CN105257325A - Anchor rod anchoring device for surrounding rock of roadway and anchoring method of anchor rod anchoring device - Google Patents

Anchor rod anchoring device for surrounding rock of roadway and anchoring method of anchor rod anchoring device Download PDF

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Publication number
CN105257325A
CN105257325A CN201510733660.5A CN201510733660A CN105257325A CN 105257325 A CN105257325 A CN 105257325A CN 201510733660 A CN201510733660 A CN 201510733660A CN 105257325 A CN105257325 A CN 105257325A
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CN
China
Prior art keywords
anchoring
hole
anchoring agent
anchor rod
agent
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201510733660.5A
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Chinese (zh)
Inventor
张京泉
杨绪军
马洪涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiezhuang Coal Mine Xinwen Mining Industry Group Co Ltd
Original Assignee
Xiezhuang Coal Mine Xinwen Mining Industry Group Co Ltd
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 Xiezhuang Coal Mine Xinwen Mining Industry Group Co Ltd filed Critical Xiezhuang Coal Mine Xinwen Mining Industry Group Co Ltd
Priority to CN201510733660.5A priority Critical patent/CN105257325A/en
Publication of CN105257325A publication Critical patent/CN105257325A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an anchor rod anchoring device for a surrounding rock of a roadway and an anchoring method of the anchor rod anchoring device. An anchoring blind hole is formed in the surrounding rock; an anchor rod penetrates through the anchoring blind hole; the anchoring blind hole comprises a first hole section, a second hole section and a third hole section which extend outwards from the bottom; a resin anchoring agent is arranged between the first hole section and the anchor rod; a cement anchoring agent is arranged between the second hole section and the anchor rod; a sealing head is arranged inside the third hole section. According to the invention, the resin anchoring agent is matched with the cement anchoring agent by sections to enable the anchor rod to realize whole-length anchoring, so that the stability of the surrounding rock is improved, and the displacement and displacement speed of the surface of the roadway are reduced; besides, the mounting resistance of the anchor rod can be reduced through the adoption of the cement anchoring agent, so that the adjustable and controllable solidification speed of the resin anchoring agent is realized; moreover, the anchoring blind hole is sealed by adopting the sealing head to avoid leakage of cement slurry, so that the fact that the anchoring area is filled up with slurry is guaranteed, and the overall supporting effect of anchoring is improved.

Description

A kind of anchor rod anchored device for roadway surrounding rock and anchoring process thereof
Technical field
The present invention relates to the full anchor technical field of construction of coal mine roadway, particularly relate to a kind of anchor rod anchored device for roadway surrounding rock.
Background technology
At present, tunnel adopts end anchorage form mostly, and owing to there is supporting crack between end anchorage and bolthole, in rock mass stress deformation process, one is that broken the rising of country rock can cause rock stratum to be slided, and produces stress and shears, and then cause the body of rod to be subject to shear failure; Two is in the middle of country rock after absciss layer, and action of pulling stress, on pallet, causes whole bolt support to be lost efficacy after pallet fracture.
Summary of the invention
The present invention mainly solves technical problem existing in prior art, thus provides the anchor rod anchored device for roadway surrounding rock and anchoring process thereof that a kind of anchoring effect is good, the stability of country rock is high.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:
Anchor rod anchored device for roadway surrounding rock provided by the invention, this country rock offers anchoring blind hole, anchor pole is equipped with in described anchoring blind hole, described anchoring blind hole comprises the outward extending first to the 3rd hole section from bottom, resin anchoring agent is provided with between described first hole section and described anchor pole, be provided with cement anchoring agent between described second hole section and described anchor pole, in described 3rd hole section, be provided with end socket.
Further, the resin anchoring agent in described first hole section comprises adjacent middling speed resin anchoring agent and slow resin anchoring agent, the bottom of the contiguous described anchoring blind hole of described middling speed resin anchoring agent.
Further, the slow resin anchoring agent of described sealing employing 1/3 length is made.
Further, described anchor pole is full thread steel anchor rod.
Further, the hardening time of described middling speed resin anchoring agent is respectively 10-20 minute, and the hardening time of described slow resin anchoring agent is respectively 30-60 minutes.
Anchoring process of the present invention is as follows:
(1), middling speed resin anchoring agent is sent to the bottom of anchoring blind hole, and then sends into slow resin anchoring agent;
(2) to rub with the hands each cement anchoring agent, pinch inspection, off qualityly to scrap immediately; Qualified cement anchoring agent is immersed in water, about soak time 30s;
(4) the second hole section, by cement anchoring agent is delivered to, and with big gun bar by the cement anchoring agent powder stick tamping in the second hole section.
(5), with pneumatic anchor head connecting bolt installer makes anchor pole advance, and fully stirs in the second hole fragment position, is advanced by anchor pole when feeling to stir light non-resistance again, and when stirring bottom resin anchoring agent, rotational time is no less than 40s;
(6), at the 3rd hole Duan Chu, make end socket with the slow resin anchoring agent of 1/3 length and anchoring blind hole is sealed.
Beneficial effect of the present invention is: use resin anchoring agent to coordinate cement anchoring agent to make anchor pole achieve full length fastening by segmentation, which raises the stability of country rock, reduce lane surface displacement amount and velocity of displacement, and adopt cement anchoring agent can decrease rockbolt installation resistance, thus the setting rate realizing resin anchoring agent is adjustable, controlled.Meanwhile, by adopting end socket to seal anchoring blind hole, which obviating cement grout and revealing, ensure that the filling of anchorage zone slurries is closely knit, improve anchoring whole supporting effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the anchor rod anchored device for roadway surrounding rock of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
Consult shown in Fig. 1, anchor rod anchored device for roadway surrounding rock of the present invention, this country rock 1 offers anchoring blind hole 2, anchor pole 3 is equipped with in anchoring blind hole 2, anchoring blind hole 2 comprises the outward extending first to the 3rd hole section (4-6) from bottom, be provided with resin anchoring agent 7 between first hole section 4 and anchor pole 3, between the second hole section 5 and anchor pole 3, be provided with cement anchoring agent 8, in the 3rd hole section 6, be provided with end socket 9.The present invention uses resin anchoring agent 7 to coordinate cement anchoring agent 8 to make anchor pole 3 achieve full length fastening by segmentation, which raises the stability of country rock, reduce lane surface displacement amount and velocity of displacement, and adopt cement anchoring agent 8 can decrease anchor pole 3 and resistance is installed, thus the setting rate realizing resin anchoring agent 7 is adjustable, controlled.Meanwhile, by adopting end socket 9 pairs of anchoring blind holes 2 to seal, which obviating cement grout and revealing, ensure that the filling of anchorage zone slurries is closely knit, improve anchoring whole supporting effect.
Concrete, in order to control the anchoring time of setting of each section of anchor pole 3, reduce stress deformation.Resin anchoring agent 7 in first hole section 4 comprises adjacent middling speed resin anchoring agent 10 and slow resin anchoring agent 11, the bottom of the contiguous anchoring blind hole 2 of middling speed resin anchoring 10 doses.The hardening time of middling speed resin anchoring agent 10 is respectively 10-20 minute, and the hardening time of slow resin anchoring agent 11 is respectively 30-60 minutes.
Concrete, conveniently draw materials, reduce costs, sealing 9 adopts the slow resin anchoring agent 11 of 1/3 length to be made.And in the present invention, in order to ensure the intensity of anchor pole 3, anchor pole 3 is full thread steel anchor rod or high strength anchor bar.
Implementation process of the present invention is as follows:
(1), middling speed resin anchoring agent 10 is sent to the bottom of anchoring blind hole 2, and then sends into slow resin anchoring agent 11;
(2) to rub with the hands each cement anchoring agent 8, pinch inspection, off qualityly to scrap immediately; Qualified cement anchoring agent 8 is immersed in water, about soak time 30s;
(4) the second hole section 5, by cement anchoring agent 8 is delivered to, and with big gun bar by the cement anchoring agent 8 powder stick tamping in the second hole section 5.
(5), with pneumatic anchor head connecting bolt installer makes anchor pole 3 advance, and fully stirs, advanced by anchor pole 3 when feeling to stir light non-resistance again in the second hole section 5 position, and when stirring bottom resin anchoring agent 7, rotational time is no less than 40s;
(6), at the 3rd hole section 6 place, make end socket 9 pairs of anchoring blind holes 2 with the slow resin anchoring agent 11 of 1/3 length and seal.
Above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any change of expecting without creative work or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should limit with claims is as the criterion.

Claims (6)

1. the anchor rod anchored device for roadway surrounding rock, this country rock (1) offers anchoring blind hole (2), anchor pole (3) is equipped with in described anchoring blind hole (2), it is characterized in that: described anchoring blind hole (2) comprises the outward extending first to the 3rd hole section (4-6) from bottom, resin anchoring agent (7) is provided with between described first hole section (4) and described anchor pole (3), cement anchoring agent (8) is provided with between described second hole section (5) and described anchor pole (3), end socket (9) is provided with in described 3rd hole section (6).
2. as claimed in claim 1 for the anchor rod anchored device of roadway surrounding rock, it is characterized in that: the resin anchoring agent (7) in described first hole section (4) comprises adjacent middling speed resin anchoring agent (10) and slow resin anchoring agent (11), the bottom of the contiguous described anchoring blind hole (2) of described middling speed resin anchoring (10) agent.
3., as claimed in claim 2 for the anchor rod anchored device of roadway surrounding rock, it is characterized in that: described sealing (9) adopts the slow resin anchoring agent of 1/3 length (11) to be made.
4., as claimed in claim 3 for the anchor rod anchored device of roadway surrounding rock, it is characterized in that: described anchor pole (3) is full thread steel anchor rod.
5. the anchor rod anchored device for roadway surrounding rock as described in any one of claim 2-4, it is characterized in that: the hardening time of described middling speed resin anchoring agent (10) is respectively 10-20 minute, and the hardening time of described slow resin anchoring agent (11) is respectively 30-60 minutes.
6. an anchoring process for anchor rod anchored device as claimed in claim 1, is characterized in that,
(1), middling speed resin anchoring agent is sent to the bottom of anchoring blind hole, and then sends into slow resin anchoring agent;
(2) to rub with the hands each cement anchoring agent, pinch inspection, off qualityly to scrap immediately; Qualified cement anchoring agent is immersed in water, about soak time 30s;
(4) the second hole section, by cement anchoring agent is delivered to, and with big gun bar by the cement anchoring agent powder stick tamping in the second hole section.
(5), with pneumatic anchor head connecting bolt installer makes anchor pole advance, and fully stirs in the second hole fragment position, is advanced by anchor pole when feeling to stir light non-resistance again, and when stirring bottom resin anchoring agent, rotational time is no less than 40s;
(6), at the 3rd hole Duan Chu, make end socket with the slow resin anchoring agent of 1/3 length and anchoring blind hole 2 is sealed.
CN201510733660.5A 2015-11-02 2015-11-02 Anchor rod anchoring device for surrounding rock of roadway and anchoring method of anchor rod anchoring device Pending CN105257325A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510733660.5A CN105257325A (en) 2015-11-02 2015-11-02 Anchor rod anchoring device for surrounding rock of roadway and anchoring method of anchor rod anchoring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510733660.5A CN105257325A (en) 2015-11-02 2015-11-02 Anchor rod anchoring device for surrounding rock of roadway and anchoring method of anchor rod anchoring device

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Publication Number Publication Date
CN105257325A true CN105257325A (en) 2016-01-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109441510A (en) * 2018-12-28 2019-03-08 常州工学院 A kind of impact tunnel segmentation anchoring anchor cable

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101949294A (en) * 2010-08-13 2011-01-19 山西潞安环保能源开发股份有限公司常村煤矿 Prestressed full-length anchorage support method
CN103161484A (en) * 2013-03-22 2013-06-19 中国矿业大学 Pasty fluid fixed-length anchoring supporting method
CN103613322A (en) * 2013-11-22 2014-03-05 新汶矿业集团有限责任公司鄂庄煤矿 Composite resin anchoring agent and anchoring method thereof
CN104500115A (en) * 2014-12-15 2015-04-08 王振伟 Pre-stress full-length anchoring rock bolt retaining and protecting method
CN204299598U (en) * 2014-11-17 2015-04-29 神华集团有限责任公司 A kind of anchor pole of full length fastening
CN205172610U (en) * 2015-11-02 2016-04-20 新汶矿业集团有限责任公司协庄煤矿 A stock anchor for tunnel country rock

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101949294A (en) * 2010-08-13 2011-01-19 山西潞安环保能源开发股份有限公司常村煤矿 Prestressed full-length anchorage support method
CN103161484A (en) * 2013-03-22 2013-06-19 中国矿业大学 Pasty fluid fixed-length anchoring supporting method
CN103613322A (en) * 2013-11-22 2014-03-05 新汶矿业集团有限责任公司鄂庄煤矿 Composite resin anchoring agent and anchoring method thereof
CN204299598U (en) * 2014-11-17 2015-04-29 神华集团有限责任公司 A kind of anchor pole of full length fastening
CN104500115A (en) * 2014-12-15 2015-04-08 王振伟 Pre-stress full-length anchoring rock bolt retaining and protecting method
CN205172610U (en) * 2015-11-02 2016-04-20 新汶矿业集团有限责任公司协庄煤矿 A stock anchor for tunnel country rock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109441510A (en) * 2018-12-28 2019-03-08 常州工学院 A kind of impact tunnel segmentation anchoring anchor cable

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