CN204200244U - A kind of double-deck Bolt net and jet coupling supporting structure - Google Patents
A kind of double-deck Bolt net and jet coupling supporting structure Download PDFInfo
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- CN204200244U CN204200244U CN201420610420.7U CN201420610420U CN204200244U CN 204200244 U CN204200244 U CN 204200244U CN 201420610420 U CN201420610420 U CN 201420610420U CN 204200244 U CN204200244 U CN 204200244U
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- jet
- supporting
- bolt net
- concrete
- anchor pole
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Abstract
A kind of double-deck Bolt net and jet coupling supporting structure, comprises a Bolt net and jet and secondary Bolt net and jet.One time Bolt net and jet comprises once supporting anchor pole, wire gauze and once supporting layer of concrete, and described once supporting anchor pole gos deep into tunnel boring, and wire gauze is hung on once supporting anchor pole and covers surface, tunnel, and once supporting layer of concrete covers on wire gauze.Secondary Bolt net and jet comprises reinforced mesh, secondary supporting anchor pole and secondary supporting layer of concrete, described secondary supporting anchor pole gos deep into tunnel boring through a Bolt net and jet, reinforced mesh covers on a Bolt net and jet, and secondary supporting layer of concrete covers on reinforced mesh.This supporting and protection structure makes a Bolt net and jet and secondary Bolt net and jet give full play to respective effect, improves overall supporting effect, can effectively solve perturb by exploitation, the support issues in non-smooth weak tunnel that concussion of blasting, impact endurance test shock cause.
Description
Technical field
The utility model relates to a kind of supporting and protection structure, especially a kind of double-deck Bolt net and jet coupling supporting structure for surface, non-smooth tunnel.
Background technology
In coal mine underground exploitation, the generation energetic disturbances such as sinking and blasting, bump, ore deposit shake and strata movement bring out coal and rock and constantly shake, stress wave is propagated in coal and rock, reflection, when stress wave propagation reflects to form tensile stress ripple to producing on surface during surface, tunnel, wall-rock crack is grown, constantly lesion ruptures is caused to surface, tunnel, and then brings out roadway support structural instability.In the coal and rock having jerk, excavate tunnel, the physico-mechanical properties affecting coal and rock by shock wave changes, and its intensity reduces, especially soft-rock tunnel, and pick can cause tunnel surface irregularity behind lane.Can because the vibrations of meeting head on to produce cause sprinkler body ftracture and come off if first carry out sprayed mortar.The higher steel mesh reinforcement of intensity is directly adopted directly to be attached to surface, tunnel on surface, this rough tunnel, then pallet and nut is added, then when moment of torsion moment reaches 400Nm, pallet still completely and tunnel surface contact, can not can cause the loss of the early stage pretightning force in tunnel like this.
Utility model content
In order to solve the deficiencies in the prior art, the utility model proposes a kind of double-deck Bolt net and jet coupling supporting structure.Double-deck Bolt net and jet coupling supporting structure improves overall supporting effect, can effectively solve perturb by exploitation, the support issues in non-smooth weak tunnel that concussion of blasting, impact endurance test shock cause.
The utility model adopts following technical scheme:
A kind of double-deck Bolt net and jet coupling supporting structure, comprise a Bolt net and jet and secondary Bolt net and jet, a described Bolt net and jet comprises once supporting anchor pole, wire gauze and once supporting layer of concrete, described once supporting anchor pole gos deep into tunnel boring, wire gauze is hung on once supporting anchor pole and covers surface, tunnel, and once supporting layer of concrete covers on wire gauze;
Described secondary Bolt net and jet comprises reinforced mesh, secondary supporting anchor pole and secondary supporting layer of concrete, described secondary supporting anchor pole gos deep into tunnel boring through a Bolt net and jet, reinforced mesh covers on a Bolt net and jet, and secondary supporting layer of concrete covers on reinforced mesh.
A kind of double-deck Bolt net and jet coupling supporting structure of the utility model, described secondary Bolt net and jet also comprises anchor cable, and anchor cable gos deep into tunnel boring, the Zheng Ding position of cable bolting in tunnel and the shoulder nest position in tunnel through a Bolt net and jet.
A kind of double-deck Bolt net and jet coupling supporting structure of the utility model, described once supporting anchor pole and secondary supporting anchor pole and once supporting anchor pole and anchor cable are five flower shapes arrangements, wherein secondary supporting rock-bolt length is 2000mm-2600mm, anchor cable length is 5000mm-8000mm, and arranging distance is 800mm × 800mm-1000mm × 1000mm.
A kind of double-deck Bolt net and jet coupling supporting structure of the utility model, described once supporting layer of concrete adopts flexible concrete, and the thickness of once supporting layer of concrete is 20mm-30mm.
A kind of double-deck Bolt net and jet coupling supporting structure of the utility model, described secondary supporting layer of concrete adopts flexible concrete, and the thickness of secondary supporting layer of concrete is 80mm-100mm.
A kind of double-deck Bolt net and jet coupling supporting structure of the utility model, described wire gauze is galvanized wire mesh, and galvanized wire mesh is woven by zinc-plated 6# iron wire and forms.
A kind of double-deck Bolt net and jet coupling supporting structure of the utility model, described reinforced mesh is formed by the reinforcement welding of Φ 8mm.
A kind of double-deck Bolt net and jet coupling supporting structure of the utility model, the end of described once supporting anchor pole and secondary supporting anchor pole all has anchor rod pallet board to fix.
Adopt as above technical scheme, the Advantageous Effects that the utility model obtains:
Wire gauze is galvanized wire mesh, and galvanized wire mesh is woven by zinc-plated 6# iron wire and forms.Wire gauze has larger flexibility, has certain tension, shear-stable mechanical property, protect the coal rock layer of surface, tunnel by loose, the wall caving of vibration influence, and it is levelling on surface, non-smooth tunnel to be convenient to anchor rod pallet board.
Reinforced mesh is formed by the reinforcement welding of Φ 8mm.Steel mesh reinforcement intensity is high, and greatly, restriction tunnel areal deformation, is combined with secondary supporting layer of concrete simultaneously for resistance to compression, tensile strength, forms the tunnel of reinforced concrete structure supporting by vibration influence.
Adopt flexible concrete, flexible concrete has certain pliability, under the condition of guaranteed strength, can reduce the cracking of layer of concrete under shock effect and drop.
A kind of double-deck Bolt net and jet coupling supporting structure, comprises a Bolt net and jet and secondary Bolt net and jet.Bolt net and jet is used for levelling on surface, uneven tunnel, protect simultaneously rock stratum, surface, tunnel due to exploitation perturbs, the reason such as impact endurance test shock causes wall caving, loosely to drop; The basis of a bolt-mesh-spurting supporting adopts secondary Bolt net and jet reinforce, define double-deck Bolt net and jet coupling supporting structure.This supporting and protection structure makes a Bolt net and jet and secondary Bolt net and jet give full play to respective effect, improves overall supporting effect.
Accompanying drawing explanation
Fig. 1 is a kind of double-deck Bolt net and jet coupling supporting structure section schematic diagram.
Fig. 2 is double-deck Bolt net and jet coupling supporting structure upward view.
Detailed description of the invention
1 to 2 detailed description of the invention of the present utility model is described further by reference to the accompanying drawings:
A kind of double-deck Bolt net and jet coupling supporting structure, comprise a Bolt net and jet and secondary Bolt net and jet, a described Bolt net and jet comprises once supporting anchor pole 1, wire gauze 4 and once supporting layer of concrete, described once supporting anchor 1 bar gos deep into tunnel boring, wire gauze 4 is hung on once supporting anchor pole and covers surface, tunnel 7, and once supporting layer of concrete covers on wire gauze.Secondary Bolt net and jet comprises reinforced mesh 5, secondary supporting anchor pole 2 and secondary supporting layer of concrete 6, described secondary supporting anchor pole 2 gos deep into tunnel boring through a Bolt net and jet, reinforced mesh covers on a Bolt net and jet, and secondary supporting layer of concrete 6 covers on reinforced mesh 5.Secondary Bolt net and jet also comprises anchor cable 3, and cable bolting is stressed larger position in tunnel.Anchor cable 3 gos deep into tunnel boring through a Bolt net and jet, and the Zheng Ding position of cable bolting in tunnel and the shoulder nest position in tunnel, namely the shoulder nest position in tunnel is the both sides, tunnel at 45 °, the elevation angle with level.The end of once supporting anchor pole 1 and secondary supporting anchor pole 2 all has anchor rod pallet board to fix.
As shown in Figure 2, once supporting anchor pole and secondary supporting anchor pole and once supporting anchor pole and anchor cable are that five flower shapes 8 are arranged, wherein secondary supporting rock-bolt length is 2000mm-2600mm, and anchor cable length is 5000mm-8000mm, and arranging distance is 800mm × 800mm-1000mm × 1000mm.
Once supporting layer of concrete adopts flexible concrete, and the thickness of once supporting layer of concrete is 20mm-30mm.Secondary supporting layer of concrete adopts flexible concrete, and the thickness of secondary supporting layer of concrete is 80mm-100mm.
Wire gauze is galvanized wire mesh, and galvanized wire mesh is woven by zinc-plated 6# iron wire and forms.Reinforced mesh is formed by the reinforcement welding of Φ 8mm.
Double-deck Bolt net and jet coupling supporting structure can be constructed at the scene, supported laneway.First do a Bolt net and jet.After opening tunnel, first hole on roadway surrounding rock; After beating finishing drilling hole, hang wire gauze on surface, irregular tunnel; Once supporting anchor pole and anchor rod pallet board are installed again; Spray 20mm-30mm flexible concrete afterwards and form once supporting layer of concrete, and by levelling for surface, irregular tunnel.The time of doing secondary Bolt net and jet is determined according to pressure monitoring.The basis of a Bolt net and jet hangs up reinforced mesh; Drilling also installs secondary supporting anchor pole and anchor rod pallet board; At roadway support stressed large key position, anchor cable is installed afterwards and carries out deep anchoring; The flexible concrete finally spraying 80mm-100mm forms secondary supporting layer of concrete.A Bolt net and jet and secondary Bolt net and jet are firmly combined as a whole by secondary supporting layer of concrete.
Certainly; more than illustrate and be only preferred embodiment of the present utility model; the utility model is not limited to enumerate above-described embodiment; should be noted that; any those of ordinary skill in the art are under the guidance of this manual; made all equivalently to substitute, obvious variant, within the essential scope all dropping on this manual, protection of the present utility model ought to be subject to.
Claims (8)
1. a double-deck Bolt net and jet coupling supporting structure, it is characterized in that, comprise a Bolt net and jet and secondary Bolt net and jet, a described Bolt net and jet comprises once supporting anchor pole, wire gauze and once supporting layer of concrete, described once supporting anchor pole gos deep into tunnel boring, wire gauze is hung on once supporting anchor pole and covers surface, tunnel, and once supporting layer of concrete covers on wire gauze;
Described secondary Bolt net and jet comprises reinforced mesh, secondary supporting anchor pole and secondary supporting layer of concrete, described secondary supporting anchor pole gos deep into tunnel boring through a Bolt net and jet, reinforced mesh covers on a Bolt net and jet, and secondary supporting layer of concrete covers on reinforced mesh.
2. one according to claim 1 double-deck Bolt net and jet coupling supporting structure, is characterized in that, described secondary Bolt net and jet also comprises anchor cable, and anchor cable gos deep into tunnel boring, the Zheng Ding position of cable bolting in tunnel and the shoulder nest position in tunnel through a Bolt net and jet.
3. one according to claim 1 and 2 double-deck Bolt net and jet coupling supporting structure, it is characterized in that, described once supporting anchor pole and secondary supporting anchor pole and once supporting anchor pole and anchor cable are five flower shapes arrangements, wherein secondary supporting rock-bolt length is 2000mm-2600mm, anchor cable length is 5000mm-8000mm, and arranging distance is 800mm × 800mm-1000mm × 1000mm.
4. one according to claim 1 double-deck Bolt net and jet coupling supporting structure, is characterized in that, described once supporting layer of concrete adopts flexible concrete, and the thickness of once supporting layer of concrete is 20mm-30mm.
5. one according to claim 1 double-deck Bolt net and jet coupling supporting structure, is characterized in that, described secondary supporting layer of concrete adopts flexible concrete, and the thickness of secondary supporting layer of concrete is 80mm-100mm.
6. one according to claim 1 double-deck Bolt net and jet coupling supporting structure, is characterized in that, described wire gauze is galvanized wire mesh, and galvanized wire mesh is woven by zinc-plated 6# iron wire and forms.
7. one according to claim 1 double-deck Bolt net and jet coupling supporting structure, is characterized in that, described reinforced mesh is formed by the reinforcement welding of Φ 8mm.
8. one according to claim 1 double-deck Bolt net and jet coupling supporting structure, is characterized in that, the end of described once supporting anchor pole and secondary supporting anchor pole all has anchor rod pallet board to fix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420610420.7U CN204200244U (en) | 2014-10-21 | 2014-10-21 | A kind of double-deck Bolt net and jet coupling supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420610420.7U CN204200244U (en) | 2014-10-21 | 2014-10-21 | A kind of double-deck Bolt net and jet coupling supporting structure |
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| Publication Number | Publication Date |
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| CN204200244U true CN204200244U (en) | 2015-03-11 |
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|---|---|---|---|
| CN201420610420.7U Expired - Fee Related CN204200244U (en) | 2014-10-21 | 2014-10-21 | A kind of double-deck Bolt net and jet coupling supporting structure |
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| CN (1) | CN204200244U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507923A (en) * | 2015-12-29 | 2016-04-20 | 大同煤矿集团有限责任公司 | Bolting-wire mesh-shotcreting support and bolt-cable coupling support integrated supporting method for large-span chamber |
| CN109723460A (en) * | 2019-01-15 | 2019-05-07 | 西南交通大学 | A kind of Deformation control supporting construction suitable for serious deformation |
| CN111472806A (en) * | 2020-03-30 | 2020-07-31 | 北京科技大学 | Novel combined shielding structure for mining surrounding rock ground pressure disaster protection |
| CN113073992A (en) * | 2021-04-14 | 2021-07-06 | 中钢集团马鞍山矿山研究总院股份有限公司 | Roadway supporting method for rock mass containing weak interlayer in underground mine |
-
2014
- 2014-10-21 CN CN201420610420.7U patent/CN204200244U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507923A (en) * | 2015-12-29 | 2016-04-20 | 大同煤矿集团有限责任公司 | Bolting-wire mesh-shotcreting support and bolt-cable coupling support integrated supporting method for large-span chamber |
| CN109723460A (en) * | 2019-01-15 | 2019-05-07 | 西南交通大学 | A kind of Deformation control supporting construction suitable for serious deformation |
| CN111472806A (en) * | 2020-03-30 | 2020-07-31 | 北京科技大学 | Novel combined shielding structure for mining surrounding rock ground pressure disaster protection |
| CN111472806B (en) * | 2020-03-30 | 2020-12-15 | 北京科技大学 | Combined shielding structure for mining surrounding rock ground pressure disaster protection |
| CN113073992A (en) * | 2021-04-14 | 2021-07-06 | 中钢集团马鞍山矿山研究总院股份有限公司 | Roadway supporting method for rock mass containing weak interlayer in underground mine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20151021 |
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| EXPY | Termination of patent right or utility model |