CN103628889A - Quick sealing method for excavating phyllite stratum tunnel - Google Patents
Quick sealing method for excavating phyllite stratum tunnel Download PDFInfo
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- CN103628889A CN103628889A CN201310633470.7A CN201310633470A CN103628889A CN 103628889 A CN103628889 A CN 103628889A CN 201310633470 A CN201310633470 A CN 201310633470A CN 103628889 A CN103628889 A CN 103628889A
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Abstract
The invention discloses a quick sealing method for excavating a phyllite stratum tunnel. The method comprises four steps, wherein a tunnel face is subjected to advanced small conduit grouting supporting before being excavated in the step (1); grouting anchor rods with lengths L of more than or equal to 8m are adopted as foot locking anchor rods of steel frames of each step in the step (2); surrounding rocks behind primary supports are subjected to grouting reinforcement after the primary supporting of each step; in each excavation cycle in the step (4), the excavation length of the upper step is 1 frame, the middle step is 2 to 3 frames, the lower step is 2 to 3 frames, and the tunnel bottom is 4 to 6m. According to the excavation method, the excavation lengths of the middle and lower steps and the tunnel bottom in each cycle are increased under the condition of no changes in the footage of the upper step in each cycle, the primary supporting closing time is shortened, the deformation of the tunnel is effectively controlled, the engineering cost is greatly lowered, the construction safety is ensured, the construction progress is accelerated, and the method is easy to operate, and has higher popularization and application value.
Description
Technical field:
The invention belongs to a kind of method for tunnel construction, particularly a kind of phyllite formation tunnel excavates quick enclosure method.
Background technology:
Phyllite tunnel for large section, more common excavation method has benching tunnelling method, short benching tunnelling method, three step seven footworks, CD method, CRD method, side heading method etc., in these methods or branch more, or each drilling depth is less, make the full section sealing of preliminary bracing in tunnel become ring overlong time, not only easily produce larger distortion, also affected construction speed and safety.In three step seven footwork work progresss, in each excavation length of getting out of a predicament or an embarrassing situation be generally no more than 2 Pin, inverted arch excavation length is generally no more than 3m, speed of application is slow, preliminary bracing closing time is long.
Summary of the invention:
Object of the present invention is just to overcome above-mentioned the deficiencies in the prior art, and provide a kind of phyllite formation tunnel to excavate quick enclosure method, the method be take three step seven footworks as basis, overcome the short preliminary bracing of each work plane drilling depth long deficiency off-period existing in three step seven footworks, the method is applicable to the weak phyllite formation tunnel of large section excavation construction.
As above design, technical scheme of the present invention is: a kind of phyllite formation tunnel excavates quick enclosure method and comprises the steps:
(1) before face excavation, face is carried out to the pre-supporting of advanced tubule slip casting;
(2) lock foot anchoring stock of each step steelframe adopts the grouted anchor bar of length L >=8m;
(3) each step carries out grouting and reinforcing to preliminary bracing country rock behind after completing preliminary bracing;
(4) the every length of the cycle of each bench excavation: 1 Pin that tops bar, middle step 2-3 Pin, the 2-3 Pin that gets out of a predicament or an embarrassing situation, 4-6m at the bottom of tunnel.
The every length of the cycle of above-mentioned each bench excavation: 1 Pin that tops bar, middle step 3 Pin, 3 Pin that get out of a predicament or an embarrassing situation, 5m at the bottom of tunnel.
The present invention has following advantage and good effect:
1, the present invention is in the situation that every cyclic advance of topping bar is constant, by strengthening superpower pre-supporting, lengthen lock foot anchoring stock length, improve in, get out of a predicament or an embarrassing situation and tunnel at the bottom of every circulation excavation length and radial grouting reinforce adjoining rock, shortened preliminary bracing closing time, effectively controlled tunnel deformation, greatly reduce engineering cost, accelerated construction speed, simple to operate, there is higher application value.
2, to have retained three step seven footwork construction spaces larger in the present invention, facilitates mechanized construction, advantage that can the parallel operations of many scope of operations.Particularly weak phyllite section or soil property location can adopt excavator directly to excavate, and work efficiency is higher.
3, the present invention, when geological conditions changes, is convenient to change flexibly, in time working procedure, adjusts construction method.
Accompanying drawing explanation:
Fig. 1: weak phyllite tunnel excavation method schematic cross-sectional view.
In figure: 1 for topping bar; 2,3 is middle step; 4,5 for getting out of a predicament or an embarrassing situation; 6-1～6-3 is Core Soil; 7 be tunnel at the bottom of; 8 is advanced tubule; 9 is grouting rock bolt.
The specific embodiment:
As shown in Figure 1, the quick enclosure method of phyllite tunnel excavation, comprises the steps:
(1) utilize the vertical steelframe of cocycle frame to perform advanced tubule cement injection.
(2) adopt machinery to coordinate artificial or weak explosion partial excavation to top bar 1, perform 1 the periphery preliminary bracing of topping bar, drilling depth length is 1 Pin.Steelframe lock foot anchoring stock adopts the grouting rock bolt of L=8m, diameter of phi 22, left and right each 2.Preliminary bracing concrete carries out radial grouting to 1 after meeting the requirements of intensity.
(3) lag behind in the staggered excavation of 1 segment distance 2,3, step, perform preliminary bracing, every cyclic advance length is 3 Pin.Steelframe lock foot anchoring stock adopts the grouting rock bolt of 2 L=8m, diameter of phi 22.Preliminary bracing concrete meets the requirements of after intensity 2,3, centering step respectively and carries out radial grouting.
(4) lag behind 3 interleaved 4,5, steps that dig down of a segment distance, perform preliminary bracing, every cyclic advance length is 3 Pin.Steelframe lock foot anchoring stock adopts the grouting rock bolt of 2 L=8m, diameter of phi 22.Preliminary bracing concrete carries out radial grouting to getting out of a predicament or an embarrassing situation 4,5 respectively after meeting the requirements of intensity.
(5) divide 6 of bench excavation Core Soils.
(6) according to steelframe spacing, by every length of the cycle 5m, excavate 7, and seal in time preliminary bracing.
The present invention has effectively controlled tunnel deformation, has greatly reduced engineering cost, has guaranteed construction safety, has accelerated construction speed, simple to operate, has higher application value.
Although disclose for the purpose of illustration embodiments of the invention, but it will be appreciated by those skilled in the art that: within not departing from the spirit and scope of the present invention and claims, various replacements, variation and modification are all possible, therefore, scope of the present invention is not limited to the disclosed content of embodiment.
Claims (2)
1. phyllite formation tunnel excavates a quick enclosure method, it is characterized in that: comprise the steps:
(1) before face excavation, face is carried out to the pre-supporting of advanced tubule slip casting;
(2) lock foot anchoring stock of each step steelframe adopts the grouted anchor bar of length L >=8m;
(3) each step carries out grouting and reinforcing to preliminary bracing country rock behind after completing preliminary bracing;
(4) the every length of the cycle of each bench excavation: 1 Pin that tops bar, middle step 2-3 Pin, the 2-3 Pin that gets out of a predicament or an embarrassing situation, 4-6m at the bottom of tunnel.
2. phyllite formation tunnel according to claim 1 excavates quick enclosure method, it is characterized in that: the every length of the cycle of above-mentioned each bench excavation: 1 Pin that tops bar, middle step 3 Pin, 3 Pin that get out of a predicament or an embarrassing situation, 5m at the bottom of tunnel.
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| CN201310633470.7A CN103628889A (en) | 2013-11-28 | 2013-11-28 | Quick sealing method for excavating phyllite stratum tunnel |
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| CN201310633470.7A CN103628889A (en) | 2013-11-28 | 2013-11-28 | Quick sealing method for excavating phyllite stratum tunnel |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533451A (en) * | 2014-12-05 | 2015-04-22 | 中国电建集团成都勘测设计研究院有限公司 | Tunnel advance pre-supporting technology used in discrete gravelly soil and broken surrounding rock |
| 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 |
| CN107013222A (en) * | 2017-05-28 | 2017-08-04 | 中铁五局集团有限公司 | A kind of the middle regions of the Yunnan Province red beds tunnel milling digging construction method close to existing railway |
| CN107060840A (en) * | 2017-05-07 | 2017-08-18 | 中铁十八局集团有限公司 | A kind of construction method of large cross-section tunnel V grades of country rock excavation supportings |
| CN107288653A (en) * | 2017-06-27 | 2017-10-24 | 中铁十局集团第四工程有限公司 | A kind of the benching tunnelling method excavation supporting structure of weak surrounding rock large cross-section tunnel double -side approach three and construction method |
| CN108131145A (en) * | 2017-12-20 | 2018-06-08 | 中铁五局集团有限公司 | A kind of construction method of super-span tunnel excavation support |
| CN109469500A (en) * | 2018-12-10 | 2019-03-15 | 中交公局桥隧工程有限公司 | A kind of anchor rod construction process guaranteeing safety, quality |
| CN109751054A (en) * | 2019-03-27 | 2019-05-14 | 中铁隧道局集团有限公司 | Shape of a hoof large-section tunnel construction method |
| CN110230496A (en) * | 2019-06-14 | 2019-09-13 | 中国铁建大桥工程局集团有限公司 | A kind of three step of big cross section soft stratum tunnel, four step is interlocked construction method |
| CN110924952A (en) * | 2019-12-06 | 2020-03-27 | 中铁二院贵阳勘察设计研究院有限责任公司 | Construction method for three-step seven-step normal medium rock pillar method conversion of super-large section tunnel |
| CN112523788A (en) * | 2020-11-17 | 2021-03-19 | 长安大学 | Method for improving stability of primary support structure in soft rock tunnel construction |
| CN113404517A (en) * | 2021-08-03 | 2021-09-17 | 福建工程学院 | Construction method for mud-bursting and water-flushing of tunnel |
| CN114198105A (en) * | 2021-12-15 | 2022-03-18 | 中铁隧道局集团有限公司 | Construction method for excavating underground tunnel body of broken water-rich phyllite |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105131A (en) * | 2007-08-17 | 2008-01-16 | 中铁十二局集团有限公司 | Tunnel dredging method suitable for railway large section IV, V class rock tunnel |
| CN102562099A (en) * | 2012-03-15 | 2012-07-11 | 中铁二十三局集团第四工程有限公司 | Method for carrying out rapid face excavation construction of loess tunnel by double rows of small conduits |
| CN102606162A (en) * | 2012-02-08 | 2012-07-25 | 中铁四局集团第二工程有限公司 | Quick construction method for weak surrounding rock shallowly-buried easily-collapsed area of tunnel |
| CN103234403A (en) * | 2013-04-24 | 2013-08-07 | 中国科学院武汉岩土力学研究所 | Static blasting construction method for highway tunnel |
-
2013
- 2013-11-28 CN CN201310633470.7A patent/CN103628889A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105131A (en) * | 2007-08-17 | 2008-01-16 | 中铁十二局集团有限公司 | Tunnel dredging method suitable for railway large section IV, V class rock tunnel |
| CN102606162A (en) * | 2012-02-08 | 2012-07-25 | 中铁四局集团第二工程有限公司 | Quick construction method for weak surrounding rock shallowly-buried easily-collapsed area of tunnel |
| CN102562099A (en) * | 2012-03-15 | 2012-07-11 | 中铁二十三局集团第四工程有限公司 | Method for carrying out rapid face excavation construction of loess tunnel by double rows of small conduits |
| CN103234403A (en) * | 2013-04-24 | 2013-08-07 | 中国科学院武汉岩土力学研究所 | Static blasting construction method for highway tunnel |
Non-Patent Citations (3)
| Title |
|---|
| 史振宇: "包家山特长隧道富水千枚岩地段快速施工技术", 《隧道建设》 * |
| 安国栋: "《高速铁路施工组织设计》", 31 October 2009, 中国铁道出版社 * |
| 邵大鹏: "软岩大变形隧道成因分析及控制施工技术", 《四川建材》 * |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533451A (en) * | 2014-12-05 | 2015-04-22 | 中国电建集团成都勘测设计研究院有限公司 | Tunnel advance pre-supporting technology used in discrete gravelly soil and broken surrounding rock |
| 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 |
| CN107060840A (en) * | 2017-05-07 | 2017-08-18 | 中铁十八局集团有限公司 | A kind of construction method of large cross-section tunnel V grades of country rock excavation supportings |
| CN107060840B (en) * | 2017-05-07 | 2019-04-30 | 中铁十八局集团有限公司 | A kind of construction method of large cross-section tunnel V grades of country rock excavation supportings |
| CN107013222A (en) * | 2017-05-28 | 2017-08-04 | 中铁五局集团有限公司 | A kind of the middle regions of the Yunnan Province red beds tunnel milling digging construction method close to existing railway |
| CN107288653A (en) * | 2017-06-27 | 2017-10-24 | 中铁十局集团第四工程有限公司 | A kind of the benching tunnelling method excavation supporting structure of weak surrounding rock large cross-section tunnel double -side approach three and construction method |
| CN108131145A (en) * | 2017-12-20 | 2018-06-08 | 中铁五局集团有限公司 | A kind of construction method of super-span tunnel excavation support |
| CN109469500A (en) * | 2018-12-10 | 2019-03-15 | 中交公局桥隧工程有限公司 | A kind of anchor rod construction process guaranteeing safety, quality |
| CN109751054A (en) * | 2019-03-27 | 2019-05-14 | 中铁隧道局集团有限公司 | Shape of a hoof large-section tunnel construction method |
| CN110230496A (en) * | 2019-06-14 | 2019-09-13 | 中国铁建大桥工程局集团有限公司 | A kind of three step of big cross section soft stratum tunnel, four step is interlocked construction method |
| CN110924952A (en) * | 2019-12-06 | 2020-03-27 | 中铁二院贵阳勘察设计研究院有限责任公司 | Construction method for three-step seven-step normal medium rock pillar method conversion of super-large section tunnel |
| CN112523788A (en) * | 2020-11-17 | 2021-03-19 | 长安大学 | Method for improving stability of primary support structure in soft rock tunnel construction |
| CN112523788B (en) * | 2020-11-17 | 2023-03-10 | 长安大学 | Method for improving stability of primary support structure in soft rock tunnel construction |
| CN113404517A (en) * | 2021-08-03 | 2021-09-17 | 福建工程学院 | Construction method for mud-bursting and water-flushing of tunnel |
| CN113404517B (en) * | 2021-08-03 | 2023-09-22 | 福建工程学院 | Construction method for tunnel mud bursting and water flushing |
| CN114198105A (en) * | 2021-12-15 | 2022-03-18 | 中铁隧道局集团有限公司 | Construction method for excavating underground tunnel body of broken water-rich phyllite |
| CN114198105B (en) * | 2021-12-15 | 2023-06-30 | 中铁隧道局集团有限公司 | Construction method for excavating holes under crushed water-rich phyllite |
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Application publication date: 20140312 |