CN104481551A - Supporting method for carboniferous soft coal seam - Google Patents

Supporting method for carboniferous soft coal seam Download PDF

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Publication number
CN104481551A
CN104481551A CN201410647627.6A CN201410647627A CN104481551A CN 104481551 A CN104481551 A CN 104481551A CN 201410647627 A CN201410647627 A CN 201410647627A CN 104481551 A CN104481551 A CN 104481551A
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CN
China
Prior art keywords
arranging
coal seam
bottom part
carboniferous
supporting method
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.)
Granted
Application number
CN201410647627.6A
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Chinese (zh)
Other versions
CN104481551B (en
Inventor
于斌
陈旭忠
杨智文
张贵平
刘兴华
薛厚
李奇才
王茂江
付茂全
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Datong Coal Mine Group Co Ltd
Original Assignee
Datong Coal Mine Group Co Ltd
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Filing date
Publication date
Application filed by Datong Coal Mine Group Co Ltd filed Critical Datong Coal Mine Group Co Ltd
Priority to CN201410647627.6A priority Critical patent/CN104481551B/en
Publication of CN104481551A publication Critical patent/CN104481551A/en
Application granted granted Critical
Publication of CN104481551B publication Critical patent/CN104481551B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04—Lining with building materials
    • E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14—Lining predominantly with metal
    • E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00—Setting anchoring-bolts

Abstract

The invention specifically provides a supporting method for a carboniferous soft coal seam, and aims at solving the problem that the existing permanent support for the soft coal seam is difficult to construct and influences the excavation. The method comprises the steps of a, performing temporary support through phi 22 full-length threaded steel anchoring rod lengthened anchor; b, arranging 24 phi 36*2m round steel needles to pass through the soft rock layer to fix the loosened rock; c, drilling holes in a top plate to drain water, and arranging a U29 type arched steel bracket to guide all water into a drainage channel for comprehensive treatment; d, integrally pouring concrete into the U29 type arched steel bracket, and constructing a drilling hole being 2m in width at every 1m in the bottom part so as to release the pressure from a bottom plate; e, arranging a cross beam between the bottom parts of the U29 type arched steel bracket. With the adoption of the method, the displacement deformation of a shaft in the soft rock section can be controlled, and the treatment processes such as arranging an anchoring rod in the bottom part, grouting to the bottom part, and springing blasting can be saved.

Description

Carboniferous System weak seam supporting method
Technical field
The present invention relates to underground coal mine supporting method, be specially a kind of Carboniferous System weak seam supporting method.
Background technology
There is a large amount of high inclination-angle weak seam in mine, fault throw is large, and basement rock buries shallow, and cranny development is many, accepts Atmospheric precipitation and infiltrates, and makes casing in field with "nine squares" moisture abundant.Because the water yield in district is large, centrifugation rock stratum, mud stone, incompetent bed are many, and whole roadway surrounding rock convergent deformation when meeting water is violent, stability reduces, and causes execution conditions complicated, roadway support difficulty, driving speed is slow, and safety can not get ensureing, need carry out supporting.
At present, adopt permanent support, the mode being specially employing anchor shaft anchor cable+net+whitewashing carries out supporting, and shaft construction is very difficult, has a strong impact on shaft excavation more.
Summary of the invention
The present invention adopts permanent support to there is the problem of constructional difficulties impact driving to solve existing weak seam, provides a kind of Carboniferous System weak seam supporting method.
The present invention adopts following technical scheme to realize: Carboniferous System weak seam supporting method, adopts following steps to realize: the total length twisted steel anchor rod of a, employing Φ 22 lengthens anchor and carries out temporary lining; The round steel of b, employing 24 Φ 36 × 2m is draw point, penetrates incompetent bed and fixes unconsolidated rock; C, top board perforating discharge water, take U29 type steel arch, and water is all introduced the escape canal comprehensive regulation; D, in U29 type steel arch integrated poured concrete, and to construct the dark boring of a 2m every 1m in bottom, release Bottom Pressure; Crossbeam is provided with between bottom e, U29 type steel arch.
This support pattern by adding crossbeam and integrated poured, the effectively prevention two pucking problems of helping pressure shift-in to cause; Simultaneously by boring release pressure, the generation of preventing secondary pucking phenomenon, overcomes existing weak seam and adopts permanent support to there is the problem of constructional difficulties impact driving.
The support pattern that the present invention adopts effectively reduces the rate of strain of country rock, control the displacement deformation amount of pit shaft in soft rock section, eliminate base plate and beat the improvement operations such as anchor pole, floor grouting and pot hole blasting, the while of cost-effective, improve drivage efficiency, there is simple, the easy to operate and advantage that cost is low of technique.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1-total length twisted steel anchor rod, 2-draw point, 3-U29 type steel arch, 4-crossbeam.
Detailed description of the invention
Carboniferous System weak seam supporting method, adopts following steps to realize: the total length twisted steel anchor rod 1 of a, employing Φ 22 lengthens anchor and carries out temporary lining; The round steel of b, employing 24 Φ 36 × 2m is draw point 2, penetrates incompetent bed and fixes unconsolidated rock; C, top board perforating discharge water, take U29 type steel arch 3, and water is all introduced the escape canal comprehensive regulation; D, in U29 type steel arch 3 integrated poured concrete, and to construct the dark boring of a 2m every 1m in bottom, release Bottom Pressure; Crossbeam 4 is provided with between bottom e, U29 type steel arch 3.

Claims (1)

1. a Carboniferous System weak seam supporting method, is characterized in that: adopt following steps to realize: the total length twisted steel anchor rod (1) of a, employing Φ 22 lengthens anchor and carries out temporary lining; The round steel of b, employing 24 Φ 36 × 2m is draw point (2), penetrates incompetent bed and fixes unconsolidated rock; C, top board perforating discharge water, take U29 type steel arch (3), and water is all introduced the escape canal comprehensive regulation; D, in U29 type steel arch (3) integrated poured concrete, and to construct the dark boring of a 2m every 1m in bottom, release Bottom Pressure; E, U29 type steel arch (3) is provided with crossbeam (4) between bottom.
CN201410647627.6A 2014-11-17 2014-11-17 Carboniferous System weak seam method for protecting support Active CN104481551B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410647627.6A CN104481551B (en) 2014-11-17 2014-11-17 Carboniferous System weak seam method for protecting support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410647627.6A CN104481551B (en) 2014-11-17 2014-11-17 Carboniferous System weak seam method for protecting support

Publications (2)

Publication Number Publication Date
CN104481551A true CN104481551A (en) 2015-04-01
CN104481551B CN104481551B (en) 2016-08-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410647627.6A Active CN104481551B (en) 2014-11-17 2014-11-17 Carboniferous System weak seam method for protecting support

Country Status (1)

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CN (1) CN104481551B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104895580A (en) * 2015-05-14 2015-09-09 张晓德 Soft rock roadway surrounding rock self-support method and support stirring injection drilling machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4187037A (en) * 1977-03-03 1980-02-05 Rudolf Seiz Wall supporting arrangement, especially for supporting mine gallery walls
CN102200018A (en) * 2011-05-10 2011-09-28 湖南省交通规划勘察设计院 Bearing structure for reinforcing tunnel
CN102562093A (en) * 2012-02-21 2012-07-11 山东盛大矿业股份有限公司 Full-length anchoring supporting method with intensive resin anchor rod and anchor-shotcrete net
CN203321541U (en) * 2013-06-25 2013-12-04 淮北市平远软岩支护工程技术有限公司 Soft rock roadway supporting device
CN203742612U (en) * 2014-03-12 2014-07-30 淮南矿业(集团)有限责任公司 Rapid construction supporting system for deep coal mine roadway with weak and broken surrounding rock

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4187037A (en) * 1977-03-03 1980-02-05 Rudolf Seiz Wall supporting arrangement, especially for supporting mine gallery walls
CN102200018A (en) * 2011-05-10 2011-09-28 湖南省交通规划勘察设计院 Bearing structure for reinforcing tunnel
CN102562093A (en) * 2012-02-21 2012-07-11 山东盛大矿业股份有限公司 Full-length anchoring supporting method with intensive resin anchor rod and anchor-shotcrete net
CN203321541U (en) * 2013-06-25 2013-12-04 淮北市平远软岩支护工程技术有限公司 Soft rock roadway supporting device
CN203742612U (en) * 2014-03-12 2014-07-30 淮南矿业(集团)有限责任公司 Rapid construction supporting system for deep coal mine roadway with weak and broken surrounding rock

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104895580A (en) * 2015-05-14 2015-09-09 张晓德 Soft rock roadway surrounding rock self-support method and support stirring injection drilling machine
CN104895580B (en) * 2015-05-14 2017-03-01 张晓德 A kind of autologous method for protecting support of country rock of soft rock roadway and supporting are with stirring note rig

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