CN102322273A - A kind of roadway floor anchor is annotated integrated reinforcement means - Google Patents

A kind of roadway floor anchor is annotated integrated reinforcement means Download PDF

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Publication number
CN102322273A
CN102322273A CN201110137767A CN201110137767A CN102322273A CN 102322273 A CN102322273 A CN 102322273A CN 201110137767 A CN201110137767 A CN 201110137767A CN 201110137767 A CN201110137767 A CN 201110137767A CN 102322273 A CN102322273 A CN 102322273A
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China
Prior art keywords
hole
deep
grouting
anchor
anchor cable
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Pending
Application number
CN201110137767A
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Chinese (zh)
Inventor
阚甲广
张农
刘宁宁
韩昌良
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Priority to CN201110137767A priority Critical patent/CN102322273A/en
Publication of CN102322273A publication Critical patent/CN102322273A/en
Pending legal-status Critical Current

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Abstract

The present invention relates to a kind of roadway floor anchor and annotate integrated reinforcement means; Be difficult to reinforcing, the unmanageable problem of pucking to geologic anomaly band, weak broken roadway floor deep; At first a large amount of the race starched or spillages when roadway floor construction terrace prevents slip casting, and the shutoff of shallow bore hole slip casting thereafter superficial part crack forms superficial part and ends the slurry layer; And the integrality of country rock is improved in the slip casting grouting behind shaft or drift lining scope, has solved the follow-up inlet well hole problem of collapsing; Grouting Pipe and anchor cable are installed in the deep hole grouting hole of constructing then, realize in the time of the grouting reinforcement deep rock mass adopting channel-section steel, i iron etc. that the monomer anchor cable is combined into the anchor cable beam by the anchor cable full length fastening at last, effectively control the roadway floor distortion.

Description

A kind of roadway floor anchor is annotated integrated reinforcement means
Technical field
The present invention relates to improvement, the reinforcing technique of coal mine roadway base plate, especially a kind of roadway floor anchor is annotated integrated reinforcement means.
Background technology
Tunnel pucking problem is comparatively general in coal mine roadway.At present; Both at home and abroad control tunnel pucking or the method and the technology that reduce the pucking amount have release to improve the floor rocks stress state to improve floor rocks intensity etc. with reinforcing, and concrete grammar comprises: the full section method of support such as U shaped steel collapsible timbering method of support, concrete arch and arc plate of band end arch, construction base plate anchor pole method, floor grouting method, the vertical grooving control of base plate pucking method, digging tunnel, base plate both sides destressing method, loosening blasting method and Strengthening Roof control tunnel pucking method etc. are carried out in base plate tunnel two base angles.
Wherein, the floor grouting method is to improve the better method of floor rocks intensity, control pucking.When the roadway floor country rock was complete, the injected hole hole quality was good, and deep wall rock can be constructed, reinforced to Grouting Pipe; Can control pucking preferably; Yet floor grouting effect extreme difference in geologic anomaly band, weak broken, argillization tunnel, the main difficulty of existence is: geologic anomaly band, weak broken, argillization roadway floor Completion of Drilling Hole are of poor quality, after drilling rod withdraws from; Only roadway floor superficial part Completion of Drilling Hole quality is better, the deep boring hole of then collapsing.Base plate anchor pole, Grouting Pipe only can be constructed, reinforced roadway base plate superficial part, and base plate deep anchor pole, Grouting Pipe can't be constructed, and the base plate deep wall rock can not get reinforcing.The base plate bore diameter is bigger, and Grouting Pipe, anchor cable equal diameter are then less, and bore diameter and Grouting Pipe diameter, anchor cable diameter do not match, and slip casting, anchorage cable anchoring effect are relatively poor.For these problems, also there is not effective solution both at home and abroad.
Summary of the invention
In order to solve the problem that roadway floor runs in reinforce administering, the present invention proposes a kind of roadway floor anchor and annotate integrated reinforcement means, this reinforcement means is simple, be prone to construction, effective, is applicable to the jacking of floor of soft-rock tunnel.
The technical solution adopted for the present invention to solve the technical problems is: the operating procedure that this a kind of roadway floor anchor is annotated integrated reinforcement means is following:
1. at the concrete floor of roadway floor construction 0.1~0.2m,, roadway floor ends the slurry layer for providing;
2. terrace fixed after, at the dark superficial part injected hole of roadway floor construction 1.5~2.0m, array pitch is 1.5m~3.0m between the hole; After the construction of superficial part injected hole is accomplished, in the hole, put into the shallow bore hole Grouting Pipe, adopt sealing of holes such as rapid setting cement, hole packer; After sealing of hole is accomplished; Carry out slip casting through the shallow bore hole Grouting Pipe, when grouting pressure reaches 1.0~2.0Mpa, stop slip casting behind voltage stabilizing 3~5min;
3. at the construct deep injected hole of dark 5.0~6.0m of roadway floor; Array pitch is 1.5m~3.0m between the hole; In the hole, successively put into long anchor cable of 4.5~5.5m and the long deep hole grouting pipe of 3.5~4.5m; Adopt sealing of holes such as rapid setting cement, hole packer, after sealing of hole is accomplished, inject the beautiful diffusing chemical grout that waits of horse through the deep hole grouting pipe; When grouting pressure reaches 5.0~6.0Mpa, stop slip casting behind voltage stabilizing 3~5min;
4. after the slurry consolidation of deep hole grouting, adopt channel-section steel, i iron etc. to be combined into one adjacent two anchor cables, go up little pallet, lockset stretch-draw anchor cable then, the anchor cable pretightning force is 15~25Mpa;
5. along with the advance of the face, repeat above-mentioned steps 1.~4., finish until the roadway floor strengthening construction.
The first shallow bore hole slip casting that this method adopted, effectively shutoff the superficial part crack, form superficial part and end the slurry layer, guaranteed the increase of deep hole grouting pressure, the integrality of country rock is improved in the slip casting grouting behind shaft or drift lining scope, has solved the follow-up inlet well hole problem of collapsing; Deep hole grouting has increased reinforcing scope; Anchor cable and deep hole grouting pipe are put into same boring successively; Realize the anchor cable full length fastening in the time of the grouting reinforcement fragmented rock body, solved base plate deep anchor pole (rope), Grouting Pipe can't be constructed, the problem that the base plate deep wall rock can not get reinforcing.
The diameter of said superficial part injected hole and shallow bore hole Grouting Pipe and deep injected hole and deep hole grouting pipe, anchor cable matees respectively each other.
The slurries that adopt when said shallow bore hole slip casting and deep hole grouting are the beautiful chemical grout such as diffusing of cement grout or horse.
The invention has the beneficial effects as follows: this roadway floor anchor is annotated integrated reinforcement means, has effectively reinforced geologic anomaly band, weak broken roadway floor, has controlled the pucking amount, has realized the long-term stability of roadway floor; Through the grouting method of deep hole behind the first shallow bore hole, improved the integrality of country rock in the range of grouting, solved the follow-up inlet well hole problem of collapsing; Solved base plate deep anchor pole (rope), Grouting Pipe can't be constructed, the problem that the base plate deep wall rock can not get reinforcing; Be that a kind of usage degree is wide, safety, efficiently, roadway floor reinforcement means easily.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Accompanying drawing 1 is annotated the shallow bore hole slip casting sketch map of integrated reinforcement means for this a kind of roadway floor anchor.
Accompanying drawing 2 is annotated deep hole grouting, the anchor cable construction sketch map of integrated reinforcement means for this a kind of roadway floor anchor.
Among the figure, 1. tunnel, 2. terrace, 3. shallow bore hole Grouting Pipe, 4. superficial part injected hole, 5. deep hole grouting pipe, 6. anchor cable, 7. deep injected hole.
The specific embodiment
In the accompanying drawings, this a kind of roadway floor anchor operating procedure of annotating integrated reinforcement means is following:
1. the concrete floor 2 of 1 base plate construction, 0.1~0.2m in the tunnel ends the slurry layer for tunnel 1 base plate provides;
2. terrace 2 fixed after, the dark superficial part injected hole 4 of 1 base plate construction 1.5~2.0m in the tunnel, array pitch is 1.5m~3.0m between the hole; After 4 constructions of superficial part injected hole are accomplished, in the hole, put into shallow bore hole Grouting Pipe 3, adopt sealing of holes such as rapid setting cement, hole packer; After sealing of hole is accomplished; Carry out slip casting through shallow bore hole Grouting Pipe 3, when grouting pressure reaches 1.0~2.0Mpa, stop slip casting behind voltage stabilizing 3~5min;
3. the construct deep injected hole 7 of dark 5.0~6.0m of 1 base plate in the tunnel; Array pitch is 1.5m~3.0m between the hole; In the hole, successively put into long anchor cable 6 of 4.5~5.5m and the long deep hole grouting pipe 5 of 3.5~4.5m; Adopt sealing of holes such as rapid setting cement, hole packer, after sealing of hole is accomplished, inject the beautiful diffusing chemical grout that waits of horse through deep hole grouting pipe 5; When grouting pressure reaches 5.0~6.0Mpa, stop slip casting behind voltage stabilizing 3~5min;
4. after the slurry consolidation of deep hole grouting, adopt channel-section steel, i iron etc. to be combined into one adjacent two anchor cables 6, go up little pallet, lockset stretch-draw anchor cable then, anchor cable 6 pretightning forces are 15~25Mpa;
5. along with the advance of the face, repeat above-mentioned steps 1.~4., finish until the roadway floor strengthening construction.
The first shallow bore hole slip casting that this method adopted, effectively shutoff the superficial part crack, form superficial part and end the slurry layer, guaranteed the increase of deep hole grouting pressure, the integrality of country rock is improved in the slip casting grouting behind shaft or drift lining scope, has solved the follow-up inlet well hole problem of collapsing; Deep hole grouting has increased reinforcing scope; Anchor cable 6 is put into same boring successively with deep hole grouting pipe 5; Realize anchor cable 6 full length fastenings in the time of the grouting reinforcement fragmented rock body, solved base plate deep anchor pole (rope), Grouting Pipe can't be constructed, the problem that the base plate deep wall rock can not get reinforcing.
Said superficial part injected hole 4 matees respectively with the diameter of shallow bore hole Grouting Pipe 3 and deep injected hole 7 and deep hole grouting pipe 5, anchor cable 6 each other.
The slurries that adopt when said shallow bore hole slip casting and deep hole grouting are the beautiful chemical grout such as diffusing of cement grout or horse.

Claims (3)

1. a roadway floor anchor is annotated integrated reinforcement means, it is characterized in that: the operating procedure of this method is following:
1. the concrete floor (2) of (1) base plate construction 0.1~0.2m in the tunnel ends the slurry layer for tunnel (1) base plate provides;
2. terrace (2) fixed after, the dark superficial part injected hole (4) of (1) base plate construction 1.5~2.0m in the tunnel, array pitch is 1.5m~3.0m between the hole; After superficial part injected hole (4) construction is accomplished, in the hole, put into shallow bore hole Grouting Pipe (3), adopt sealing of holes such as rapid setting cement, hole packer; After sealing of hole is accomplished; Carry out slip casting through shallow bore hole Grouting Pipe (3), when grouting pressure reaches 1.0~2.0Mpa, stop slip casting behind voltage stabilizing 3~5min;
3. the construct deep injected hole (7) of dark 5.0~6.0m of (1) base plate in the tunnel; Array pitch is 1.5m~3.0m between the hole; In the hole, successively put into long anchor cable (6) of 4.5~5.5m and the long deep hole grouting pipe (5) of 3.5~4.5m; Adopt sealing of holes such as rapid setting cement, hole packer, after sealing of hole is accomplished, inject the beautiful diffusing chemical grout that waits of horse through deep hole grouting pipe (5); When grouting pressure reaches 5.0~6.0Mpa, stop slip casting behind voltage stabilizing 3~5min;
4. after the slurry consolidation of deep hole grouting, adopt channel-section steel, i iron etc. to be combined into one adjacent two anchor cables (6), go up little pallet, lockset stretch-draw anchor cable (6) then, anchor cable (6) pretightning force is 15~25Mpa;
5. along with the advance of the face, repeat above-mentioned steps 1.~4., finish until the construction of tunnel (1) jacking of floor.
2. annotate integrated reinforcement means according to the said a kind of roadway floor anchor of claim 1, it is characterized in that: the diameter of said superficial part injected hole (4) and shallow bore hole Grouting Pipe (3) and deep injected hole (7) and deep hole grouting pipe (5), anchor cable (6) matees respectively each other.
3. annotate integrated reinforcement means according to the said a kind of roadway floor anchor of claim 1, it is characterized in that: the slurries that adopt when said shallow bore hole slip casting and deep hole grouting are the beautiful chemical grout such as diffusing of cement grout or horse.
CN201110137767A 2011-05-20 2011-05-20 A kind of roadway floor anchor is annotated integrated reinforcement means Pending CN102322273A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102660948A (en) * 2012-05-30 2012-09-12 甘肃省建设投资(控股)集团总公司 Steel tube locked anchor rod construction method
CN102900446A (en) * 2012-10-23 2013-01-30 中国矿业大学 Step-by-step strengthening method by anchoring and forming hole in downward sleeve of cracking medium
CN102926774A (en) * 2012-11-20 2013-02-13 安徽理工大学 Bolting and grouting process for governing roadway floor heave
CN103089304A (en) * 2012-12-21 2013-05-08 太原理工大学 Heaving floor monitoring method
CN103089276A (en) * 2013-01-28 2013-05-08 中国矿业大学 Deep-shallow hole and high-low pressure coupling grouting technology
CN103557009A (en) * 2013-11-15 2014-02-05 山东科技大学 Row pile retaining and protecting method for preventing roadway floor heaving
CN105756689A (en) * 2016-04-21 2016-07-13 淮南矿业(集团)有限责任公司 Roadway floor reinforcing system and construction method thereof
CN106522243A (en) * 2016-10-18 2017-03-22 中铁局集团有限公司 Fissure-contained rock soil stratum prestressed anchor cable grouting and anchoring construction method
WO2017049783A1 (en) * 2015-09-21 2017-03-30 中国矿业大学 Silica sol slow infiltration reinforcing method for argillaceous soft rock
CN107965332A (en) * 2017-12-08 2018-04-27 贵州理工学院 The anti-pucking deformed bar method for protecting support of baseboard of coal mine roadway
CN109505641A (en) * 2018-12-25 2019-03-22 山东安科矿山支护技术有限公司 A kind of soft-rock tunnel bottom plate anchor pouring reinforcement method
WO2021082410A1 (en) * 2019-10-29 2021-05-06 中国矿业大学 Supporting structure and supporting method for preventing roadway floor from heaving

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102660948A (en) * 2012-05-30 2012-09-12 甘肃省建设投资(控股)集团总公司 Steel tube locked anchor rod construction method
CN102900446B (en) * 2012-10-23 2014-12-24 中国矿业大学 Step-by-step strengthening method by anchoring and forming hole in downward sleeve of cracking medium
CN102900446A (en) * 2012-10-23 2013-01-30 中国矿业大学 Step-by-step strengthening method by anchoring and forming hole in downward sleeve of cracking medium
CN102926774A (en) * 2012-11-20 2013-02-13 安徽理工大学 Bolting and grouting process for governing roadway floor heave
CN103089304A (en) * 2012-12-21 2013-05-08 太原理工大学 Heaving floor monitoring method
CN103089304B (en) * 2012-12-21 2015-03-25 太原理工大学 Heaving floor monitoring method
CN103089276A (en) * 2013-01-28 2013-05-08 中国矿业大学 Deep-shallow hole and high-low pressure coupling grouting technology
CN103089276B (en) * 2013-01-28 2015-04-29 中国矿业大学 Deep-shallow hole and high-low pressure coupling grouting technology
CN103557009A (en) * 2013-11-15 2014-02-05 山东科技大学 Row pile retaining and protecting method for preventing roadway floor heaving
WO2017049783A1 (en) * 2015-09-21 2017-03-30 中国矿业大学 Silica sol slow infiltration reinforcing method for argillaceous soft rock
CN105756689A (en) * 2016-04-21 2016-07-13 淮南矿业(集团)有限责任公司 Roadway floor reinforcing system and construction method thereof
CN106522243A (en) * 2016-10-18 2017-03-22 中铁局集团有限公司 Fissure-contained rock soil stratum prestressed anchor cable grouting and anchoring construction method
CN106522243B (en) * 2016-10-18 2018-10-09 中铁一局集团有限公司 The stratum of ground containing crack prestress anchorage cable slip casting anchoring construction method
CN107965332A (en) * 2017-12-08 2018-04-27 贵州理工学院 The anti-pucking deformed bar method for protecting support of baseboard of coal mine roadway
CN107965332B (en) * 2017-12-08 2019-05-24 贵州理工学院 The anti-pucking deformed bar method for protecting support of baseboard of coal mine roadway
CN109505641A (en) * 2018-12-25 2019-03-22 山东安科矿山支护技术有限公司 A kind of soft-rock tunnel bottom plate anchor pouring reinforcement method
WO2021082410A1 (en) * 2019-10-29 2021-05-06 中国矿业大学 Supporting structure and supporting method for preventing roadway floor from heaving

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Application publication date: 20120118