CN106499417B - Extra-large cross-section resistant Capacity of Shallow-buried Subway Station reserves T word rock beam rock pillar construction - Google Patents
Extra-large cross-section resistant Capacity of Shallow-buried Subway Station reserves T word rock beam rock pillar construction Download PDFInfo
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- CN106499417B CN106499417B CN201610937859.4A CN201610937859A CN106499417B CN 106499417 B CN106499417 B CN 106499417B CN 201610937859 A CN201610937859 A CN 201610937859A CN 106499417 B CN106499417 B CN 106499417B
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- 239000011435 rock Substances 0.000 title claims abstract description 83
- 238000010276 construction Methods 0.000 title claims abstract description 46
- 238000009412 basement excavation Methods 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 239000004575 stone Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 7
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- 230000002787 reinforcement Effects 0.000 claims 1
- 239000002002 slurry Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 16
- 238000011161 development Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000012407 engineering method Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- -1 arch flat structure Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D13/00—Large underground chambers; Methods or apparatus for making them
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a kind of extra-large cross-section resistant Capacity of Shallow-buried Subway Station to reserve T word rock beam rock pillar construction, belong to technical field of tunnel construction, comprising steps of 1) left side of excavation project and right side rock mass, section is set to form reserved T word rock beam rock pillar, the double-hole tunnel side wall of formation is using anchor cable filling slurry combining anchor supporting；2) the side wall construction waterproof of the combined supporting in step 1), I-steel and two lining structures are further reinforced, and backfill earth and stone material to fill up, be compacted at excavation, surface construction C20 plain concrete；3) two side areas of T shape rock beam rock pillar is excavated；4) section gap excavates the top area of T shape rock beam rock pillar；5) central region of T shape rock beam rock pillar is excavated, and clears out backfill earth and stone material.The present invention adapts to extra-large cross-section resistant Capacity of Shallow-buried Subway Station or constructing tunnel by the scheme of reserved T shape rock beam rock pillar, can effectively control surrouding rock stress, tunnel arch settling amount and two helps deflection, protection above ground structure, guarantee construction safety.
Description
Technical field
The invention belongs to technical field of tunnel construction, and in particular to it is a kind of for the shallow embedding engineering with extra-large cross-section (such as
Subway station, underground chamber, vcehicular tunnel etc.) take the construction of reserved T word rock beam rock pillar.
Background technique
With being increasing for urban population, the continuous expansion of city size, the congested problem day of urban transportation is more protruded.
In order to solve this problem, countries in the world propose in succession and have developed subway transportation.London is to possess ground earliest in the world
The city of iron, then, Paris, FRA, Moscow, Russia, Madrid, ESP, Tokyo etc. have started subway engineering in succession
Construction and use.Beijing is that China's early start is built and possesses the city of subway.It is Tianjin, Shanghai, wide after Beijing
The cities such as state, Shenzhen, Nanjing, Chongqing more early start to build urban light rail and subway.Chengdu, Xi'an, Shenyang, Zhengzhou, Hangzhou, elder brother
Multiple cities such as bright start to build subway engineering in recent years, it will be apparent that, city underground there has been very large-scale development in China
With use, and its speed of development is higher and higher.
Because China is with a long history, the scenic spots and historical sites are more, and the environment faced in urban light rail and subway construction is more complex, many
Ancient building, highway, river, residential area, oil-gas pipeline etc. are worn under track circuit, and track and subway station section are big,
According to International Tunnelling Association (ITA) to tunnel cross-section product size definition, it is greater than 100m2Referred to as Super-large-section tunnel, with China
The fast development of transport development cause has emerged in large numbers many Super-large-section tunnels, such as No. two line northern station sections of Shenyang Metro are
340m2, Chongqing Light Railway great Ping station section is 430m2, near a river gate bus terminal section be 420.9m2, red flag stream station section be
730m2.Compared with the tunnel built in the past, the construction of Super-large-section tunnel, in the section shape of the mechanical behavior in tunnel, tunnel
There is new, higher requirement in formula, tunnel lining structure, preliminary bracing tactic pattern, supporting parameter etc., these will
It asks to make construction method and be correspondingly improved, to improve the safety and reliability of engineering.
Mainly there are three steps, seven step excavating load, interval wall approach (CD method), friendship in Construction Method of Super-Large Section Tunnel both at home and abroad
Interval wall approach (CRD method), twin side heading method, three pilot tunnel methods etc. are pitched, is provided to improve not by means of the construction method of auxiliary above
Especially big section chemical conversion light section construction is made the formation closing or semiclosed carrying knot that outline excavation is as fast as possible by the good soil body
Then structure excavates core Rock And Soil again.In recent years, some scientific research institutions, designing unit and construction unit adopt extra-large cross-section tunnel
Road construction mentality of designing, optimization of constantly bringing forth new ideas on the basis of conventional Super-large-section tunnel construction, proposes
New constructing tunnel engineering method, for example, No. seven line twin-well stations of Beijing Metro be shallow mining method, using two layers of underground twin columns three across
Form, station principal length 237.6m, standard paragraphs width 23.1m, height 16.15m, cross-sectional area 320m2, country rock is IV class sand
Soil and clay are constructed using PBA engineering method.No. two stations Xian great Ping of Chongqing Light Railway use shallow mining method, main body excavation width
26.3m, height 20.6m, cross-sectional area 430m2, the minimum depth 4m, country rock be III class mud stone, arch flat structure, hole across than for
0.15-0.5, for the first time using " upper half section side heading method, lower half section elder generation bracket groove back side wall are excavated, arch-wall method lining cutting "
Constructing tunnel novel construction method.No. two line northern station tunneling sections of Shenyang Metro are that bilayer three encircles two rod structures, and an island platform, platform slab is wide
13.9m, buried depth 6.4m, excavation width 26.3m, height 16.95m, cross-sectional area 340m2, constructed using cavern-pile method.Chongqing Light Railway
No. three line red flag streams station Type B section, excavation width 23.753m, height 32.316m, cross-sectional area 730m2, most for Asia
The Urban Underground Station of big cross section, using the constructing tunnel new method of reserved cross rock beam rock pillar.
Summary of the invention
In view of this, it is an object of the invention to propose that a kind of extra-large cross-section resistant Capacity of Shallow-buried Subway Station reserves T word rock beam rock pillar
Construction takes reserved T word rock beam rock pillar, and structural-load-carrying capacity is strong, can effectively control surrouding rock stress, the sedimentation of tunnel arch
Amount and two helps deflection, protects above ground structure, ensures construction safety.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of reserved T word rock beam rock pillar construction of extra-large cross-section resistant Capacity of Shallow-buried Subway Station, comprising the following steps:
1) left side of excavation project section and right side rock mass make engineering section form reserved T shape rock beam rock pillar, excavate and are formed
Double-hole tunnel side wall using anchor cable add grouted anchor bar carry out combined supporting；
2) the side wall construction waterproof of the combined supporting in step 1), I-steel and two lining structures are further reinforced, and returned
The building stones that banket will be filled up at excavation, are compacted, in compacting surface construction C20 plain concrete；
3) the T shape two side areas of T shape rock beam rock pillar is excavated, the two sides side wall at excavation takes grouted anchor bar supporting to add
Gu；
4) section gap excavates the T shape top area of T shape rock beam rock pillar, and the vault in subway station takes grouted anchor bar branch
Shield is reinforced, and is further reinforced to T shape two sidewalls and vault construction waterproof, I-steel and two lining structures；
5) the T shape central region of T shape rock beam rock pillar is excavated, and clears out backfill earth and stone material；
6) waterproof of construction work bottom, I-steel and two lining structures.
Further, it in step 2), backfills earth and stone material and takes Spaced to construct with C20 plain concrete.
The beneficial effects of the present invention are:
The present invention proposes the scheme of reserved T shape rock beam rock pillar, T shape knot for extra-large cross-section resistant Capacity of Shallow-buried Subway Station engineering
Structure bearing capacity is strong, can effectively control engineering surrounding rock stress, arch settling amount and two helps deflection, keeps work progress safer
With it is reliable, meanwhile, take backfill earth and stone material and section gap mode can increase the stability of engineering structure, deformation controlling for rock surrounding gateways
Amount, further ensures that the safety of construction and the reliability of quality.
Other advantages, target and feature of the invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.Target of the invention and other advantages can be realized by following specification and
It obtains.
Detailed description of the invention
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
The detailed description of one step, in which:
Fig. 1 is the working procedure figure of invention；
Fig. 2 is section gap working procedure figure.
Specific embodiment
Hereinafter reference will be made to the drawings, and a preferred embodiment of the present invention will be described in detail.It should be appreciated that preferred embodiment
Only for illustrating the present invention, rather than limiting the scope of protection of the present invention.
Fig. 1 is working procedure figure of the invention, and Fig. 2 is section gap working procedure figure, is made by taking metro station as an example detailed
It describes in detail bright:
Metro station is 15 meters of an island platform Stations of F3/B3, using drill bursting construction, composite lining.Ground
Next layer be station hall layer, two floor of underground be No. four line station layers, F3/B3 be No. nine line station layers, station overall length 237m,
Main body excavation width 26.4m, height 28.21m, cross-sectional area 667m2, belong to Super-large-section tunnel.Tunnel surrounding is chiltern mud
Rock and sandstone, medium weathering, fender graded are mainly IV grade, and Local topography is V grade.Station buried depth is shallower, and upper overlying strata soil layer is thick
Spend about 20m~32.4m, wherein on cover plain fill thickness about 1.2~17.0m, tunnel top medium weathering basement rock thickness is about 9.2~
26.7m。
Before construction, piecemeal is carried out with width about 6-10m, high about 3-6m to the section at the station, after division comprising 1-13
Block, as shown in Figure 1, its working procedure is as follows:
1) the 1st, 2,3,4 piece of rock mass of tunneling arranged on left and right sides, tunnel cross section form reserved T word rock beam rock pillar, tunnel
Wall carries out combined supporting using grouted anchor bar I, anchor cable II；
2) rock mass has been excavated to the 1st, 2,3,4 piece of left and right side and has carried out four backfills, specifically included:
1. construct the 1st, 2,3,4 piece of rock mass waterproof, III II of I-steel and two lining structures IV, inverted arch backfill soil-rock mixture,
And be compacted, backfill height is the 4th piece of rock mass absolute altitude, backfill level construction C20 plain concrete；
2. the 3rd piece of soil-rock mixture of backfill, and be compacted, backfill height is the 3rd piece of rock mass absolute altitude, backfill level construction C20
Plain concrete；
3. the 2nd piece of soil-rock mixture of backfill, and be compacted, backfill height is the 2nd piece of rock mass absolute altitude, backfill level construction C20
Plain concrete；
4. the 1st piece of soil-rock mixture of backfill, and be compacted, backfill height is the 1st piece of rock mass absolute altitude, backfill level construction C20
Plain concrete；
3) the 5th, 6 piece of rock mass is excavated, gib is made, tunnel arch uses grouted anchor bar I supporting；
4) excavate the 7th piece of rock mass, step 7 using section gap construction, make preliminary bracing, apply 5,6,7 pieces of rock mass waterproofs,
I-steel III and two lining structure IV；
5) the 8th, 9 piece of rock mass is excavated；
6) the 10th, 11,12,13 piece of rock mass is excavated, and clears out backfill body；
7) construction tunnel bottom waterproof, I-steel III and two lining structure IV.
When constructing to the 7th piece of rock mass, the 7th piece of rock mass can be divided into multiple regions by top view, as shown in Fig. 2, being divided into
A, tri- pieces of b, c, section gap construct when, can first to serial number a construct, after to serial number b construct, finally again to serial number c construct, and
Before subsequent region construction, construction area is subjected to I-steel III and two lining structure IV and is reinforced, the support energy of structure is improved
The safety of power and construction.
The present invention proposes the construction of reserved T shape rock beam rock pillar, T for extra-large cross-section resistant Capacity of Shallow-buried Subway Station engineering
Shape structure bearing capacity is strong, can effectively control engineering surrounding rock stress, arch settling amount and two helps deflection, makes work progress more
It is safe and reliable, meanwhile, take backfill earth and stone material and section gap mode that can increase the stability of engineering structure, control country rock change
Shape amount further ensures that the safety of construction and the reliability of quality.
Generally speaking, the present invention adapts to extra-large cross-section resistant Capacity of Shallow-buried Subway Station or constructing tunnel, can effectively control country rock and answer
Power, tunnel arch settling amount and two help deflection, protect above ground structure, ensure construction safety.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of the technical program, should all be covered in the present invention
Scope of the claims in.
Claims (1)
1. a kind of extra-large cross-section resistant Capacity of Shallow-buried Subway Station reserves T word rock beam rock pillar construction, it is characterised in that: including following step
It is rapid:
1) left side of excavation project section and right side rock mass make engineering section form reserved T shape rock beam rock pillar, excavate the double of formation
Hole tunnel side wall adds grouted anchor bar to carry out combined supporting using anchor cable；
2) the side wall construction waterproof of the combined supporting in step 1), I-steel and two lining structures are further reinforced, and backfill
Building stones will be filled up at excavation, are compacted, and take the mode of Spaced to construct C20 plain concrete in compacting surface；
3) the T shape two side areas of T shape rock beam rock pillar is excavated, the two sides side wall at excavation takes grouted anchor bar support reinforcement；
4) section gap excavates the T shape top area of T shape rock beam rock pillar, and the vault in subway station takes grouted anchor bar supporting to add
Gu further being reinforced to T shape two sidewalls and vault construction waterproof, I-steel and two lining structures；
5) the T shape central region of T shape rock beam rock pillar is excavated, and clears out backfill earth and stone material；
6) waterproof of construction work bottom, I-steel and two lining structures.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610937859.4A CN106499417B (en) | 2016-10-25 | 2016-10-25 | Extra-large cross-section resistant Capacity of Shallow-buried Subway Station reserves T word rock beam rock pillar construction |
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| CN201610937859.4A CN106499417B (en) | 2016-10-25 | 2016-10-25 | Extra-large cross-section resistant Capacity of Shallow-buried Subway Station reserves T word rock beam rock pillar construction |
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| CN106499417A CN106499417A (en) | 2017-03-15 |
| CN106499417B true CN106499417B (en) | 2019-01-08 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461201B (en) * | 2017-09-30 | 2019-06-25 | 中铁二局集团有限公司 | The construction method of the damping protection system of hard rock subway station in a kind of middle hole method Blasting Excavation |
| CN108170988B (en) * | 2018-01-23 | 2021-01-01 | 成都希盟泰克科技发展有限公司 | Three-step seven-step method for tunnel excavation based on BIM technology |
| 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 |
| CN110939472A (en) * | 2019-12-24 | 2020-03-31 | 中矿金业股份有限公司 | Construction method of large-section ultrahigh chamber |
| CN116480392B (en) * | 2023-06-21 | 2023-09-29 | 矿冶科技集团有限公司 | Rock column reinforcing method |
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2016
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|---|---|---|---|---|
| JP2006322222A (en) * | 2005-05-19 | 2006-11-30 | Metropolitan Expressway Public Corp | Construction method of large-sectional tunnel |
| CN101566064A (en) * | 2009-06-01 | 2009-10-28 | 中国建筑第八工程局有限公司 | Large-section tunnel construction method |
| CN101858220A (en) * | 2010-05-28 | 2010-10-13 | 深圳市建设（集团）有限公司 | Tunnel double upper sidewall heading construction method |
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Effective date of registration: 20171030 Address after: 050000 south side of Xueyuan Road street, Yanjiao Development Zone, Shijiazhuang, Hebei, Sanhe Applicant after: Erchu Co., Ltd. of China Railway Tunnel Group Applicant after: Woods is with Im international construction consulting (China) Co., Ltd Applicant after: Chongqing Zhongche Construction Engineering Co. Ltd. Address before: South side of Xueyuan Road street, Yanjiao Development Zone, Shijiazhuang, Hebei, China Applicant before: Erchu Co., Ltd. of China Railway Tunnel Group Applicant before: Woods is with Im international construction consulting (China) Co., Ltd Applicant before: Chongqing University |
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