CN105298514B - A kind of cast-in-place continuous concrete support and its installation method - Google Patents
A kind of cast-in-place continuous concrete support and its installation method Download PDFInfo
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- CN105298514B CN105298514B CN201510837256.2A CN201510837256A CN105298514B CN 105298514 B CN105298514 B CN 105298514B CN 201510837256 A CN201510837256 A CN 201510837256A CN 105298514 B CN105298514 B CN 105298514B
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Abstract
The invention provides a kind of cast-in-place continuous concrete support and its installation method, a kind of continuous cast-in-place concrete support is made up of geotechnical fabric bag shell and interior fiber concrete of filling out, wherein, geotechnical fabric bag shell is made up of bearing support shell and connecting cross beam shell, the shape of bearing support shell matches with tunnel Chu Chen sections, its underpart sets grout hole, and connecting cross beam shell is located between the bearing support shell of both sides, and bearing support shell is stitched together with connecting cross beam shell and inside connects.Its installation method is, after the completion of bolt-mesh-spurting supporting, geotechnical fabric bag shell is deployed in design attitude；Then by grout hole toward irrigating fiber concrete in geotechnical fabric bag shell；Plugging grouting hole after the completion of perfusion.Present apparatus simple installation, good integrity, and low manufacture cost, applicability are extensive, are greatly improved the supporting effect and support efficiency of Soft Rock Drifts At Coal.
Description
Technical field
The present invention relates to a kind of New Supporting equipment for mine support, more particularly to one kind to be used for coal mine roadway soft rock
The cast-in-place continuous concrete support of supporting.
Background technology
In China central and east part, mine resources are faced under the situation of exhaustion, to ensure the Sustainable high yield of coal mining, coal
Just progressively shifted to the ground such as Inner Mongol and Xinjiang charcoal main producing region.West area coal resources reserves are enriched, but geological conditions is with
Eastern region in the mining area Cretaceous System exploited, finds to be widely present in Jurassic stratum compared to but there is larger difference
The weak cementing soft rock of a kind of argillization, its degree of consolidation is poor, low intensity, easy-weathering, meets cement or expansion, to colliery tunnel support
Great difficulty is brought, seriously constrains the safe efficient production in colliery.
In roadway support, existing frequently-used U-shaped steel collapsible timbering, its working resistance is hindered by the friction of Support joint
Power determines, and the frictional resistance at this depends on the locking degree of card cable.Domestic collapsible timbering is generally tight using bolt
Stationary card cable, due to lacking special power operated wrench, the coupling mechanism force of card cable cannot be guaranteed, and cause working resistance of support low,
It can only achieve 50% of its ultimate bearing capacity or so.In addition, U-shaped steel collapsible timbering has walled metallic structure rigidity not
The features such as foot, external loading ratio are more sensitive, poor plasticity, when the weak cementing soft rock of the argillization for running into property extreme difference, supporting effect
It can have a greatly reduced quality.And for some complicated high stress very soft rock roadways, the method using U shaped steel supportings is even more to be difficult to ensure that
The stability of country rock.
In order to overcome above-mentioned deficiency of the U-shaped steel collapsible timbering in soft rock roadway support, some scholars are to roadway support
Technology is explored and innovated.The B of Chinese invention patent CN 1959063 disclose one kind can contracting formula steel pipe concrete bracket,
Including plurality of sections of steel pipes, it is connected with each other between two adjacent sections steel pipe by connecting tube, steel duct loads concrete.With structure letter
Singly, the advantages of support capacity is strong, stability is good, reasonable stress.However, because body is rigid and quality is very big, then add
Upper deep-well tunnel internal environment is complicated, can run into many troubles when by equipment conveying to branch mask.In addition, when this device is installed
Need Assembling, complex operation.
It is therefore desirable to explore one kind both to can guarantee that supporting effect, and the soft rock roadway support of convenient transportation, simple installation
Form.
The content of the invention
For the above-mentioned deficiency for the support form for being currently used for deep-well or soft rock large deformation tunnel, the invention provides one kind
Principle is simple, simple installation, applicability are extensive, the cast-in-place continuous concrete support of low manufacture cost.
A kind of cast-in-place continuous concrete support of the present invention, is made up of geotechnical fabric bag shell and interior fiber concrete of filling out, and it is special
Sign is that described geotechnical fabric bag shell is made up of bearing support shell and connecting cross beam shell, the shape of bearing support shell,
Size matches with the section in tunnel, and its underpart sets grout hole, connecting cross beam shell be located at both sides bearing support shell it
Between, connecting cross beam shell is stitched together with bearing support shell and inside connects.
Described geotechnical fabric bag shell, its making material are to pass through flame-retardant modified geotechnical fabric bag.
A kind of installation method of described cast-in-place continuous concrete support is：Carried out after the completion of roadway excavation using Bolt net and jet
Preliminary bracing, then geotechnical fabric bag shell is deployed in design attitude；By grout hole toward irrigating fiber in geotechnical fabric bag shell
Concrete, until concrete support is molded；Plugging grouting hole after the completion of perfusion, installation.
A kind of cast-in-place continuous concrete support of the present invention has the following advantages that：
(1) a kind of cast-in-place continuous concrete support of the present invention, its shell are made up of geotechnical fabric bag material, light weight and can
Fold, convenience in transport；
(2) the geotechnical fabric bag enclosure of apparatus of the present invention connects completely, and after penetration concrete, whole support turns into one
Individual continuous overall, supporting construction has good globality；
(3) apparatus of the present invention geotechnical fabric bag shell has certain water penetration, and after penetration concrete, unnecessary moisture leads to
Cross fabric void to ooze out, the ratio of mud can be reduced rapidly, shorten the setting time of concrete, increase the intensity of concrete；
(4) it the shape and size of apparatus of the present invention geotechnical fabric bag shell, can especially be sewed, fitted according to engineering exploration data
Should be in all kinds of engineering situations；
(5) concrete filled of apparatus of the present invention is fiber concrete, has the tension higher than normal concrete with resisting
Curved ultimate strength, more adapt to ambient stress complicated inside mine；
(6) geotechnical fabric bag shell need to only be deployed directly to irrigate fiber concrete when apparatus of the present invention are installed, perfusion is completed
Plugging grouting hole afterwards, installation process are simple and convenient；
(7) material needed for apparatus of the present invention is fiber concrete and geotechnical fabric bag, and materials are easy, makes simple, cost
It is low.
Brief description of the drawings
Fig. 1 is a kind of structural representation of cast-in-place continuous concrete support of the present invention.
Fig. 2 is a kind of supporting schematic diagram of cast-in-place continuous concrete support of the present invention.
Fig. 3 is a kind of schematic cross-section of cast-in-place continuous concrete support of the present invention.
Marginal data：1- bearing support shells；2- connecting cross beam shells；3- grout holes；4- roadway surrounding rocks；5- bar-mat reinforcements；
6- gunite concretes；7- anchor poles；A kind of cast-in-place continuous concrete supports of 8-；9- geotechnical fabric bag shells；10- fiber concretes；11-
Nylon rope.
Embodiment
The present invention will be further described with example below in conjunction with the accompanying drawings.
As Figure 1-3, a kind of cast-in-place continuous concrete support 8 of the present invention, including geotechnical fabric bag shell 9 and interior fill out fiber
Concrete 10.Described geotechnical fabric bag shell 9 is made up of bearing support shell 1 and connecting cross beam shell 2；Described bearing support
The shape of shell 1 matches with tunnel Chu Chen sections, and its underpart sets grout hole 3；Connecting cross beam shell 2 is located at the carrying branch of both sides
Between rack enclosure 1, bearing support shell 1 is stitched together with connecting cross beam shell 2 and inside connects.
Described geotechnical fabric bag shell 9, connected with the nylon rope 11 of two row's certain lengths between its levels, filled with control
The thickness of bracket cross section when filling out.
The making material of described geotechnical fabric bag shell 9 is to pass through flame-retardant modified geotechnical fabric bag, the size of its each several part
It can be determined according to engineering is actual.
A kind of installation method of described cast-in-place continuous concrete support 8 is：Entered after the completion of roadway excavation using Bolt net and jet
Row preliminary bracing, then geotechnical fabric bag shell 9 is deployed in design attitude；Irrigated by grout hole 3 toward geotechnical fabric bag shell 9 is interior
Fiber concrete 10；Plugging grouting hole 3, installation after the completion of perfusion.Will sprinkle water maintenance in time after support installation, make fibre
Dimension concrete 10 reaches maximum intensity.
Claims (2)
1. a kind of cast-in-place continuous concrete support, is made up of, it is characterised in that institute geotechnical fabric bag shell and interior fiber concrete of filling out
The geotechnical fabric bag shell stated is made up of bearing support shell and connecting cross beam shell, the shape of bearing support shell, size with
The section in tunnel matches, and its underpart sets grout hole, and connecting cross beam shell is located between the bearing support shell of both sides, and connection is horizontal
Beam shell is stitched together with bearing support shell and inside connects.
2. a kind of installation method of cast-in-place continuous concrete support as claimed in claim 1, it is characterised in that roadway excavation is complete
Preliminary bracing is carried out using Bolt net and jet into rear, then deploys geotechnical fabric bag shell in design attitude；Pass through the past geotechnique of grout hole
Perfusion fiber concrete in mould bag shell, until concrete support is molded；Plugging grouting hole after the completion of perfusion, installation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510837256.2A CN105298514B (en) | 2015-11-26 | 2015-11-26 | A kind of cast-in-place continuous concrete support and its installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510837256.2A CN105298514B (en) | 2015-11-26 | 2015-11-26 | A kind of cast-in-place continuous concrete support and its installation method |
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| CN105298514A CN105298514A (en) | 2016-02-03 |
| CN105298514B true CN105298514B (en) | 2017-12-12 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107740700A (en) * | 2017-10-26 | 2018-02-27 | 吕连勋 | A kind of novel subway tunnel fill-type liner structure |
| CN107676108A (en) * | 2017-10-26 | 2018-02-09 | 吕连勋 | A kind of subway tunnel high strength support structure and its construction method |
| CN112796782A (en) * | 2021-03-16 | 2021-05-14 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Buffering energy-absorbing cloth bag beam capable of resisting large deformation of soft rock in underground engineering |
| CN113137242B (en) * | 2021-03-16 | 2023-06-02 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Assembled type combined supporting structure for tunnel in deep underground space |
| CN113599883B (en) * | 2021-06-25 | 2022-10-28 | 长三角(义乌)生态环境研究中心 | Geotechnical pipe bag structure, geotechnical pipe bag device and sludge dewatering system |
| CN114991810B (en) * | 2022-08-03 | 2022-11-22 | 山东建筑大学 | Composite supporting structure and construction method of wall rear mould bag grouting and high-strength support |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205277438U (en) * | 2015-11-26 | 2016-06-01 | 山东科技大学 | Cast -in -place continuous concrete support |
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| JP4071981B2 (en) * | 2002-04-02 | 2008-04-02 | ジオスター株式会社 | Construction method of large section box culvert |
| CN1959063B (en) * | 2006-10-17 | 2010-10-13 | 中国矿业大学(北京) | Scalable steel pipe concrete support |
| CN102852533A (en) * | 2012-10-18 | 2013-01-02 | 山东大学 | High-strength three-dimensional support system of yielding type restriction concrete lagging jack |
| CN204225906U (en) * | 2014-11-20 | 2015-03-25 | 山东科技大学 | Large deformation hollow steel tube concrete support |
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| CN205277438U (en) * | 2015-11-26 | 2016-06-01 | 山东科技大学 | Cast -in -place continuous concrete support |
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