CN107893670A - A kind of anti-wall caving retaining wall supporting construction in comprehensive pick face - Google Patents
A kind of anti-wall caving retaining wall supporting construction in comprehensive pick face Download PDFInfo
- Publication number
- CN107893670A CN107893670A CN201711311290.1A CN201711311290A CN107893670A CN 107893670 A CN107893670 A CN 107893670A CN 201711311290 A CN201711311290 A CN 201711311290A CN 107893670 A CN107893670 A CN 107893670A
- Authority
- CN
- China
- Prior art keywords
- fan
- retaining wall
- shaped wire
- supporting construction
- pick face
- 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
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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
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/025—Grouting with organic components, e.g. resin
Abstract
The invention discloses a kind of comprehensive anti-wall caving retaining wall supporting construction in pick face, and it includes two fan-shaped wire nettings（2）, two fan-shaped wire nettings（2）It is symmetrical to be fixed at left and right sides of tunnel；The fan-shaped wire netting（2）By reinforcing bar（1）It is welded into；Prior art colliery Zong Jue faces are solved due to not using the retaining wall supporting construction security reliability of retaining wall supporting or use poor, cause comprehensive pick face coal (rock) wall side falling accident the technical problem such as to happen occasionally.
Description
Technical field
The invention belongs to underground coal mine support technology, more particularly to a kind of anti-wall caving retaining wall supporting construction in comprehensive pick face.
Background technology
In general, the comprehensive pick face technological process of production of underground coal mine is：Preparation → development machine coal cutting before start, coaling, transport
Coal → haul, cash floating clearly → taps → gib → retaining wall supporting → permanent support → subsequent cycle.Due to Zong Jue lanes
Road cross dimensions is generally large, under the influence of the factors such as down-hole mining disturbance, causes the oriented free face extruding of coal (rock) body of meeting head on
The tendentiousness dished out, it is easy to occur because coal (rock) wall flaps side injures worker by a crashing object or damages the security incident of equipment, particularly with
The bord-up fully mechanized workface that those clear height are larger or inclination angle is larger.Therefore, forever propped up in comprehensive pick face for guarantee worker
Job safety during shield, seek a kind of comprehensive pick face retaining wall supporting construction simple in construction, easy for construction, safe and reliable and just seem outstanding
To be important.
At present, many retaining wall supporting construction security reliability of the comprehensive pick face due to not using retaining wall supporting or use in underground
It is poor, cause comprehensive pick face coal (rock) wall side falling accident to happen occasionally.
The content of the invention：
The technical problem to be solved in the present invention：There is provided a kind of comprehensive pick face anti-wall caving retaining wall supporting construction, to solve prior art coal
The comprehensive pick face of ore deposit is poor due to not using the retaining wall supporting construction security reliability of retaining wall supporting or use, causes comprehensive pick face coal
(rock) wall side falling accident such as happens occasionally at the technical problem.
Technical solution of the present invention：
A kind of anti-wall caving retaining wall supporting construction in comprehensive pick face, it includes two fan-shaped wire nettings, and two fan-shaped wire nettings are symmetrically fixed
At left and right sides of tunnel；The fan-shaped wire netting by reinforcement welding into.
The size of mesh opening of fan-shaped wire netting is 100mm × 100mm；The framework of fan-shaped wire netting uses φ 22mm steel bar weldings
Connect.
Fan-shaped wire netting is indulged muscle twisted steel anchor rod by left-handed nothing and is fixed on rib or palisades；Each fan-shaped metal Netcom
The vertical muscle twisted steel anchor rod of two left-handed nothings is crossed to be fixed on rib or palisades.
Every left-handed nothing indulges muscle twisted steel anchor rod and carries out end anchorage using two section resin anchoring agents.
The top that left-handed nothing indulges muscle twisted steel anchor rod is furnished with matched pallet and nut, and matched pallet is pressed on fan-shaped wire netting
Tightened with nut.
The size that left-handed nothing indulges muscle twisted steel anchor rod is 22 × 1800mm of φ.
Beneficial effects of the present invention：
The supporting construction that the present invention uses belongs to anchor pole active support structure, is used cooperatively with metal mesh supporting component, carries significantly
Comprehensive pick face has been risen to meet head on coal（Rock）The stability of body, it can effectively prevent from tunneling in Bracing Process because of coal（Rock）Wall unstability wall caving triggers
The security incidents such as personnel injure by a crashing object, device damage；The present invention is not only simple in structure, easy for construction, and can substantially improve comprehensive pick face
Meet head on coal（Rock）The stress of body, ensure construction safety of the comprehensive pick face worker when carrying out permanent support；Solves existing skill
Art colliery Zong Jue faces are poor due to not using the retaining wall supporting construction security reliability of retaining wall supporting or use, cause comprehensive pick face
Coal (rock) wall side falling accident such as happens occasionally at the technical problem.
Brief description of the drawings：
Fig. 1 is schematic structural view of the invention；
Fig. 2 is structure schematic side view of the present invention.
Embodiment：
A kind of anti-wall caving retaining wall supporting construction in comprehensive pick face, it includes two fan-shaped wire nettings 2, and two fan-shaped wire nettings 2 are symmetrically solid
It is scheduled at left and right sides of tunnel；The fan-shaped wire netting 2 is welded into by reinforcing bar 1.
The size of mesh opening of fan-shaped wire netting 2 is 100mm × 100mm；The framework of fan-shaped wire netting 2 uses φ 22mm steel bar weldings
Connect.
Fan-shaped wire netting 2 is indulged muscle twisted steel anchor rod 3 by left-handed nothing and is fixed on rib or palisades 6；Each fan-shaped metal
Net 2 is indulged muscle twisted steel anchor rod 3 by two left-handed nothings and is fixed on rib or palisades 6；The present invention indulges muscle screw thread using left-handed nothing
Fan-shaped wire netting 2 is fixed on rib or palisades 6 by steel anchor rod 3；To be easy for installation and removal, the engineering time is saved, is reduced
Difficulty of construction.
Every left-handed nothing indulges muscle twisted steel anchor rod 3 using two section resin anchoring agents（5）End anchorage is carried out, prevents anchor pole from existing
Failure is loosened in wall supporting Bracing Process.
The top that left-handed nothing indulges muscle twisted steel anchor rod 3 is furnished with matched pallet 4 and nut, and matched pallet 4 is pressed in fan-shaped metal
Tightened on net 2 and with nut；It is furnished with matched pallet 4 on the top that left-handed nothing indulges muscle twisted steel anchor rod 3, nut and fan can be increased
Contact area and frictional force between shape wire netting 2, improve the reliability of whole device.
The size that left-handed nothing indulges muscle twisted steel anchor rod 3 is 22 × 1800mm of φ.
The present invention indulges muscle twisted steel anchor rod 3 and supporting four pallets 4, eight using 2, four reinforcing bar 1, wire netting left-handed nothings
Resin anchoring agent 5 is saved, every left-handed nothing indulges the supporting section resin anchoring agent 5 of two section eight of muscle twisted steel anchor rod 3, using bolting with wire mesh shape
Formula, two fan-shaped metal anchors nets and four anchor poles are arranged symmetrically at left and right sides of tunnel, form retaining wall supporting construction.
The present embodiment is with 5000mm × 3000mm（Clear span × clear height）Exemplified by Bolt net and jet full-mechanized roadway, invention is specifically described
Work progress：
Before construction, it is necessary to first carry out gib, only in place, no potential safety hazard can be in reliable interim branch for gib
The lower carry out retaining wall support construction of shield shielding.
During construction, retaining wall supporting uses indulges the cooperation of muscle twisted steel anchor rod in 4 left-handed nothings of 22 × 1800mm of φ of construction of meeting head on
The curved metal net that two radiuses are 1800mm makees retaining wall supporting, and every wire netting two left-handed nothings of construction indulge muscle screw-thread steel anchor
Bar, wire netting framework are processed with φ 22mm reinforcement welding；The wire netting of retaining wall supporting must be close to coal（Rock）Wall, and fasten
Retaining wall net anchor nut.
In work progress, check whether retaining wall supporting of meeting head on loosens at any time, it is found that loosening must reinforce in time, prevent from constructing
Period coal（Rock）Wall flaps side hurts sb.'s feelings.In work progress, coal of meeting head on（Rock）Wall must leave stand-off.
Comprehensive pick face retaining wall supporting must can be just withdrawn after preparing to open fully-mechanized digging machine；When withdrawing, all personnel must avoid work
Make dough sheet side, the coverage fallen down of supporting facility, tearing open before retaining wall supporting must be with long brake pricker by loose coal of meeting head on（Rock）
" looking for " totally, and must have special messenger to see mountain and ensure that the way of escape is unimpeded in whole process.
Claims (6)
1. a kind of anti-wall caving retaining wall supporting construction in comprehensive pick face, it includes two fan-shaped wire nettings（2）, it is characterised in that：Two fans
Shape wire netting（2）It is symmetrical to be fixed at left and right sides of tunnel；The fan-shaped wire netting（2）By reinforcing bar（1）It is welded into.
A kind of 2. comprehensive anti-wall caving retaining wall supporting construction in pick face according to claim 1, it is characterised in that：Fan-shaped wire netting
（2）Size of mesh opening be 100mm × 100mm；Fan-shaped wire netting（2）Framework use φ 22mm reinforcement weldings.
A kind of 3. comprehensive anti-wall caving retaining wall supporting construction in pick face according to claim 1, it is characterised in that：Fan-shaped wire netting
（2）Muscle twisted steel anchor rod is indulged by left-handed nothing（3）It is fixed on rib or palisades（6）On；Each fan-shaped wire netting（2）Pass through two
Left-handed nothing indulges muscle twisted steel anchor rod（3）It is fixed on rib or palisades（6）On.
A kind of 4. comprehensive anti-wall caving retaining wall supporting construction in pick face according to claim 3, it is characterised in that：Every left-handed nothing is indulged
Muscle twisted steel anchor rod（3）Using two section resin anchoring agents（5）Carry out end anchorage.
A kind of 5. comprehensive anti-wall caving retaining wall supporting construction in pick face according to claim 3, it is characterised in that：Left-handed nothing indulges muscle spiral shell
Line steel anchor rod（3）Top be furnished with matched pallet（4）And nut, matched pallet（4）It is pressed in fan-shaped wire netting（2）On twisted with nut
Tightly.
A kind of 6. comprehensive anti-wall caving retaining wall supporting construction in pick face according to claim 3, it is characterised in that：Left-handed nothing indulges muscle spiral shell
Line steel anchor rod（3）Size be 22 × 1800mm of φ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711311290.1A CN107893670A (en) | 2017-12-11 | 2017-12-11 | A kind of anti-wall caving retaining wall supporting construction in comprehensive pick face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711311290.1A CN107893670A (en) | 2017-12-11 | 2017-12-11 | A kind of anti-wall caving retaining wall supporting construction in comprehensive pick face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107893670A true CN107893670A (en) | 2018-04-10 |
Family
ID=61806206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711311290.1A Pending CN107893670A (en) | 2017-12-11 | 2017-12-11 | A kind of anti-wall caving retaining wall supporting construction in comprehensive pick face |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107893670A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110070035A1 (en) * | 2007-12-21 | 2011-03-24 | Alminco Pty Ltd. | Self drilling rock bolting |
| CN103485795A (en) * | 2013-10-10 | 2014-01-01 | 河南理工大学 | Method for quickly tunneling mine roadway and consecutively timbering mine roadway |
| CN106014458A (en) * | 2016-06-29 | 2016-10-12 | 河南理工大学 | Large-dip extremely-soft coal seam mining roadway anchor net special-shaped shed graded supporting technique |
| CN208122871U (en) * | 2017-12-11 | 2018-11-20 | 贵州大学 | A kind of anti-wall caving retaining wall suspension device in comprehensive pick face |
-
2017
- 2017-12-11 CN CN201711311290.1A patent/CN107893670A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110070035A1 (en) * | 2007-12-21 | 2011-03-24 | Alminco Pty Ltd. | Self drilling rock bolting |
| CN103485795A (en) * | 2013-10-10 | 2014-01-01 | 河南理工大学 | Method for quickly tunneling mine roadway and consecutively timbering mine roadway |
| CN106014458A (en) * | 2016-06-29 | 2016-10-12 | 河南理工大学 | Large-dip extremely-soft coal seam mining roadway anchor net special-shaped shed graded supporting technique |
| CN208122871U (en) * | 2017-12-11 | 2018-11-20 | 贵州大学 | A kind of anti-wall caving retaining wall suspension device in comprehensive pick face |
Non-Patent Citations (5)
| Title |
|---|
| 张元谷: "锚索钢桁架支护在金佳矿的应用", 矿业安全与环保, no. 1, pages 146 - 147 * |
| 秦威;: "软弱围岩巷道支护技术探讨", 科技情报开发与经济, no. 30, pages 229 - 231 * |
| 程小伟: "陈四楼煤矿在大坡度上山综掘技术上的实践与探索" * |
| 程小伟: "陈四楼煤矿在大坡度上山综掘技术上的实践与探索", 河南科技, no. 21, pages 67 * |
| 章烈敏;李学良;: "童亭矿10煤层综采工作面切眼综合控制技术浅谈", 科技资讯, no. 10, pages 94 - 95 * |
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