CN103306681B - A kind of tunnel piercing sector rotation construction method - Google Patents
A kind of tunnel piercing sector rotation construction method Download PDFInfo
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- CN103306681B CN103306681B CN201310246831.2A CN201310246831A CN103306681B CN 103306681 B CN103306681 B CN 103306681B CN 201310246831 A CN201310246831 A CN 201310246831A CN 103306681 B CN103306681 B CN 103306681B
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- 238000010276 construction Methods 0.000 title claims abstract description 20
- 238000009412 basement excavation Methods 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 238000004886 process control Methods 0.000 claims abstract description 3
- 238000009434 installation Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 230000007306 turnover Effects 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009435 building construction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
The present invention relates to a kind of tunnel piercing sector rotation construction method, comprise the following steps: 1) excavation supporting: first carry out fan-shaped design of its support, fan-shaped supporting inner radius should more than 1.5 meters, and digging process controls headroom size in scope of design; 2) secondary lining: lining cutting mould bases is by fan-shaped layout, and abutment wall arranges curve steel template.Beneficial effect of the present invention is: solve the difficult problem that inflection threaded list road can not be scope of operation excavation from the other end, main tunnel causes waste in order to opening turnover makes the increasing of its section lengthen, operation is discontinuous, long in time limit; Its technological process is simple, saving of labor, material-saving, the duration is short, efficiency is high; Its product is linear attractive in appearance, meets the fluid characteristics of motion, and economical, societal benefits are very remarkable.
Description
Technical field
The present invention relates to a kind of technical field of building construction, particularly relate to a kind of tunnel piercing sector rotation construction method.
Background technology
In the work progress of the underground passages such as subway walkway, air channel, the urgency that usually can run into tunnel turnover 90 degree is turned round; Beijing Metro No. eight line art museum stations just run into many places; Be wherein the satisfied requirement that is open to traffic between the plug-in device of northwest, set up place's Temporary Ventilation vertical shaft, the wide 4.4m of its main air duct, high 4.2m, at the wide 3.6m in secondary air channel with ventilating shaft opening part, high 2.5m.
If adopt traditional tunnel turnover construction method, working procedure is shown in Fig. 5, and its concrete steps are: 1) excavate main tunnel; 2) the main tunnel of lining cutting (reserved time tunnel opening place); 3) excavation time tunnel; 4) lining cutting time tunnel; In order to meet time tunnel opening technique, need to strengthen main tunnel cross-section, lengthen, opening part needs to arrange reinforcing ring.
The defect of conventional construction method is: traditional excavation method can only first excavate main tunnel, rear excavation time tunnel; Can not solve because the duration is tight, side, main tunnel cannot provide the scope of operation, and contrary time side, tunnel shaft hoisting device resource leaves unused, but cannot implement the contradiction of tunnel excavation.In addition: its main tunnel cross-section of traditional excavation method has carried out using function unwanted increasing lengthening, operation is discontinuous, long in time limit, can not meet construction period.
Summary of the invention
The object of this invention is to provide a kind of set of tunneling construction method, to overcome currently available technology above shortcomings.
The object of the invention is to be achieved through the following technical solutions:
A kind of tunnel piercing sector rotation construction method, comprises the following steps:
1) excavation supporting: first carry out fan-shaped design of its support, fan-shaped supporting inner radius should more than 1.5 meters, and digging process controls headroom size in scope of design, and inner side Grill space should at about 0.4 meter or following; Outside Grill space is 0.6 meter ~ 0.8 meter; 1 ~ 2 half Pin grid is added between the whole Pin grid in outside; Add the position of half Pin grid, longitudinal dowel spacing is about 0.5 meter, longitudinal dowel arrange up and down put and with grid firm welding; When tunnel excavation headroom is more than 5.5m, can select to arrange median septum according to field condition.Each Pin grid is numbered, controls the installation site of each Pin grid according to numbering, control excavation headroom size according to the installation site of grid; And
2) secondary lining: lining cutting mould bases is by fan-shaped layout, and abutment wall arranges curve steel template, and the inner side spacing of lining cutting mould bases is about 0.4 meter, and outside spacing is 0.6 meter ~ 0.8 meter, the arch template of lining cutting mould bases adopts plank, and plank upper surface lays veneer.
Beneficial effect of the present invention is: solve the difficult problem that inflection threaded list road can not be scope of operation excavation from the other end, main tunnel causes waste in order to opening turnover makes the increasing of its section lengthen, operation is discontinuous, long in time limit; Its technological process is simple, saving of labor, material-saving, the duration is short, efficiency is high; Its product is linear attractive in appearance, meets the fluid characteristics of motion, and economical, societal benefits are very remarkable.
Accompanying drawing explanation
With reference to the accompanying drawings the present invention is described in further detail below.
Fig. 1 is the operation schematic diagram of tunnel piercing sector rotation construction method described in the embodiment of the present invention;
Fig. 2 is the sectional view of A-A line in Fig. 1;
Fig. 3 is the grid arrangement diagram of tunnel piercing sector rotation construction method described in the embodiment of the present invention;
Fig. 4 is the sectional view of B-B line in Fig. 3;
Fig. 5 is the construction operation schematic diagram in prior art 90 degree turnover tunnel.
In figure:
1, excavation supporting line; 2, secondary lining line; 3, stopping; 4, equipment room; 5, ventilating shaft; 6, construction direction; 7, whole Pin grid; 8, half Pin grid; 9, dowel; I ~ IV, in prior art the first step of working procedure to the 4th step.
Detailed description of the invention
As shown in Fig. 1 ~ Fig. 4, a kind of tunnel piercing sector rotation construction method described in the embodiment of the present invention, its concrete steps are as follows:
1, excavation supporting
Arranged preliminary bracing grid before excavation and design, its main points are: the inner side of curve radius is suitable >=and 1.5m; Inner side Grill space ≈ 0.4m or as far as possible reduction; Outside Grill space 0.6 ~ 0.8m(or according to actual conditions adjustment); 1 ~ 2 half Pin grid 8 is added between the whole Pin grid 7 in outside; It adds the position of half Pin grid 8, and longitudinal dowel 9 spacing ≈ 0.5m is strengthened, and the arrangement of longitudinal dowel about 9 is put, and with grid firm welding; When tunnel excavation headroom is more than 5.5m, consider to arrange median septum; Strict control headroom size in excavation, its main points are: be numbered each Pin grid, adopt coordinate method to control the installation site of each Pin grid.
2, secondary lining
Lining cutting mould bases presses fan-shaped layout, inner side spacing ≈ 0.4m, outside spacing 0.6 ~ 0.8m; Abutment wall arranges curve steel template, vertical array; Arch template adopts plank, and plank upper surface lays veneer, and scene is installed according to real size blanking.Other method of operating is all by ripe construction technology.
The fan-shaped erection by swing construction method of tunnel piercing provided by the invention, solves the difficult problem that inflection threaded list road can not excavate from the other end scope of operation, main tunnel causes waste in order to open section increasing lengthens, operation is discontinuous, long in time limit.
The present invention is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; no matter but any change is done in its shape or structure; every have identical with the application or akin technical scheme, all drops within protection scope of the present invention.
Claims (4)
1. a tunnel piercing sector rotation construction method, is characterized in that, comprises the following steps:
1) excavation supporting: first carry out fan-shaped design of its support, fan-shaped supporting inner radius should more than 1.5 meters, and digging process controls headroom size in scope of design, and inner side Grill space should be no more than 0.4 meter; Outside Grill space is 0.6 meter ~ 0.8 meter; 1 ~ 2 half Pin grid is added between the whole Pin grid in outside; And
2) secondary lining: lining cutting mould bases is by fan-shaped layout, and abutment wall arranges curve steel template, and the inner side spacing of lining cutting mould bases is 0.4 meter, and outside spacing is 0.6 meter ~ 0.8 meter.
2. tunnel piercing sector rotation construction method according to claim 1, is characterized in that: in step 1), and the longitudinal dowel spacing in position of adding half Pin grid is about 0.5 meter, longitudinal dowel arrange up and down put and with grid firm welding.
3. tunnel piercing sector rotation construction method according to claim 2, is characterized in that: in step 1), when tunnel excavation headroom is more than 5.5m, can select to arrange median septum according to field condition.
4. tunnel piercing sector rotation construction method according to claim 3, is characterized in that: in step 1), is numbered each Pin grid, controls the installation site of each Pin grid according to numbering, controls excavation headroom size according to the installation site of grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310246831.2A CN103306681B (en) | 2013-06-20 | 2013-06-20 | A kind of tunnel piercing sector rotation construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310246831.2A CN103306681B (en) | 2013-06-20 | 2013-06-20 | A kind of tunnel piercing sector rotation construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103306681A CN103306681A (en) | 2013-09-18 |
| CN103306681B true CN103306681B (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310246831.2A Expired - Fee Related CN103306681B (en) | 2013-06-20 | 2013-06-20 | A kind of tunnel piercing sector rotation construction method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611115B (en) * | 2018-12-14 | 2021-03-19 | 中铁北京工程局集团城市轨道交通工程有限公司 | Primary support construction method for small-radius turning |
| CN110374635B (en) * | 2019-07-31 | 2020-07-07 | 中国三峡建设管理有限公司 | Concrete construction method for large-section different-gradient bevel part |
| CN110566239B (en) * | 2019-10-11 | 2020-10-13 | 中建八局轨道交通建设有限公司 | Mounting and positioning method for grid support at turning position of underground excavation tunnel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3001376A1 (en) * | 1980-01-16 | 1981-07-23 | Bochumer Eisenhütte Heintzmann GmbH & Co, 4630 Bochum | Bend section for mine gallery support structure - has arched radiating from inner corner, with channels connected by intermediate adaptors |
| CN1242454A (en) * | 1998-07-21 | 2000-01-26 | 陈建源 | Road crossing design or layout for vehicles passing through and vehicles passing mode therefor |
| CN1952350A (en) * | 2006-10-27 | 2007-04-25 | 中铁四局集团有限公司 | Rapid-construction method for rapid change of small-section into large-section tunnel |
| CN101586346A (en) * | 2008-11-10 | 2009-11-25 | 郑州市市政工程总公司 | Method for constructing multi-functional metro interchange station complex |
| CN102182465A (en) * | 2011-04-01 | 2011-09-14 | 长安大学 | Tunnel-entering construction method for tunnel |
| CN202851011U (en) * | 2012-10-26 | 2013-04-03 | 中铁二十二局集团第六工程有限公司 | Existing grate and novel grate connecting system in tunnel construction |
-
2013
- 2013-06-20 CN CN201310246831.2A patent/CN103306681B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3001376A1 (en) * | 1980-01-16 | 1981-07-23 | Bochumer Eisenhütte Heintzmann GmbH & Co, 4630 Bochum | Bend section for mine gallery support structure - has arched radiating from inner corner, with channels connected by intermediate adaptors |
| CN1242454A (en) * | 1998-07-21 | 2000-01-26 | 陈建源 | Road crossing design or layout for vehicles passing through and vehicles passing mode therefor |
| CN1952350A (en) * | 2006-10-27 | 2007-04-25 | 中铁四局集团有限公司 | Rapid-construction method for rapid change of small-section into large-section tunnel |
| CN101586346A (en) * | 2008-11-10 | 2009-11-25 | 郑州市市政工程总公司 | Method for constructing multi-functional metro interchange station complex |
| CN102182465A (en) * | 2011-04-01 | 2011-09-14 | 长安大学 | Tunnel-entering construction method for tunnel |
| CN202851011U (en) * | 2012-10-26 | 2013-04-03 | 中铁二十二局集团第六工程有限公司 | Existing grate and novel grate connecting system in tunnel construction |
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| CN103306681A (en) | 2013-09-18 |
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Granted publication date: 20150909 |