CN104110015A - Tunnel safety protection net and installation method thereof - Google Patents
Tunnel safety protection net and installation method thereof Download PDFInfo
- Publication number
- CN104110015A CN104110015A CN201410368704.4A CN201410368704A CN104110015A CN 104110015 A CN104110015 A CN 104110015A CN 201410368704 A CN201410368704 A CN 201410368704A CN 104110015 A CN104110015 A CN 104110015A
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- net
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a tunnel safety protection net and an installation method thereof, and aims at providing the tunnel safety protection net which is convenient to install and dismantle, good in protective performance and low in cost. When installed, the tunnel safety protection net is fixedly connected with an anchor rod on the top arch of a tunnel. The tunnel safety protection net comprises a support steel rope net fixedly connected with the anchor rod, an SO/2.2/50 type steel wire grating net fixedly connected with the lower portion of the support steel rope net and a DO/08/300 type steel rope net arranged below the SO/2.2/50 type steel wire grating net, wherein the DO/08/300 type steel rope net is made of wire ropes 16mm in diameter, each mesh interval of the DO/08/300 type steel rope net is 4500*4500mm, and the DO/08/300 type steel rope net is made of sewing ropes 8mm in diameter and fixedly connected with the support steel rope net. When the tunnel safety protection net is installed, menace to construction under the top arch of the tunnel, caused by pieces which fall off the top arch of the tunnel, can be greatly reduced, potential safety hazards of the falling pieces of the tunnel are eliminated, safety of constructors and devices in the tunnel is guaranteed, and good economic and social benefits are generated.
Description
Technical field
The present invention relates to, in water conservancy and hydropower civil works technical field, especially relate to a kind of tunnel safety guard net and mounting method.
Background technology
Tunnel of large section excavation all adopts stage excavation from top to bottom, after tunnel top layer excavation supporting completes, in Zhong lower floor digging process, the adjustment of tunnel crown stress has one to last process, thereby cause concrete or a part of rock of the spray of tunnel crown to come off, fall piece, tunnel bottom constructor and machinery are caused to certain security threat.For this situation, conventional process mode is mainly to adopt regularly artificial or irregular tour, investigation, finds that crack appears in concrete or the rock stratum of tunnel crown spray, takes artificial cooperative mechanical to prize clearly processing, and its construction risk is high, safety randomness is very big.
Summary of the invention
The present invention has overcome shortcoming of the prior art, the tunnel safety guard net and the mounting method that provide a kind of and install and remove conveniently, barrier propterty are good.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions: a kind of tunnel safety guard net, during installation, be fixedly connected with the anchor pole of tunnel crown, it comprises the supporting steel netting being fixedly connected with anchor pole, is fixedly connected on the SO/2.2/50 shaped steel wire grid below supporting steel netting and is arranged at the DO/08/300 shaped steel wire netting below SO/2.2/50 shaped steel wire grid; The steel cable that described supporting steel netting employing diameter is φ 16 ㎜ is made, and Mesh distance is 4500 * 4500 ㎜; Described DO/08/300 shaped steel wire netting adopts the stitching rope of φ 8 ㎜ to be fixedly connected with supporting steel netting.
Preferably, described supporting steel netting adopts 32U shape card to be fixedly connected with anchor pole.
Preferably, the spacing between described 32U shape card is not more than 3m.
Preferably, described SO/2.2/50 shaped steel wire grid adopts the iron wire of diameter 1.2mm to be connected with the colligation of supporting steel netting, and colligation node spacing is not more than 1m.
Preferably, between described SO/2.2/50 shaped steel wire grid, lap width is not less than 5cm.
The mounting method of this tunnel protective screening is as follows:
1) installation of supporting steel netting
Supporting steel netting is tunnel protective screening main bearing member, and supporting steel netting all adopts φ 16 steel cables, and Mesh distance is 4500 ㎜ * 4500 ㎜.During supporting steel netting dress, to adopting the anchor pole on 32U shape card and crown to fix, constant spacing is not more than 3m, is not less than the stringing cucurbit tensioning of 10kN in the time of fixedly with tightening force in length and breadth.
2) paving is hung grid
Tunnel safety guard net is used the SO/2.2/50 shaped steel wire grid of GPS2 type active protecting net Plays, and the steel wire diameter of this steel wire grid net is 2.2mm, mesh size 50m * 50mm, and steel wire grid net installation requirement is as follows:
After supporting steel netting installs, whole zone of protection is laid steel wire grid net, and steel wire grid net is positioned at system intermediate layer and is close to concrete surface, and supporting steel netting above it;
Steel wire grid net adopts the iron wire of diameter 1.2mm to be connected with the colligation of supporting steel netting, and colligation node spacing is not more than 1m;
Between steel wire grid net, lap width is not less than 5cm, can adopt the iron wire ligation of diameter 1.2mm;
3) stitching of wire rope net is installed
Tunnel protective screening is used the DO/08/300 shaped steel wire netting of GPS2 type active protecting net Plays, this steel rope net cable diameter 8mm, mesh size 300m * 300mm;
In each linked network region, order paving is hung wire rope net, with φ 8, sew up rope sews up wire rope net to be connected with supporting rope or adjacent net piece edge simultaneously, sewing up rope two ends should the stacked length that is not less than 0.5m, and two ends are respectively fixedly connected with steel rope net with two wire clips;
When single stitching rope error in length is larger, unnecessary end may extend into adjacent linked network unit, and not enough length is also supplemented by the stitching rope of next adjacent linked network.
This tunnel protective screening is between active and passive protective screening, it is the combination of active and passive protective screening, during installation, be almost close to the scar of tunnel crown, the anchor pole and the tunnel protective screening coaction that utilize tunnel to expose, effectively pocket protects tunnel top pneumatically placed concrete or rock falls piece.
Compared with prior art, tool of the present invention has the following advantages:
(1) this tunnel protective screening is between active and passive protective screening, it is the combination of active and passive protective screening, during installation, be almost close to the scar of tunnel crown, the anchor pole and the tunnel protective screening coaction that utilize tunnel to expose, effectively pocket protects tunnel top pneumatically placed concrete or rock falls piece, and the utilization of this new technology can reduce the construction safety of lower floor's excavation supporting in tunnel greatly, accelerating construction progress, saves the duration.Its reliable in structure, processing and fabricating is simple, and use suits large area to popularize very much.
(2) this tunnel protective screening is especially very effective to high tunnel of large section, can eliminate the potential safety hazard that tunnel crown falls piece, greatly reduce tunnel and push away the threat of piece to below construction, constructor and device security in tunnel have been ensured, reduce unnecessary economic loss, produce good economic and social benefit.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is partial structurtes scheme of installation of the present invention.
Fig. 2 is partial structurtes planar development schematic diagram of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not paying the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Tunnel safety guard net shown in Fig. 1 and Fig. 2, during installation, be fixedly connected with the anchor pole 1 of tunnel crown 8, comprise the supporting steel netting 2 being fixedly connected with anchor pole 1, be fixedly connected on SO/2.2/50 shaped steel wire grid 3 below of supporting steel netting 2 and be arranged at SO/2.2/50 shaped steel wire grid 3 DO/08/300 shaped steel wire netting 4 below; The steel cable that described supporting steel netting 2 employing diameters are φ 16 ㎜ is made, and Mesh distance is 4500 * 4500 ㎜; Described DO/08/300 shaped steel wire netting 4 adopts the stitching rope 5 of φ 8 ㎜ to be fixedly connected with supporting steel netting 2.
Described supporting steel netting 2 preferably adopts 32U shape card 6 to be fixedly connected with anchor pole 1, and the spacing between described 32U shape card 6 is not more than 3m.Described SO/2.2/50 shaped steel wire grid 3 preferably adopts the iron wire 7 of diameter 1.2mm to be connected with 2 colligations of supporting steel netting, and colligation node spacing is not more than 1m.Between described SO/2.2/50 shaped steel wire grid 3, lap width is not less than 5cm.
The mounting method of tunnel protective screening is as follows:
1) installation of supporting steel netting
Supporting steel netting is tunnel protective screening main bearing member, and supporting steel netting all adopts φ 16 steel cables, and Mesh distance is 4500 ㎜ * 4500 ㎜.During supporting steel netting dress, to adopting the anchor pole on 32U shape card and crown to fix, constant spacing is not more than 3m, is not less than the stringing cucurbit tensioning of 10kN in the time of fixedly with tightening force in length and breadth.
2) paving is hung grid
Tunnel safety guard net is used the SO/2.2/50 shaped steel wire grid of GPS2 type active protecting net Plays, and the steel wire diameter of this steel wire grid net is 2.2mm, mesh size 50m * 50mm.Steel wire grid net installation requirement is as follows:
After supporting steel netting installs, whole zone of protection is laid steel wire grid net, and steel wire grid net is positioned at system intermediate layer and is close to concrete surface, and supporting steel netting above it.
Steel wire grid net adopts the iron wire of diameter 1.2mm to be connected with the colligation of supporting steel netting, and colligation node spacing is not more than 1m.
Between steel wire grid net, lap width is not less than 5cm, can adopt the iron wire ligation of diameter 1.2mm.
3) stitching of wire rope net is installed
Tunnel protective screening is used the DO/08/300 shaped steel wire netting of GPS2 type active protecting net Plays, this steel rope net cable diameter 8mm, mesh size 300m * 300mm.
In each linked network region, order paving is hung wire rope net, with φ 8, sew up rope sews up wire rope net to be connected with supporting rope or adjacent net piece edge simultaneously, sewing up rope two ends should the stacked length that is not less than 0.5m, and two ends are respectively fixedly connected with steel rope net with two wire clips.
When single stitching rope error in length is larger, unnecessary end may extend into adjacent linked network unit, and not enough length is also supplemented by the stitching rope of next adjacent linked network.
This tunnel protective screening is between active and passive protective screening, it is the combination of active and passive protective screening, during installation, be almost close to the scar of tunnel crown, the anchor pole and the tunnel protective screening coaction that utilize tunnel to expose, effectively pocket protects tunnel top pneumatically placed concrete or rock falls piece.The utilization of this new technology, can reduce the construction safety of lower floor's excavation supporting in tunnel greatly, and accelerating construction progress is saved the duration.Its reliable in structure, processing and fabricating is simple, and use suits large area to popularize very much.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a tunnel safety guard net, during installation, be fixedly connected with the anchor pole (1) of tunnel crown (8), it is characterized in that: comprise the supporting steel netting (2) being fixedly connected with anchor pole (1), be fixedly connected on SO/2.2/50 shaped steel wire grid (3) below of supporting steel netting (2) and be arranged at SO/2.2/50 shaped steel wire grid (3) DO/08/300 shaped steel wire netting (4) below; Described supporting steel netting (2) employing diameter is that the steel cable of φ 16 ㎜ is made, and Mesh distance is 4500 * 4500 ㎜; Described DO/08/300 shaped steel wire netting (4) adopts the stitching rope (5) of φ 8 ㎜ to be fixedly connected with supporting steel netting (2).
2. tunnel safety guard net according to claim 1, is characterized in that: described supporting steel netting (2) adopts 32U shape card (6) to be fixedly connected with anchor pole (1).
3. tunnel safety guard net according to claim 2, is characterized in that: the spacing between described 32U shape card (6) is not more than 3m.
4. tunnel safety guard net according to claim 1, is characterized in that: described SO/2.2/50 shaped steel wire grid (3) adopts the iron wire (7) of diameter 1.2mm to be connected with supporting steel netting (2) colligation, and colligation node spacing is not more than 1m.
5. tunnel safety guard net according to claim 1, is characterized in that: between described SO/2.2/50 shaped steel wire grid (3), lap width is not less than 5cm.
6. the mounting method of tunnel safety guard net claimed in claim 1, is characterized in that being carried out as follows:
1) installation of supporting steel netting
Supporting steel netting is tunnel protective screening main bearing member, and supporting steel netting all adopts φ 16 steel cables, and Mesh distance is 4500 ㎜ * 4500 ㎜;
During supporting steel netting dress, to adopting the anchor pole on 32U shape card and crown to fix, constant spacing is not more than 3m, is not less than the stringing cucurbit tensioning of 10kN in the time of fixedly with tightening force in length and breadth;
2) paving is hung grid
Tunnel safety guard net is used the SO/2.2/50 shaped steel wire grid of GPS2 type active protecting net Plays, and the steel wire diameter of this steel wire grid net is 2.2mm, mesh size 50m * 50mm, and steel wire grid net installation requirement is as follows:
After supporting steel netting installs, whole zone of protection is laid steel wire grid net, and steel wire grid net is positioned at system intermediate layer and is close to concrete surface, and supporting steel netting above it;
Steel wire grid net adopts the iron wire of diameter 1.2mm to be connected with the colligation of supporting steel netting, and colligation node spacing is not more than 1m;
Between steel wire grid net, lap width is not less than 5cm, can adopt the iron wire ligation of diameter 1.2mm;
3) stitching of wire rope net is installed
Tunnel protective screening is used the DO/08/300 shaped steel wire netting of GPS2 type active protecting net Plays, this steel rope net cable diameter 8mm, mesh size 300m * 300mm;
In each linked network region, order paving is hung wire rope net, with φ 8, sew up rope sews up wire rope net to be connected with supporting rope or adjacent net piece edge simultaneously, sewing up rope two ends should the stacked length that is not less than 0.5m, and two ends are respectively fixedly connected with steel rope net with two wire clips;
When single stitching rope error in length is larger, unnecessary end may extend into adjacent linked network unit, and not enough length is also supplemented by the stitching rope of next adjacent linked network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410368704.4A CN104110015B (en) | 2014-07-30 | 2014-07-30 | A kind of installation method of tunnel safety guard net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410368704.4A CN104110015B (en) | 2014-07-30 | 2014-07-30 | A kind of installation method of tunnel safety guard net |
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| Publication Number | Publication Date |
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| CN104110015A true CN104110015A (en) | 2014-10-22 |
| CN104110015B CN104110015B (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410368704.4A Active CN104110015B (en) | 2014-07-30 | 2014-07-30 | A kind of installation method of tunnel safety guard net |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401956A (en) * | 2015-12-24 | 2016-03-16 | 四川川交路桥有限责任公司 | Anti-rock burst and anti-rockfall flexible protection device and construction method for tunnel excavation |
| CN108411924A (en) * | 2018-02-09 | 2018-08-17 | 中建五局第三建设有限公司 | Construction method for mine pit wall safety protection |
| CN108505755A (en) * | 2018-04-13 | 2018-09-07 | 方高健 | One kind preventing fire-retardant protection network |
| CN108661663A (en) * | 2017-03-28 | 2018-10-16 | 北京爱卓达科技有限公司 | A kind of method of reinforcing insulating protection net in rough tunnel |
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| CN101709650A (en) * | 2009-12-03 | 2010-05-19 | 中冶集团华冶资源开发有限责任公司 | Method for supporting steel grating |
| KR20120050605A (en) * | 2010-11-11 | 2012-05-21 | 디앤씨건설 주식회사 | Structure of reinforcing net of tunnel |
| CN102926549A (en) * | 2012-11-22 | 2013-02-13 | 中冶建工集团有限公司 | Manufacturing method for building safety vertical net |
| CN103572761A (en) * | 2012-07-19 | 2014-02-12 | 中铁十九局集团第二工程有限公司 | Protection method for existing line nearby construction by using brook protective screenings |
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2014
- 2014-07-30 CN CN201410368704.4A patent/CN104110015B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709650A (en) * | 2009-12-03 | 2010-05-19 | 中冶集团华冶资源开发有限责任公司 | Method for supporting steel grating |
| KR20120050605A (en) * | 2010-11-11 | 2012-05-21 | 디앤씨건설 주식회사 | Structure of reinforcing net of tunnel |
| CN103572761A (en) * | 2012-07-19 | 2014-02-12 | 中铁十九局集团第二工程有限公司 | Protection method for existing line nearby construction by using brook protective screenings |
| CN102926549A (en) * | 2012-11-22 | 2013-02-13 | 中冶建工集团有限公司 | Manufacturing method for building safety vertical net |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401956A (en) * | 2015-12-24 | 2016-03-16 | 四川川交路桥有限责任公司 | Anti-rock burst and anti-rockfall flexible protection device and construction method for tunnel excavation |
| CN105401956B (en) * | 2015-12-24 | 2018-10-12 | 四川川交路桥有限责任公司 | A kind of flexible protective device and construction method of the anti-rock burst falling rocks of tunnel excavation |
| CN108661663A (en) * | 2017-03-28 | 2018-10-16 | 北京爱卓达科技有限公司 | A kind of method of reinforcing insulating protection net in rough tunnel |
| CN108661663B (en) * | 2017-03-28 | 2020-06-30 | 北京爱卓达科技有限公司 | Method for reinforcing insulating protective net in lining-free tunnel |
| CN108411924A (en) * | 2018-02-09 | 2018-08-17 | 中建五局第三建设有限公司 | Construction method for mine pit wall safety protection |
| CN108411924B (en) * | 2018-02-09 | 2020-03-13 | 中建五局第三建设有限公司 | Construction method for mine pit wall safety protection |
| CN108505755A (en) * | 2018-04-13 | 2018-09-07 | 方高健 | One kind preventing fire-retardant protection network |
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| Publication number | Publication date |
|---|---|
| CN104110015B (en) | 2016-06-29 |
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