CN102562076A - Underground excavation construction technology for large cross-section subway station under geological condition of soft upper layer and hard lower layer - Google Patents
Underground excavation construction technology for large cross-section subway station under geological condition of soft upper layer and hard lower layer Download PDFInfo
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- CN102562076A CN102562076A CN2011104379742A CN201110437974A CN102562076A CN 102562076 A CN102562076 A CN 102562076A CN 2011104379742 A CN2011104379742 A CN 2011104379742A CN 201110437974 A CN201110437974 A CN 201110437974A CN 102562076 A CN102562076 A CN 102562076A
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Abstract
The invention provides an underground excavation construction technology for a large cross-section subway station under the geological condition of a soft upper layer and a hard lower layer, wherein the underground excavation construction technology solves the technical difficult problems in the prior art that the blasting operation cannot satisfy the strict process requirements of an arch covering method, no effective water resistance construction method is adopted at an arch wall joint part, and the construction progress is slow. The underground excavation construction technology comprises the steps as follows: an advance support is applied; an upper step left pilot tunnel (1), an upper step right pilot tunnel (2), a middle step left pilot tunnel (3), a middle step right pilot tunnel (4), a lower step left pilot tunnel (5) and a lower step right pilot tunnel (6) are respectively excavated in a staggered manner; the primary support is carried out in time; an upper step of a core rock pillar (7) is excavated finally, and the arch part primary support is applied in time; the temporary support is dismantled section by section, wherein the depth of one section is 6 m; in addition, the rest part of the core rock pillar (7) used as an isolated island is exploded and dug up, and a bottom plate is laid. The underground excavation construction technology is particularly suitable for the construction of the large cross-section subway station under the geological condition of the soft upper layer and the hard lower layer.
Description
Technical field
The present invention relates to a kind of big section tunneling metro station construction technology, particularly a kind of big section tunneling metro station construction technology under last soft hard place matter condition down.
Background technology
Mainly gather diffusingly as what personnel assembled, evacuate and changed to the subway station, and it is shallow to have determined when it is constructed, should possess buried depth, the characteristics that section is big.In the prior art, the technology of subway station shallow buried covered excavation and worker's method are a lot, as: double side wall pilot tunnel method, CRD worker's method etc.Double side wall base tunnel construction method is a kind of typical shallow buried covered excavation construction method; Work progress is that big section is divided into several light sections earlier; Each light section is closed into the ring excavation alone; The ring ring is nested, and finally forms the big section of designing requirement, in the shallow buried covered excavation underground construction of big section, gets number of applications.Temporary lining system wherein adopts the I22 i iron to support and adds sprayed mortar well word support system; It is big to have intensity; The characteristics that space rigidity is big; Can effectively retrain vault and sink and the periphery convergence, effectively control surface subsidence, for the method that does not need bursting work or explosion only to be best suited for as the geological condition of less important work.It is a kind of worker's method that develops for last soft hard geological conditions down specially that arch covers method, but itself is a kind of worker's method of quite being disputed on.At first, this method has been run counter in underground engineering construction, along making the not contrary basic principle of doing; Secondly, arch covers method and requires big arch springing will place on the rock mass of weathering and gentle breezeization, and geology has inhomogeneities; Some geology sections in the subway station possibly meet the requirement that arch covers method, and not outer geology sections; Do not possess the condition of making big arch springing, and technological requirement is relatively stricter to the excavation at big arch springing place, bursting work is difficult to guarantee that the rock mass at big arch springing place is complete.Arch covers method also owing to adopt contrary sequence method, does not still have effective waterproof construction method at the arch wall binding site.In addition, arch covers method and also has the slower defective of construction speed.
Summary of the invention
The invention provides big section subway station tunneling construction technology under a kind of soft hard place matter condition down; The bursting work that has solved the prior art existence is to " double side wall base tunnel "; The destruction of temporary lining systems such as " CRD worker's methods " and cause the problem of initial stage system unstability, and strict technological requirement and arch wall binding site that arch covers method do not have effective waterproof construction method and the slow technical barrier of construction speed.
The present invention solves above technical problem through following scheme:
Big section subway station tunneling construction technology under a kind of soft hard place matter condition down may further comprise the steps:
The first step, execute and make advance support, respectively excavation top bar left base tunnel with top bar right base tunnel, in time do preliminary bracing, on the excavation direction, dark 15 meters of the cutting depths of the left base tunnel of topping bar than the cutting depth of the right base tunnel of topping bar;
Second step, step left side base tunnel and the right base tunnel of middle step in the excavation respectively; In time do preliminary bracing; On the excavation direction, shallow 15 meters of the cutting depths of middle step left side base tunnel, shallow 15 meters of the cutting depths of the right base tunnel of middle step than the cutting depth of the right base tunnel of topping bar than the cutting depth of the left base tunnel of topping bar;
The 3rd goes on foot, excavates respectively the get out of a predicament or an embarrassing situation left base tunnel and the right base tunnel of getting out of a predicament or an embarrassing situation; In time do preliminary bracing; On the excavation direction, the cutting depth of the left base tunnel of getting out of a predicament or an embarrassing situation than in shallow 15 meters of the cutting depth of step left side base tunnel, the cutting depth of the right base tunnel of getting out of a predicament or an embarrassing situation than in shallow 15 meters of the cutting depth of the right base tunnel of step;
Topping bar of the 4th step, excavation core rock pillar, and in time execute and do the arch preliminary bracing;
The 5th step, with 6 meters dark be one section, temporary lining is removed in segmentation, has torn one section open and has utilized isolated island as operation platform immediately; Construction performs splash guard and secondary lining; Note during dismounting, when secondary lining intensity reaches code requirement, could remove the temporary lining of next section;
The remaining part as the core rock pillar of isolated island is excavated in the 6th step, explosion, executes and makes base plate;
The 7th step, the construction of station internal construction and finishing.
The present invention is particularly suitable for construction that the subway station of big section under the last soft down hard place matter condition is carried out, can practice thrift a large amount of supports, has not only accelerated the construction speed of secondary lining, has also reduced construction cost.
Description of drawings
Fig. 1 be of the present invention on big section face each base tunnel plane arrangement structure sketch map;
Fig. 2 be of the present invention on big section face first step construction technology excavation sketch map;
Fig. 3 be of the present invention on big section face the second step construction technology excavation sketch map;
Fig. 4 be of the present invention on big section face the 3rd step construction technology excavation sketch map;
Fig. 5 be of the present invention on big section face the 4th step construction technology excavation sketch map;
Fig. 6 be of the present invention on big section face the 5th step construction technology excavation sketch map;
Fig. 7 be of the present invention on big section face the 6th step construction technology excavation sketch map;
Fig. 8 be of the present invention on big section face the 7th step construction technology excavation sketch map.
Specific embodiment
Below in conjunction with accompanying drawing the present invention is further specified:
Big section subway station tunneling construction technology under a kind of soft hard place matter condition down may further comprise the steps:
The first step, execute and make advance support, respectively excavation top bar left base tunnel 1 with top bar right base tunnel 2, in time do preliminary bracing, on the excavation direction, dark 15 meters of the cutting depths of the left base tunnel 1 of topping bar than the cutting depth of the right base tunnel 2 of topping bar;
Second step, step left side base tunnel 3 and the right base tunnel 4 of middle step in the excavation respectively; In time do preliminary bracing; On the excavation direction; Shallow 15 meters of the cutting depths of middle step left side base tunnel 3 than the cutting depth of the left base tunnel 1 of topping bar, shallow 15 meters of the cutting depths of the right base tunnel 4 of middle step than the cutting depth of the right base tunnel 2 of topping bar;
The 3rd goes on foot, excavates respectively the get out of a predicament or an embarrassing situation left base tunnel 5 and the right base tunnel 6 of getting out of a predicament or an embarrassing situation; In time do preliminary bracing; On the excavation direction; Get out of a predicament or an embarrassing situation left base tunnel 5 cutting depth than in shallow 15 meters of the cutting depth of step left side base tunnel 3, the cutting depth of the right base tunnel 6 of getting out of a predicament or an embarrassing situation than in shallow 15 meters of the cutting depth of the right base tunnel 4 of step;
Topping bar of the 4th step, excavation core rock pillar 7, and in time execute and do the arch preliminary bracing;
The 5th step, with 6 meters dark be one section, temporary lining is removed in segmentation, has torn one section open and has utilized isolated island as operation platform immediately; Construction performs splash guard and secondary lining; Note during dismounting, when secondary lining intensity reaches code requirement, could remove the temporary lining of next section;
The remaining part as the core rock pillar 7 of isolated island is excavated in the 6th step, explosion, executes and makes base plate;
The 7th step, the construction of station internal construction and finishing.
The present invention has the space temporary lining system of bilateral base tunnel worker method, and it is big to have intensity, and the characteristics that rigidity is big can be sunk and the periphery convergence by the operative constraint vault, can effectively control surface subsidence.The remaining isolated island of core rock pillar of the present invention is after Second Lining Construction is accomplished, to carry out Blasting Excavation, and temporary lining this moment is removed, and the bursting work of isolated island can not exert an influence to structure, has guaranteed the safety of construction.
Claims (1)
1. big section subway station tunneling construction technology under the last soft down hard place matter condition is characterized in that, may further comprise the steps:
The first step, execute and make advance support, top bar left base tunnel (1) and the right base tunnel (2) of topping bar of excavation in time done preliminary bracing respectively, excavating on the direction top bar dark 15 meters of the cutting depth of right base tunnel (2) of the cutting depth ratio of the left base tunnel (1) of topping bar;
Second step, step left side base tunnel (3) and middle step right side base tunnel (4) in the excavation respectively; In time do preliminary bracing; On the excavation direction; In top bar shallow 15 meters of the cutting depth of left base tunnel (1) of the cutting depth ratio of step left side base tunnel (3), top bar shallow 15 meters of the cutting depth of right base tunnel (2) of the cutting depth ratio of the right base tunnel of middle step (4);
The 3rd goes on foot, excavates respectively the get out of a predicament or an embarrassing situation left base tunnel (5) and the right base tunnel (6) of getting out of a predicament or an embarrassing situation; In time do preliminary bracing; On the excavation direction; Get out of a predicament or an embarrassing situation left base tunnel (5) cutting depth than in shallow 15 meters of the cutting depth of step left side base tunnel (3), the cutting depth of the right base tunnel (6) of getting out of a predicament or an embarrassing situation than in shallow 15 meters of the cutting depth of the right base tunnel of step (4);
Topping bar of the 4th step, excavation core rock pillar (7), and in time execute and do the arch preliminary bracing;
The 5th step, with 6 meters dark be one section, temporary lining is removed in segmentation, has torn one section open and has utilized isolated island as operation platform immediately; Construction performs splash guard and secondary lining; Note during dismounting, when secondary lining intensity reaches code requirement, could remove the temporary lining of next section;
The remaining part as the core rock pillar (7) of isolated island is excavated in the 6th step, explosion, executes and makes base plate;
The 7th step, the construction of station internal construction and finishing.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758642A (en) * | 2012-07-16 | 2012-10-31 | 中铁隧道集团有限公司 | Long-span tunnel overlapping carrying arch structure for upper-soft and lower-hard stratum and construction method thereof |
| CN102758632A (en) * | 2012-07-19 | 2012-10-31 | 中铁隧道集团有限公司 | Rock stratum double initial support layering method for establishing large-scale underground structure |
| CN104047623A (en) * | 2014-06-06 | 2014-09-17 | 同济大学 | Large-span grotto excavation construction method |
| CN104763435A (en) * | 2015-03-02 | 2015-07-08 | 中国建筑第八工程局有限公司 | Construction method of shallow-buried excavation type large cross section of tunnel in tail slag filling area |
| CN104847362A (en) * | 2015-01-29 | 2015-08-19 | 中铁二院工程集团有限责任公司 | Large-span subway station underground excavation construction method for hard rock stratum |
| CN105065032A (en) * | 2015-07-29 | 2015-11-18 | 上海市隧道工程轨道交通设计研究院 | Large cross-section tunnel supporting system construction method applicable to steep dip layered rock mass |
| CN106368711A (en) * | 2016-10-12 | 2017-02-01 | 中建局集团第六建筑有限公司 | Ultra-shallow buried rectangular large-section four-step underground excavation construction method |
| CN106401591A (en) * | 2016-12-07 | 2017-02-15 | 中铁四局集团有限公司 | Construction method for small-angle downward-penetrating high-speed grid tunnel |
| CN106499417A (en) * | 2016-10-25 | 2017-03-15 | 中铁隧道集团二处有限公司 | The reserved T word rock beam rock pillar constructions of extra-large cross-section resistant Capacity of Shallow-buried Subway Station |
| CN106567718A (en) * | 2015-10-10 | 2017-04-19 | 中铁隧道勘测设计院有限公司 | Construction method for composite stratum single-arch super long-span subway station through groove broaching and support substitution |
| CN108343456A (en) * | 2018-01-26 | 2018-07-31 | 中铁四局集团有限公司 | Underground excavation subway station internal explosion construction method |
| CN108979663A (en) * | 2018-05-25 | 2018-12-11 | 中国建筑股份有限公司 | A kind of main structure of subway station construction method using interim middle spacer post support |
| CN110823031A (en) * | 2019-11-06 | 2020-02-21 | 国网辽宁省电力有限公司大连供电公司 | Blasting construction method for shallow tunnel |
| CN110924985A (en) * | 2019-12-04 | 2020-03-27 | 中铁二院贵阳勘察设计研究院有限责任公司 | Long rock pillar construction method suitable for overlying thin rock stratum |
| CN111577317A (en) * | 2020-04-30 | 2020-08-25 | 中铁隧道局集团有限公司 | Construction method for large-span underground excavation subway station cavern in upper-soft and lower-hard stratum |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101196116A (en) * | 2007-12-28 | 2008-06-11 | 中铁十二局集团有限公司 | Three-connected-arch tunnel double-side cavity construction method for soft geological |
| CN101666232A (en) * | 2009-09-27 | 2010-03-10 | 中铁四局集团有限公司 | Construction method for six-part excavation of super-large section tunnel |
| CN101725358A (en) * | 2008-10-31 | 2010-06-09 | 中铁四局集团有限公司 | Tunnel ultra-shallow buried uneven weathered stratum excavation construction method |
| CN101769154A (en) * | 2008-12-31 | 2010-07-07 | 中铁六局集团呼和浩特铁路建设有限公司 | Excavation supporting method for tunnel construction |
| CN102071947A (en) * | 2011-01-21 | 2011-05-25 | 中交四航局第一工程有限公司 | Construction method for soft surrounding rock section of large-span tunnel portal |
| JP4771170B2 (en) * | 2006-12-25 | 2011-09-14 | 清水建設株式会社 | Construction method of underground cavity |
-
2011
- 2011-12-23 CN CN2011104379742A patent/CN102562076A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4771170B2 (en) * | 2006-12-25 | 2011-09-14 | 清水建設株式会社 | Construction method of underground cavity |
| CN101196116A (en) * | 2007-12-28 | 2008-06-11 | 中铁十二局集团有限公司 | Three-connected-arch tunnel double-side cavity construction method for soft geological |
| CN101725358A (en) * | 2008-10-31 | 2010-06-09 | 中铁四局集团有限公司 | Tunnel ultra-shallow buried uneven weathered stratum excavation construction method |
| CN101769154A (en) * | 2008-12-31 | 2010-07-07 | 中铁六局集团呼和浩特铁路建设有限公司 | Excavation supporting method for tunnel construction |
| CN101666232A (en) * | 2009-09-27 | 2010-03-10 | 中铁四局集团有限公司 | Construction method for six-part excavation of super-large section tunnel |
| CN102071947A (en) * | 2011-01-21 | 2011-05-25 | 中交四航局第一工程有限公司 | Construction method for soft surrounding rock section of large-span tunnel portal |
Non-Patent Citations (2)
| Title |
|---|
| 刁志刚等: "《大断面隧道在上软下硬地层中施工方法研究》", 《隧道建设》, 31 August 2007 (2007-08-31), pages 433 - 436 * |
| 刘松涛等: "《上软下硬地层铁路隧道下穿既有高速公路施工方法研究》", 《铁道科学与工程学报》, vol. 8, no. 5, 31 October 2011 (2011-10-31), pages 35 - 39 * |
Cited By (23)
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| CN102758642B (en) * | 2012-07-16 | 2014-04-30 | 中铁隧道集团有限公司 | Long-span tunnel overlapping carrying arch structure for upper-soft and lower-hard stratum and construction method thereof |
| CN102758642A (en) * | 2012-07-16 | 2012-10-31 | 中铁隧道集团有限公司 | Long-span tunnel overlapping carrying arch structure for upper-soft and lower-hard stratum and construction method thereof |
| CN102758632A (en) * | 2012-07-19 | 2012-10-31 | 中铁隧道集团有限公司 | Rock stratum double initial support layering method for establishing large-scale underground structure |
| CN102758632B (en) * | 2012-07-19 | 2014-10-29 | 中铁隧道集团有限公司 | Rock stratum double initial support layering method for establishing large-scale underground structure |
| CN104047623B (en) * | 2014-06-06 | 2016-07-13 | 同济大学 | A kind of big across cavern excavation construction method |
| CN104047623A (en) * | 2014-06-06 | 2014-09-17 | 同济大学 | Large-span grotto excavation construction method |
| CN104847362A (en) * | 2015-01-29 | 2015-08-19 | 中铁二院工程集团有限责任公司 | Large-span subway station underground excavation construction method for hard rock stratum |
| CN104847362B (en) * | 2015-01-29 | 2017-12-01 | 中铁二院工程集团有限责任公司 | Ground consisting of hard rock construction method across underground digging in subway station greatly |
| CN104763435A (en) * | 2015-03-02 | 2015-07-08 | 中国建筑第八工程局有限公司 | Construction method of shallow-buried excavation type large cross section of tunnel in tail slag filling area |
| CN104763435B (en) * | 2015-03-02 | 2017-02-22 | 中国建筑第八工程局有限公司 | Construction method of shallow-buried excavation type large cross section of tunnel in tail slag filling area |
| CN105065032B (en) * | 2015-07-29 | 2017-10-17 | 上海市隧道工程轨道交通设计研究院 | Suitable for the large cross-section tunnel support system construction method of steep dip stratified rock masses |
| CN105065032A (en) * | 2015-07-29 | 2015-11-18 | 上海市隧道工程轨道交通设计研究院 | Large cross-section tunnel supporting system construction method applicable to steep dip layered rock mass |
| CN106567718A (en) * | 2015-10-10 | 2017-04-19 | 中铁隧道勘测设计院有限公司 | Construction method for composite stratum single-arch super long-span subway station through groove broaching and support substitution |
| CN106368711A (en) * | 2016-10-12 | 2017-02-01 | 中建局集团第六建筑有限公司 | Ultra-shallow buried rectangular large-section four-step underground excavation construction method |
| CN106499417A (en) * | 2016-10-25 | 2017-03-15 | 中铁隧道集团二处有限公司 | The reserved T word rock beam rock pillar constructions of extra-large cross-section resistant Capacity of Shallow-buried Subway Station |
| CN106499417B (en) * | 2016-10-25 | 2019-01-08 | 中铁隧道集团二处有限公司 | Extra-large cross-section resistant Capacity of Shallow-buried Subway Station reserves T word rock beam rock pillar construction |
| CN106401591A (en) * | 2016-12-07 | 2017-02-15 | 中铁四局集团有限公司 | Construction method for small-angle downward-penetrating high-speed grid tunnel |
| CN106401591B (en) * | 2016-12-07 | 2018-07-06 | 中铁四局集团有限公司 | Construction method for small-angle downward-penetrating high-speed grid tunnel |
| CN108343456A (en) * | 2018-01-26 | 2018-07-31 | 中铁四局集团有限公司 | Underground excavation subway station internal explosion construction method |
| CN108979663A (en) * | 2018-05-25 | 2018-12-11 | 中国建筑股份有限公司 | A kind of main structure of subway station construction method using interim middle spacer post support |
| CN110823031A (en) * | 2019-11-06 | 2020-02-21 | 国网辽宁省电力有限公司大连供电公司 | Blasting construction method for shallow tunnel |
| CN110924985A (en) * | 2019-12-04 | 2020-03-27 | 中铁二院贵阳勘察设计研究院有限责任公司 | Long rock pillar construction method suitable for overlying thin rock stratum |
| CN111577317A (en) * | 2020-04-30 | 2020-08-25 | 中铁隧道局集团有限公司 | Construction method for large-span underground excavation subway station cavern in upper-soft and lower-hard stratum |
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Application publication date: 20120711 |