouted anchor
Prior art date
Application number
CN 200720033583
Other languages
Chinese (zh)
Inventor
王连国
吴宇
李海亮
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 CN 200720033583 priority Critical patent/CN200996296Y/en
Application granted granted Critical
Publication of CN200996296Y publication Critical patent/CN200996296Y/en

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Abstract

The utility model discloses a high-strength pressure relieving and grouting anchor rod, and is characterized in that the anchor rod comprises a high-strength seamless steel pipe rod body (3); a twist anchoring head (1) is provided at the front part of the rod body (3), and a resin cartridge baffle plate (2) is arranged between the anchoring head (1) and the rod body (3), and the tail end of the rod body (3) is equipped with a pallet (5), a pressure relief pipe (7), a carrier ring and a nut (9).

Description

High-strength release grouted anchor bar
Technical field
The utility model relates to high-strength release grouted anchor bar, is particularly useful for the supporting of mine, tunnel, the heavily stressed breaking surrounding rock of underground construction and dead-soft rock stratum.
Background technology
Along with the continuous development of coal in China industry, many mining areas are all more and more running into the weak broken rock stratum in varying degrees, and this class rock stratum has characteristics such as expansion, rheology, and degree of consolidation is poor, and this makes soft-rock tunnel be regarded as the difficult point of coal mine support always.
At present, China's soft-rock tunnel mainly adopts the metal collapsible timbering, and it is huge to consume steel.In order to save steel, reduce support cost, relevant in recent years mining area various types of bolt supports of test of many times once in soft-rock tunnel, as: support forms such as the anchor pole that can stretch, assembled bolt and anchor pole truss occur in succession.Yet the loose range of country rock of soft rock roadway is bigger, and rock mass strength is low, uses bolt support to be difficult to make broken sillar to be in pressured state fully and to form built-up arch merely.Compare with block arch, metallic support support form, the prime advantage of bolt support is the supporting country rock of active in time, but the anchored force of bolt support depends on the mechanical property of institute's anchor rock mass to a great extent, at soft-rock tunnel, the anchor difference of country rock is to cause the major reason that anchor-holding force of anchor bolt is low and lost efficacy.The bolt-grouting support technology is utilized anchor pole inner chamber double as Grouting Pipe, anchor pole and slip casting are united two into one, both grouting and reinforcing country rock, improved the self-supporting ability of country rock, put forth effort the basis reliably for anchor pole provides again, be the effective way that solves the soft rock roadway support problem.Existing bolt-grouting support technology at first will be taked the capable initial support of anchor spirt in practice of construction, make country rock fully release for some time, and the country rock joint reaches full growth, and then adopts grouted anchor bar to carry out bolt-grouting support, reinforces country rock and realizes permanent support.So the more complicated of constructing, support cost is higher, does not also give full play to the effect of the intensity of grouted anchor bar self.Because tunnel pressure from surrounding rock when just digging is bigger with distortion, if adopt present grouted anchor bar directly to carry out initial support, when surrouding rock deformation, grouted anchor bar is easy to lose efficacy.
Summary of the invention
The purpose of this utility model is to overcome the prior art weak point, provide a kind of compact conformation rationally, easy construction, lower, the effective high-strength release grouted anchor bar of cost.
For achieving the above object, high-strength release grouted anchor bar of the present utility model comprises the high-strength seamless steel pipe body of rod, and the front portion of the body of rod is provided with the twisted shape anchorage head, be provided with a resin explosive roll baffle plate between the anchorage head and the body of rod, body of rod afterbody is sequentially with pallet, relief tube, packing ring and the nut that is fixed.
The described body of rod upwards be interval with in length and breadth be crossed as mutually 90 ° penetrate the slurry hole; Described relief tube is a hollow bushing that heave at the middle part.
High-strength release grouted anchor bar of the present utility model, take into full account the release and the grouting and reinforcing in tunnel, the two is organically combined, with the hollow relief tube is that release device and high-strength seamless steel pipe are made the slip casting device, at first be that relief tube is flattened when deformation of the surrounding rock in tunnel, so just avoid the inefficacy of body of rod anchored end.After the surrouding rock deformation, stress in the country rock is concentrated and is obtained discharging, country rock joint and cranny development, utilize grouted anchor bar slip casting that slurries can fully be injected this moment, with integral body of the glued one-tenth of breaking surrounding rock, and solidifying of slurries also can make grouted anchor bar realize full length fastening around the body of rod, thereby keeps the tunnel long-term stability.Reduced the operation of using common bolt, accelerated roadway construction, reduced support cost, technology is simple, and is easy for installation, can accelerate the tunnel drilling depth, can reduce support cost greatly again.
Description of drawings
Accompanying drawing is the utility model structure chart.
Among the figure: 1-twisted shape anchorage head; 2-resin explosive roll baffle plate; The 3-body of rod; 4-penetrates the slurry hole; The 5-pallet; The 6-iron washer; The 7-relief tube; The 8-plastic washer; The 9-nut.
The specific embodiment
Below in conjunction with accompanying drawing an embodiment of the present utility model is further described:
Shown in the accompanying drawing, the utility model adopts high-strength seamless steel pipe to make the body of rod 3, is drilled with on the body of rod 3 to penetrate slurry hole 4, and pitch-row is 120~180mm, and each hole that the body of rod 3 makes progress in length and breadth is crossed as 90 °, is convenient to slurries and can injects body of rod rock mass all around.Be welded with one section twisted shape anchorage head 1 before the body of rod 3, anchorage head 1 adopts steel plate to make, to improve anchoring effect.Be provided with a resin explosive roll baffle plate 2 between the anchorage head 1 and the body of rod 3, be used to prevent under the resin flow of anchored end, reduce anchoring effect.The tail end of the body of rod 3 is equipped with pallet 5 and the nut 9 that is fixed, and is provided with relief tube 7 between pallet 5 and the nut 9, and relief tube 7 is a hollow bushing, and heave at the middle part, is beneficial to distortion, and relief tube 7 two ends respectively are provided with an iron washer 6 and make relief tube 7 pressurized equilibriums.Add between nut 9 and the iron washer 6 plastic washer 8 with prevent since the friction excessive generation from locked phenomenon.

Claims (3)

1, high-strength release grouted anchor bar, it is characterized in that: it comprises the high-strength seamless steel pipe body of rod (3), the front portion of the body of rod (3) is provided with twisted shape anchorage head (1), be provided with a resin explosive roll baffle plate (2) between the anchorage head (1) and the body of rod (3), the body of rod (3) afterbody is sequentially with pallet (5), relief tube (7), packing ring and the nut (9) that is fixed.
2, according to right 1 described high-strength release grouted anchor bar, it is characterized in that: the described body of rod (3) upwards be interval with in length and breadth be crossed as mutually 90 ° penetrate the slurry hole (4).
3, according to right 1 described high-strength release grouted anchor bar, it is characterized in that: described relief tube (7) is a hollow bushing that heave at the middle part.
CN 200720033583 2007-01-11 2007-01-11 High-strength decompressing slip-casting rockbolt CN200996296Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200720033583 CN200996296Y (en) 2007-01-11 2007-01-11 High-strength decompressing slip-casting rockbolt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200720033583 CN200996296Y (en) 2007-01-11 2007-01-11 High-strength decompressing slip-casting rockbolt

Publications (1)

Publication Number Publication Date
CN200996296Y true CN200996296Y (en) 2007-12-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200720033583 CN200996296Y (en) 2007-01-11 2007-01-11 High-strength decompressing slip-casting rockbolt

Country Status (1)

Country Link
CN (1) CN200996296Y (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101943014A (en) * 2010-08-10 2011-01-12 中国科学院力学研究所 Displacement release type anchor head device
CN102003194A (en) * 2010-10-30 2011-04-06 中国矿业大学 Rapid installation process of resin anchor bar and device thereof
CN102704969A (en) * 2012-06-25 2012-10-03 中国矿业大学 Recoverable anchor rod for drilling, anchoring and grouting and supporting method thereof
CN102733836A (en) * 2012-07-05 2012-10-17 大同煤矿集团有限责任公司 Roadway support method for fully mechanized caving mining of weak extra-thick coal seam
CN103643977A (en) * 2013-11-21 2014-03-19 中国矿业大学 Full-anchor partition pressure transferring grouting anchor rod and application method thereof
CN104895583A (en) * 2015-04-28 2015-09-09 河南理工大学 Tunnel surrounding rock control technology combining pressure relief and slip-casting reinforcement
CN105422130A (en) * 2014-06-08 2016-03-23 衢州市优德工业设计有限公司 Method for regulating supporting pressure to carry out roadway surrounding rock supporting
CN108397219A (en) * 2018-02-27 2018-08-14 山东科技大学 Mining slip casting prestressed anchor and its application method
CN109944619A (en) * 2019-04-15 2019-06-28 辽宁工程技术大学 A kind of Support Method for high ground stress soft rock stress tunnel

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101943014A (en) * 2010-08-10 2011-01-12 中国科学院力学研究所 Displacement release type anchor head device
CN101943014B (en) * 2010-08-10 2012-07-25 中国科学院力学研究所 Displacement release type anchor head device
CN102003194A (en) * 2010-10-30 2011-04-06 中国矿业大学 Rapid installation process of resin anchor bar and device thereof
CN102003194B (en) * 2010-10-30 2014-01-15 中国矿业大学 Rapid installation process of resin anchor bar and device thereof
CN102704969A (en) * 2012-06-25 2012-10-03 中国矿业大学 Recoverable anchor rod for drilling, anchoring and grouting and supporting method thereof
CN102704969B (en) * 2012-06-25 2014-08-20 中国矿业大学 Recoverable anchor rod for drilling, anchoring and grouting and supporting method thereof
CN102733836A (en) * 2012-07-05 2012-10-17 大同煤矿集团有限责任公司 Roadway support method for fully mechanized caving mining of weak extra-thick coal seam
CN103643977A (en) * 2013-11-21 2014-03-19 中国矿业大学 Full-anchor partition pressure transferring grouting anchor rod and application method thereof
CN105422130A (en) * 2014-06-08 2016-03-23 衢州市优德工业设计有限公司 Method for regulating supporting pressure to carry out roadway surrounding rock supporting
CN105422130B (en) * 2014-06-08 2017-06-13 衢州市优德工业设计有限公司 It is a kind of to adjust the method that supporting pressure carries out supporting roadway surrounding rock
CN104895583A (en) * 2015-04-28 2015-09-09 河南理工大学 Tunnel surrounding rock control technology combining pressure relief and slip-casting reinforcement
CN108397219A (en) * 2018-02-27 2018-08-14 山东科技大学 Mining slip casting prestressed anchor and its application method
CN109944619A (en) * 2019-04-15 2019-06-28 辽宁工程技术大学 A kind of Support Method for high ground stress soft rock stress tunnel

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20071226

Termination date: 20160111