CN106837371A - The step band inverted arch construction method of large deformation tunnel two - Google Patents

The step band inverted arch construction method of large deformation tunnel two Download PDF

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Publication number
CN106837371A
CN106837371A CN201710177072.7A CN201710177072A CN106837371A CN 106837371 A CN106837371 A CN 106837371A CN 201710177072 A CN201710177072 A CN 201710177072A CN 106837371 A CN106837371 A CN 106837371A
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CN
China
Prior art keywords
inverted arch
predicament
construction
embarrassing situation
tunnel
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Application number
CN201710177072.7A
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Chinese (zh)
Inventor
罗宁宁
夏平
罗康勇
Original Assignee
中铁五局集团成都工程有限责任公司
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Application filed by 中铁五局集团成都工程有限责任公司 filed Critical 中铁五局集团成都工程有限责任公司
Priority to CN201710177072.7A priority Critical patent/CN106837371A/en
Publication of CN106837371A publication Critical patent/CN106837371A/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/14Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings

Abstract

The present invention provides a kind of step of large deformation tunnel two band inverted arch constructing structure and construction method.A kind of step of large deformation tunnel two band inverted arch construction method is comprised the following steps:Step one, two steps are excavated:According to country rock situation, tunnel face is divided into two steps and is excavated;Step 2, top bar, get out of a predicament or an embarrassing situation and inverted arch excavate adjustment:Adjustment top bar height and length, get out of a predicament or an embarrassing situation and inverted arch just Zhi Yici excavate shaping, and adjust get out of a predicament or an embarrassing situation and inverted arch height and length;Step 3, top bar, get out of a predicament or an embarrassing situation and inverted arch synchronous construction.A kind of step of large deformation tunnel two that the present invention is provided is few with the step inverted arch profile steel frame closed loop time of band inverted arch two that inverted arch constructing structure and construction method are used, and accumulative deflection is small during convergence, moon driving degree raising.

Description

The step band inverted arch construction method of large deformation tunnel two
Technical field
The invention belongs to construction engineering field, more particularly to a kind of step of large deformation tunnel two band inverted arch construction party Method.
Background technology
Large deformation tunnel excavation, three benching tunnelling methods for using originally are excavated, top bar height 4.45m, middle shoulder height 3.10m, get out of a predicament or an embarrassing situation height 3.10m.Top bar length is maintained at 5m, and middle step length of bench is maintained at 5m, and length of getting out of a predicament or an embarrassing situation is protected Hold 10m.Have the disadvantage that just branch closes cyclic needs 16 days to inverted arch from face is excavated, experiment display, just branch is sealed in large deformation tunnel Deform maximum before closing cyclization, rate of deformation is substantially reduced after closed loop.Being unfavorable for site operation tissue more three benching tunnelling method operations, causing Driving speed is excessively slow.
The content of the invention
To deform big, rate of deformation drop after closed loop before solving the existing benching tunnelling method of large deformation tunnel three excavation just branch closing cyclization It is low, the excessively slow technical problem of driving speed, the present invention provides deformation before a kind of first branch closes cyclization, and less, deformation is few after closed loop, The step band inverted arch construction method of large deformation tunnel two that driving speed speeds.
The step band inverted arch constructing structure of large deformation tunnel two that the present invention is provided includes tunnel, top bar, gets out of a predicament or an embarrassing situation and face upward Arch, the top bar and it is described get out of a predicament or an embarrassing situation it is relatively inboard located at the tunnel, the top bar located at it is described get out of a predicament or an embarrassing situation it is relative Top, the inverted arch is set up in parallel with described getting out of a predicament or an embarrassing situation.
It is described to appear on the stage in the step band a kind of preferred embodiment of inverted arch constructing structure of large deformation tunnel two that the present invention is provided Rank is highly 8.5 meters, and the top bar length is 15-18 meters.
In the step band a kind of preferred embodiment of inverted arch constructing structure of large deformation tunnel two that the present invention is provided, the leave from office Rank band inverted arch excavation height is 4.44 meters.
In the step band a kind of preferred embodiment of inverted arch constructing structure of large deformation tunnel two that the present invention is provided, the leave from office Rank to inverted arch filling termination distance is 6-24 meters.
In the step band a kind of preferred embodiment of inverted arch constructing structure of large deformation tunnel two that the present invention is provided, the inverted arch Fill to two 24-36 meters of linings.
Construction method of the step of large deformation tunnel two with inverted arch constructing structure provided using the present invention is comprised the following steps:
Step one, two steps are excavated:According to country rock situation, tunnel face is divided into two steps and is excavated;
Step 2, top bar, get out of a predicament or an embarrassing situation and inverted arch excavate adjustment:Adjustment top bar height and length, get out of a predicament or an embarrassing situation and inverted arch First Zhi Yici excavates shaping, and adjust get out of a predicament or an embarrassing situation and inverted arch height and length;
Step 3, top bar, get out of a predicament or an embarrassing situation and inverted arch synchronous construction.
In the step band a kind of preferred embodiment of inverted arch construction method of large deformation tunnel two that the present invention is provided, the step In two, get out of a predicament or an embarrassing situation and once excavate drilling depth no more than 3m.
In the step band a kind of preferred embodiment of inverted arch construction method of large deformation tunnel two that the present invention is provided, the step In three, up/down steps keep synchronous construction, drilling depth to be no more than 2 Pin steelframes.
In the step band a kind of preferred embodiment of inverted arch construction method of large deformation tunnel two that the present invention is provided, also including such as Lower step:
After step 4, muck removal, concrete, cyclic stress are sprayed in stand as early as possible.
The step of large deformation tunnel two band inverted arch construction method of the invention has the advantages that:
The step inverted arch profile steel frame closed loop time of band inverted arch two of use is few, during convergence add up deflection it is small, the moon driving degree Improve.The band step inverted arch profile steel frame closed loop time of inverted arch two reduces 6~8 days than three benching tunnelling methods.Add up deflection three during convergence Step construction is 9.8-44.6cm, and two steps band inverted arch construction method is 8-23cm, effectively reduces convergency value.The moon tunnels speed Degree brings up to 45m from 30m.Select rational bench excavation highly, constructing operation can be made convenient, accelerating construction progress.Get out of a predicament or an embarrassing situation Once excavate drilling depth and be no more than 3m, while after muck removal, stand spray concrete, cyclic stress, can avoid due to band inverted arch of getting out of a predicament or an embarrassing situation as early as possible Shaping is once excavated, drilling depth is long caused by causing both sides steelframe simultaneously hanging can cause just branch problems of crack.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will make needed for embodiment description Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings Accompanying drawing, wherein:
Fig. 1 is the step of large deformation tunnel two of present invention offer with a kind of front view of embodiment of inverted arch constructing structure;
Fig. 2 is side view of the step of large deformation tunnel two with inverted arch constructing structure shown in Fig. 1;
Fig. 3 is the technological process of construction method of the step of large deformation tunnel two with inverted arch constructing structure shown in application drawing 1 Figure.
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 carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.
Fig. 1 and Fig. 2 is referred to, wherein Fig. 1 is the step of large deformation tunnel two of present invention offer with inverted arch constructing structure one Plant the front view of embodiment;Fig. 2 is side view of the step of large deformation tunnel two with inverted arch constructing structure shown in Fig. 1.
The step of the large deformation tunnel two band inverted arch constructing structure 1 includes tunnel 11, top bar 12, get out of a predicament or an embarrassing situation 13 and inverted arch 14.The top bar 12 and it is described get out of a predicament or an embarrassing situation 13 relatively inboard located at the tunnel 11, the top bar 12 is under described The opposite upper parts of step 13, the inverted arch 14 13 is set up in parallel with described getting out of a predicament or an embarrassing situation.
The height of the top bar 12 is 8.5 meters, and the length of the top bar 12 is 15-18 meters.
13 band inverted arch 14 excavation heights of getting out of a predicament or an embarrassing situation are 4.44 meters.
It is described get out of a predicament or an embarrassing situation 13 to the filling of the inverted arch 14 termination distance for 6-24 meters.
The inverted arch 14 is filled to two 24-36 meters of linings.
It is construction method of the step of large deformation tunnel two with inverted arch constructing structure shown in application drawing 1 referring to Fig. 3 Process chart.
Comprised the following steps using construction method S1 of the described step of large deformation tunnel two with inverted arch constructing structure:
Step S11, two steps are excavated:According to country rock situation, tunnel face is divided into two steps and is excavated;
Step S12, top bar, get out of a predicament or an embarrassing situation and inverted arch excavate adjustment:Adjustment top bar height and length, get out of a predicament or an embarrassing situation and inverted arch First Zhi Yici excavates shaping, and adjust get out of a predicament or an embarrassing situation and inverted arch height and length;Get out of a predicament or an embarrassing situation and once excavate drilling depth no more than 3m;
Step S13, top bar, get out of a predicament or an embarrassing situation and inverted arch synchronous construction, up/down steps keep synchronous construction, drilling depth to be no more than 2 Pin steelframes;
After step S14, muck removal, concrete, cyclic stress are sprayed in stand as early as possible.
The step of large deformation tunnel two band inverted arch construction method S1 of the invention has the advantages that:
The step inverted arch profile steel frame closed loop time of band inverted arch two of use is few, during convergence add up deflection it is small, the moon driving degree Improve.The band step inverted arch profile steel frame closed loop time of inverted arch two reduces 6~8 days than three benching tunnelling methods.Add up deflection three during convergence Step construction is 9.8-44.6cm, and two steps band inverted arch construction method is 8-23cm, effectively reduces convergency value.The moon tunnels speed Degree brings up to 45m from 30m.Select rational bench excavation highly, constructing operation can be made convenient, accelerating construction progress.Get out of a predicament or an embarrassing situation 13 once excavate drilling depth is no more than 3m, while after muck removal, concrete is sprayed in stand as early as possible, and cyclic stress can be avoided due to 13 bands of getting out of a predicament or an embarrassing situation Inverted arch 14 once excavates shaping, and drilling depth is long caused by causing both sides steelframe simultaneously hanging can cause just branch problems of crack.
Embodiments of the invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills Art field, is included within the scope of the present invention.

Claims (9)

1. a kind of step of large deformation tunnel two band inverted arch constructing structure, it is characterised in that including tunnel, top bar, get out of a predicament or an embarrassing situation and Inverted arch, the top bar and it is described get out of a predicament or an embarrassing situation relatively inboard located at the tunnel, the top bar is located at the phase of getting out of a predicament or an embarrassing situation To top, the inverted arch is set up in parallel with described getting out of a predicament or an embarrassing situation.
2. the step of large deformation tunnel two according to claim 1 is with inverted arch construction method, it is characterised in that the top bar It highly it is 8.5 meters, the top bar length is 15-18 meters.
3. the step of large deformation tunnel two according to claim 1 is with inverted arch construction method, it is characterised in that described to get out of a predicament or an embarrassing situation Band inverted arch excavation height is 4.44 meters.
4. the step of large deformation tunnel two according to claim 1 is with inverted arch construction method, it is characterised in that described to get out of a predicament or an embarrassing situation It it is 6-24 meters to inverted arch filling termination distance.
5. the step of large deformation tunnel two according to claim 1 is with inverted arch construction method, it is characterised in that the inverted arch is filled out It is charged to two lining 24-36 meters.
6. construction method of the step of large deformation tunnel two with inverted arch constructing structure described in a kind of application claim 1, its feature It is to comprise the following steps:
Step one, two steps are excavated:According to country rock situation, tunnel face is divided into two steps and is excavated;
Step 2, top bar, get out of a predicament or an embarrassing situation and inverted arch excavate adjustment:Adjustment top bar height and length, get out of a predicament or an embarrassing situation and branch at the beginning of inverted arch Once excavate shaping, and adjust get out of a predicament or an embarrassing situation and inverted arch height and length;
Step 3, top bar, get out of a predicament or an embarrassing situation and inverted arch synchronous construction.
7. the step of large deformation tunnel two according to claim 6 is with inverted arch construction method, it is characterised in that the step 2 In, get out of a predicament or an embarrassing situation and once excavate drilling depth no more than 3m.
8. the step of large deformation tunnel two according to claim 6 is with inverted arch construction method, it is characterised in that the step 3 In, up/down steps keep synchronous construction, drilling depth to be no more than 2 Pin steelframes.
9. the step of large deformation tunnel two according to claim 6 is with inverted arch construction method, it is characterised in that also including as follows Step:
After step 4, muck removal, concrete, cyclic stress are sprayed in stand as early as possible.
CN201710177072.7A 2017-03-23 2017-03-23 The step band inverted arch construction method of large deformation tunnel two CN106837371A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108256243A (en) * 2018-01-23 2018-07-06 成都希盟科技有限公司 Two step method of tunnel excavation based on BIM technology
CN108386197A (en) * 2018-01-03 2018-08-10 中铁十六局集团第四工程有限公司 A kind of up/down steps band inverted arch method for synchronously constructing based on tunnel bench cut method

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CN102767375A (en) * 2012-08-10 2012-11-07 中国建筑第四工程局有限公司 Tunnel construction method
CN103321644A (en) * 2013-05-29 2013-09-25 王卓 Mechanical mode and control blasting combined tunneling method
CN104612698A (en) * 2015-01-24 2015-05-13 杭州天恒投资建设管理有限公司 Method for constructing upper step middle partition wall of shallow-buried excavation tunnel
CN104879131A (en) * 2015-05-06 2015-09-02 中国电建集团华东勘测设计研究院有限公司 Large-span tunnel excavation method for upper soft and lower hard compound strata
CN104895575A (en) * 2015-06-03 2015-09-09 福建工程学院 High-efficiency rapid construction method for upper-soft lower-hard formation large-section tunnels
CN106121675A (en) * 2016-08-22 2016-11-16 北京市市政工程研究院 Small-sized solution cavity is positioned at tunnel excavation and karst cave treatment method time at the bottom of tunneling inverted arch
CN106194195A (en) * 2016-07-22 2016-12-07 中铁建大桥工程局集团第五工程有限公司 Collapsible Loess District large cross-section tunnel three step is without remaining core soil in advance construction method

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Publication number Priority date Publication date Assignee Title
SU1656130A1 (en) * 1988-04-15 1991-06-15 Горный Институт Кольского Филиала Им.С.М.Кирова Ан Ссср Method of driving the under-vault part of large-span underground structure
CN101539021A (en) * 2009-04-17 2009-09-23 江苏省交通科学研究院股份有限公司 Road tunnel excavation method
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
CN102767375A (en) * 2012-08-10 2012-11-07 中国建筑第四工程局有限公司 Tunnel construction method
CN103321644A (en) * 2013-05-29 2013-09-25 王卓 Mechanical mode and control blasting combined tunneling method
CN104612698A (en) * 2015-01-24 2015-05-13 杭州天恒投资建设管理有限公司 Method for constructing upper step middle partition wall of shallow-buried excavation tunnel
CN104879131A (en) * 2015-05-06 2015-09-02 中国电建集团华东勘测设计研究院有限公司 Large-span tunnel excavation method for upper soft and lower hard compound strata
CN104895575A (en) * 2015-06-03 2015-09-09 福建工程学院 High-efficiency rapid construction method for upper-soft lower-hard formation large-section tunnels
CN106194195A (en) * 2016-07-22 2016-12-07 中铁建大桥工程局集团第五工程有限公司 Collapsible Loess District large cross-section tunnel three step is without remaining core soil in advance construction method
CN106121675A (en) * 2016-08-22 2016-11-16 北京市市政工程研究院 Small-sized solution cavity is positioned at tunnel excavation and karst cave treatment method time at the bottom of tunneling inverted arch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108386197A (en) * 2018-01-03 2018-08-10 中铁十六局集团第四工程有限公司 A kind of up/down steps band inverted arch method for synchronously constructing based on tunnel bench cut method
CN108256243A (en) * 2018-01-23 2018-07-06 成都希盟科技有限公司 Two step method of tunnel excavation based on BIM technology

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