CN106368720A - Mold type lining and foam concrete combined supporting structure and construction method - Google Patents

Mold type lining and foam concrete combined supporting structure and construction method Download PDF

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Publication number
CN106368720A
CN106368720A CN201610883135.6A CN201610883135A CN106368720A CN 106368720 A CN106368720 A CN 106368720A CN 201610883135 A CN201610883135 A CN 201610883135A CN 106368720 A CN106368720 A CN 106368720A
Authority
CN
China
Prior art keywords
foam concrete
carcass
tunnel
sides
steel
Prior art date
Application number
CN201610883135.6A
Other languages
Chinese (zh)
Inventor
刘杰
颜溧洲
支永艳
雷岚
王连
王飞
班晓玲
李雪婷
杨帆
Original Assignee
三峡大学
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 三峡大学 filed Critical 三峡大学
Priority to CN201610883135.6A priority Critical patent/CN106368720A/en
Publication of CN106368720A publication Critical patent/CN106368720A/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04Lining with building materials
    • E21D11/10Lining 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
    • E21D11/107Reinforcing elements therefor; Holders for the reinforcing elements

Abstract

The invention discloses a mold type lining and foam concrete combined supporting structure and a construction method. The mold type lining and foam concrete combined supporting structure comprises a mold body. Foam concrete is poured on the two sides of the mold body. The two side faces of the foam concrete are sealed through inverted buckles. One end of each inverted buckle is anchored inside a rock body, and I-steel is fixedly mounted at the other end of each inverted buckle. The foam concrete is sealed between the two inverted buckles through the I-steel. The mold body is divided into three sections. Two sections are mounted on the left side and the right side of a tunnel correspondingly, and the other section is mounted on the tunnel vault. The portion, on the tunnel vault, of the mold body and the portions, on the left side and the right side of the tunnel, of the mold body are fixedly connected through stirrups. Gaps between the stirrups and the mold body are filled with the foam concrete. Four automatic pressure relief valves are mounted at the tops and the bottoms of the portions, on the left side and the right side of the tunnel, of the mold body correspondingly, and an automatic pressure relief valve is mounted in the middle of the portion, on the tunnel vault, of the mold body. The mold type lining and foam concrete combined supporting structure is low in manufacturing cost, easy to construct and high in practicability and can better meet the safety requirements.

Description

Supporting construction and construction method that tire formula lining cutting is used in combination with foam concrete
Technical field
The present invention relates to tunnel support technical field, more particularly, to a kind of tire formula lining cutting and foam concrete are used in combination Supporting construction, this new tunnel support technology, carcass and foam concrete is used in combination so that its operation strategies is more extensive, Some problems present in Practical Project can more preferably be solved, more preferable can must solve traditional Support Deformation and destroy problem of caving in.
Background technology
Tunnel support is mainly initial stage shotcrete mode, secondary lining etc. at present.These methods can effectively bear tunnel The pressure of rock mass, but the pressure of country rock is applied directly in these supporting construction, lead to these Supporting Structure deformations big and Shorten the life-span.Whole surrouding rock deformation is a process having certain persistent period, leads to the construction period elongated, later maintenance expense Also increase, this tire formula tunnel support technology is just directed to the achievement of this class Study on Problems.Pressure in carcass is with country rock Deform and change, reach the purpose automatically adjusting, reduce later stage manual maintenance expense.In seismic process, due to tire at hole The effect of fluid in body, reduces hole deformation.When tunnel is subject to horizontal and vertical shearing action, because the fluid in carcass is permissible Free Transform, thus reducing tunnel deformation, postpones service life.
Content of the invention
The purpose of this technology is not enough present in above-mentioned background technology in order to solve, and provides a kind of low cost, and construction is held Easily, practical, reach the supporting construction of more preferable safety requirements.
In order to solve above-mentioned technical problem, the present invention proposes technical scheme below: tire formula lining cutting is combined with foam concrete The supporting construction using, it includes carcass, and the both sides of described carcass pour foam concrete, the two sides of described foam concrete Sealed by back-off, one end of described back-off is anchored at the inside of rock mass, and the other end is installed with I-steel, described I-steel Foam concrete is sealed between two back-offs;Described carcass is divided into three-stage structure, each side installs one section in tunnel, It is provided with one section in tunnel vault, be fixedly linked by stirrup between the carcass of its vault and the carcass of the left and right sides, described hoop Gap between muscle and carcass is filled with using foam concrete;The top of described tunnel left and right sides carcass and bottom are respectively pacified Equipped with an automatic relief valve, an automatic relief valve is installed in the middle part of the carcass of described tunnel vault.
The intensity of described foam concrete according to burden control between 0.5-22.2mpa, carcass both sides foam concrete Ponding depths control between 5-50cm.
Described back-off is made using steel plate materialses, and its thickness is 20-60cm.
The section of described carcass is filling fluid in ellipse, carcass.
Described fluid includes sand, water and air.
Described carcass arranges one along length of tunnel direction every 50-80cm.
Described foam concrete pour length 5cm longer than the flange plate both sides of I-steel.
The construction method of the supporting construction that tire formula lining cutting is used in combination with foam concrete, it comprises the following steps:
S1: surveying engineering surrouding rock stress, and carry out tunnel excavation;
S2: determine the intensity of foam concrete, pour thickness according to surveying surrouding rock stress, and carcass resistance to compression thresholding, in carcass In be forced into the 80% of carcass pressure-bearing extreme value pressure, and install automatic relief valve in specified location;
S3: tunnel vault installs one section of carcass;
S4: the template of supporting foam concrete, pours foam concrete, and installs I-steel and back-off;
S5: install two sections of carcasses of the left and right sides;
S6: the template of supporting foam concrete;
S7: pour foam concrete, and pre-buried stirrup and installation I-steel;
S8: carry out secondary lining supporting.
The method have the advantages that:
1st, because foam concrete increased the lateral spacing effect of carcass, prevent carcass from being punctured by country rock corner angle, solving blows out asks Topic.
2nd, the comprcssive strength of foam concrete can be with flexible.
3rd, foam concrete alleviates the deformation of carcass.
4th, shorten the construction period, extend the service life in tunnel;Reduce maintenance cost, low cost.
5th, reduce the destruction of geological process.
6th, resist the destruction of vertically and horizontally shearing.
Brief description
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the carcass sectional view of the present invention.
Fig. 2 is the tunnel sectional view of the present invention.
Fig. 3 is the carcass space structural representation of the present invention.
Fig. 4 is the stirrup plane graph of the present invention.
In figure: carcass 1, foam concrete 2, I-steel 3, automatic relief valve 4, stirrup 5, rock mass 6, back-off 7.
Specific embodiment
Below in conjunction with the accompanying drawings embodiments of the present invention are described further.
The supporting construction being used in combination with foam concrete as Fig. 1-4, tire formula lining cutting, it includes carcass 1, described carcass 1 Both sides pour foam concrete 2, the two sides of described foam concrete 2 are sealed by back-off 7, one end anchor of described back-off 7 Gu in the inside of rock mass 6, the other end is installed with I-steel 3, foam concrete 2 is sealed in two and falls by described I-steel 3 Between button 7;Described carcass 1 is divided into three-stage structure, each side installs one section in tunnel, is provided with one section in tunnel vault, It is fixedly linked by stirrup 5 between the carcass of its vault and the carcass of the left and right sides, the gap between described stirrup 5 and carcass 1 It is filled with using foam concrete 2;The top of described tunnel left and right sides carcass 1 and bottom are respectively provided with an automatically unloading Valve 4, is provided with an automatic relief valve 4 in the middle part of the carcass 1 of described tunnel vault.
Further, the intensity of described foam concrete 2 according to burden control between 0.5-22.2mpa, carcass both sides The ponding depths of foam concrete control between 5-50cm.Depending on concrete value can be according to Practical Project situation.Building trade Standard jg/t266-2011 to the definition of foam concrete, advantage is: environmental protection, and after solidification, no emission produces, and is not subject to ring Border factor metamorphic deformation, construction speed is exceedingly fast, and shortens construction period, saves construction cost, may replace ceramsite concrete light-weight in the past and mixes Solidifying soil and aerating fragment concrete;Property is: insulation, heat conductivity 0.053,65 points of sound-proofing good 10cm thickness noise insulation factor The advantages of shellfish.
Further, described back-off 7 is made using steel plate materialses, and its thickness is 20-60cm, and concrete value can be according to reality Depending on project situation.
Further, the section of described carcass 1 is ellipse, and concrete size has Practical Project condition force analysis to determine, Filling fluid in carcass.
Further, described fluid includes sand, water and air.Delayed well by being played using above-mentioned fluid Punching acts on, and is effectively protected carcass 1 and escapes injury, extends its service life.
Further, described carcass 1 arranges one along length of tunnel direction every 50-80cm.
Further, described foam concrete 2 pour length 5cm longer than the flange plate both sides of I-steel 3.
Illustrate further, carcass 1 coupling part will reserve the position of stirrup 5, automatic relief valve 4 can be according to rock mass Deformation automatically unloading.
The construction method of the present invention:
1st, surveying engineering surrouding rock stress, and carry out tunnel excavation;
2nd, basis is surveyed surrouding rock stress and is determined the intensity of foam concrete, pours thickness, and carcass resistance to compression thresholding, in carcass It is forced into the 80% of carcass pressure-bearing extreme value pressure, and install automatic relief valve in specified location;
3rd, tunnel vault installs one section of carcass;
4th, the template of supporting foam concrete, pours foam concrete, and installs I-steel and back-off;
The 5th, two sections of carcasses of the left and right sides are installed;
6th, the template of supporting foam concrete;
7th, pour foam concrete, and pre-buried stirrup and installation I-steel;
8th, carry out secondary lining supporting.
The Specific construction process of the present invention is as follows:
After tunnel excavation, the part excavated out is anchored steel wire, then is forced into carcass pressure-bearing extreme value pressure in carcass 80%, and install automatic relief valve in specified location.In tunnel vault, one section of carcass is installed first, then supporting foam coagulation The template of soil and pour foam concrete, and installs I-steel, finally props up two sections of carcasses of the left and right sides and foam concrete Pour together after mould, the place stirrup connecting in carcass is fixed, I-steel and back-off are installed and tire is adjusted according to practical situation Body pressure, carcass arranges one every 50 to 80cm on length of tunnel direction.
After the completion of construction, rock mass in tunnel starts to deform, and oppresses carcass, is at this moment accomplished by powerful enough pressure in carcass Power, enters after a while, and automatic decompression valve can suitably reduce pressure according to the deformation of carcass, until its no longer pressure release, rock Body and supporting reach stress balance.
By above-mentioned description, those skilled in the art completely can be in the model without departing from this invention technological thought In enclosing, carry out various change and modification all within protection scope of the present invention.The unaccomplished matter of the present invention, belongs to ability The common knowledge of field technique personnel.

Claims (8)

1. the lining cutting of tire formula and foam concrete are used in combination supporting construction it is characterised in that: it includes carcass (1), described tire The both sides of body (1) pour foam concrete (2), and the two sides of described foam concrete (2) are passed through back-off (7) and sealed, described fall One end of button (7) is anchored at the inside of rock mass (6), and the other end is installed with I-steel (3), and described I-steel (3) is by foam Concrete (2) is sealed between two back-offs (7);Described carcass (1) is divided into three-stage structure, each side installs one in tunnel Section, is provided with one section in tunnel vault, is fixedly linked by stirrup (5) between the carcass of its vault and the carcass of the left and right sides, Gap between described stirrup (5) and carcass (1) is filled with using foam concrete (2);Described tunnel left and right sides carcass (1) top and bottom are respectively provided with an automatic relief valve (4), are provided with one in the middle part of the carcass (1) of described tunnel vault Automatic relief valve (4).
2. tire formula lining cutting according to claim 1 is used in combination with foam concrete supporting construction it is characterised in that: institute State the intensity of foam concrete (2) according to burden control between 0.5-22.2mpa, the pouring of carcass both sides foam concrete is thick Degree controls between 5-50cm.
3. tire formula lining cutting according to claim 1 is used in combination with foam concrete supporting construction it is characterised in that: institute State back-off (7) to make using steel plate materialses, its thickness is 20-60cm.
4. tire formula lining cutting according to claim 1 is used in combination with foam concrete supporting construction it is characterised in that: institute The section stating carcass (1) is filling fluid in ellipse, carcass.
5. tire formula lining cutting according to claim 4 is used in combination with foam concrete supporting construction it is characterised in that: institute State fluid and include sand, water and air.
6. tire formula lining cutting according to claim 1 is used in combination with foam concrete supporting construction it is characterised in that: institute State carcass (1) and arrange one along length of tunnel direction every 50-80cm.
7. tire formula lining cutting according to claim 1 is used in combination with foam concrete supporting construction it is characterised in that: institute That states foam concrete (2) pours length 5cm longer than the flange plate both sides of I-steel (3).
8. the construction method of the supporting construction that the formula lining cutting of claim 1-7 any one tire is used in combination with foam concrete, its It is characterised by comprising the following steps:
S1: surveying engineering surrouding rock stress, and carry out tunnel excavation;
S2: determine the intensity of foam concrete, pour thickness according to surveying surrouding rock stress, and carcass resistance to compression thresholding, in carcass In be forced into the 80% of carcass pressure-bearing extreme value pressure, and install automatic relief valve in specified location;
S3: tunnel vault installs one section of carcass;
S4: the template of supporting foam concrete, pours foam concrete, and installs I-steel and back-off;
S5: install two sections of carcasses of the left and right sides;
S6: the template of supporting foam concrete;
S7: pour foam concrete, and pre-buried stirrup and installation I-steel;
S8: carry out secondary lining supporting.
CN201610883135.6A 2016-10-10 2016-10-10 Mold type lining and foam concrete combined supporting structure and construction method CN106368720A (en)

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Publication Number Publication Date
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109595003A (en) * 2019-01-24 2019-04-09 三峡大学 A kind of big section of tunnel is backbreak liner supporting and autonomous pressure relief device and construction method
CN110318773A (en) * 2019-06-21 2019-10-11 三峡大学 The gate-type liquid lining cutting country rock pressure relief device and construction method of regulatable magnetic force

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1508040A (en) * 1976-12-08 1978-04-19 Goldsby E Lining for tunnels
US4895480A (en) * 1987-09-11 1990-01-23 Signode Corporation Method and apparatus for formation of a tunnel lining
CN102042019A (en) * 2010-11-11 2011-05-04 中铁十三局集团第四工程有限公司 Two-stair five-step excavation construction method for shallow-buried large-span soft plastic clay tunnel
CN202360107U (en) * 2012-01-30 2012-08-01 中铁七局集团武汉工程有限公司 Tunnel foam concrete shock-absorbing structure
CN103410528A (en) * 2013-08-29 2013-11-27 中南大学 Tunnel lining structure and construction method
CN104727829A (en) * 2015-03-09 2015-06-24 三峡大学 Tunnel lining structure with detachable lining tire and construction installation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1508040A (en) * 1976-12-08 1978-04-19 Goldsby E Lining for tunnels
US4895480A (en) * 1987-09-11 1990-01-23 Signode Corporation Method and apparatus for formation of a tunnel lining
CN102042019A (en) * 2010-11-11 2011-05-04 中铁十三局集团第四工程有限公司 Two-stair five-step excavation construction method for shallow-buried large-span soft plastic clay tunnel
CN202360107U (en) * 2012-01-30 2012-08-01 中铁七局集团武汉工程有限公司 Tunnel foam concrete shock-absorbing structure
CN103410528A (en) * 2013-08-29 2013-11-27 中南大学 Tunnel lining structure and construction method
CN104727829A (en) * 2015-03-09 2015-06-24 三峡大学 Tunnel lining structure with detachable lining tire and construction installation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
赵兴东等: "《井巷工程》", 31 January 2014, 冶金工业出版社 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109595003A (en) * 2019-01-24 2019-04-09 三峡大学 A kind of big section of tunnel is backbreak liner supporting and autonomous pressure relief device and construction method
CN109595003B (en) * 2019-01-24 2020-09-01 三峡大学 Tunnel large-section overexcavation lining support and autonomous pressure relief device and construction method
CN110318773A (en) * 2019-06-21 2019-10-11 三峡大学 The gate-type liquid lining cutting country rock pressure relief device and construction method of regulatable magnetic force

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Application publication date: 20170201

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