CN203499695U - Reinforcing structure for shallow-buried tunnel in bustling urban area - Google Patents

Reinforcing structure for shallow-buried tunnel in bustling urban area Download PDF

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Publication number
CN203499695U
CN203499695U CN201320592472.1U CN201320592472U CN203499695U CN 203499695 U CN203499695 U CN 203499695U CN 201320592472 U CN201320592472 U CN 201320592472U CN 203499695 U CN203499695 U CN 203499695U
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China
Prior art keywords
base tunnel
heading
tunnel
reinforcing structure
base
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Expired - Fee Related
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CN201320592472.1U
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Chinese (zh)
Inventor
王俊生
于天生
李建成
孟涛
赖顺江
夏建勋
邵文
刘荣华
张亚涛
王振华
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China Railway No 3 Engineering Group Co Ltd
China Railway No 3 Engineering Group Co Ltd Guangzhou Branch
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China Railway No 3 Engineering Group Co Ltd
China Railway No 3 Engineering Group Co Ltd Guangzhou Branch
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Priority to CN201320592472.1U priority Critical patent/CN203499695U/en
Application granted granted Critical
Publication of CN203499695U publication Critical patent/CN203499695U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a reinforcing structure for a shallow-buried tunnel in a bustling urban area, and the problems that in the prior art, when the shallow-buried tunnel is constructed in the bustling urban area, traffic is obstructed, the tunnel is liable to collapse and is time-consuming and labor-consuming, and construction efficiency is influenced are solved. A left heading, a right heading, a left heading I, a right heading I, and a heading II are successively disposed from inside to outside in a stepped manner, the periphery over the heading and the heading I is provided with an arc-shaped advanced slip-casting conduit composed of a plurality of conduit units, the periphery of the heading, the heading I and the heading II is provided with a primary bracing layer positioned at the inner side of the advanced slip-casting conduit, and the inner side of the primary bracing layer is provided with a second lining inverted arch; and a vertical partition wall is disposed between the left heading and the right heading, the bottom of the heading is provided with a steel mash, and the middle of the left heading, the middle of the right heading, adjacent sides of the left heading I and the right heading I are all provided with core soils. The reinforcing structure is reasonable and reliable in structural design, vault crown settlement is effectively controlled, relatively high economic benefit and social benefit are brought, and the reinforcing structure is advantaged by simple structure and convenient operation.

Description

Busy city proper shallow buried covered excavation tunnel reinforcement structure
Technical field
The utility model relates to tunnel reinforcement structure, is specially a kind of busy city proper shallow buried covered excavation tunnel reinforcement structure.
Background technology
Along with the quickening of urbanization process, city track traffic engineering will be brought into play very important effect in realizing civilized traffic sustainable development strategy.In the construction of busy city proper, there is the factors such as stratum features as poor geologic condition, rich groundwater, ground surface environment complexity, tunnel excavation very easily causes the displacement around of earth's surface and chamber excessive, the generation such as cause that Tunnel Landslide, road surface local failure are even subsided, the inclination of existing structure thing foundation failure, building is collapsed.
In current shallow embedding location, city weak surrounding rock shallow buried covered excavation constructing tunnel, exist following problem: it is longer that 1, the road occupying time is encircled and hunted down in construction, in city, bustling location easily forms current bottleneck, blocks the traffic; 2, it is longer that Tunnel during Construction just props up off-period, and chamber around distortion is larger, and the sedimentation of ground and periphery existing building is often wayward, easily cause land subsidence or subside, existing building tilts; 3, construction operation space of planes is less, and big machinery is difficult to coordinate hand excavation, is difficult to form continuous productive process.
Summary of the invention
The utility model exists when solving existing busy city proper shallow buried covered excavation constructing tunnel and blocks the traffic, easily subsiding and wasting time and energy affects the problem of efficiency of construction, and a kind of busy city proper shallow buried covered excavation tunnel reinforcement structure is provided.
The utility model is to adopt following technical scheme to realize: busy city proper shallow buried covered excavation tunnel reinforcement structure, tunnel tunnel face arranges base tunnel from top to bottom, base tunnel I, base tunnel II, base tunnel comprises left base tunnel and right base tunnel, base tunnel I comprises left base tunnel I and right base tunnel I, left base tunnel, right base tunnel, left base tunnel I, right base tunnel I and base tunnel II ladder setting successively from inside to outside, base tunnel and base tunnel I upper periphery are provided with the arcuation leading injected condulet being comprised of some conduits, and base tunnel, the periphery of base tunnel I and base tunnel II is provided with the preliminary bracing layer that is positioned at leading injected condulet inner side, preliminary bracing layer inner side is provided with two lining inverted arch, between left base tunnel and right base tunnel, be provided with vertical next door, base tunnel bottom is provided with steel mesh reinforcement, left base tunnel, the middle part of right base tunnel and left base tunnel I, an adjacent side of right base tunnel I is provided with Core Soil.
During operation, face is divided into five excavation base tunnels, the construction of base tunnel, mechanical equivalent of light excavation remaining core soil in advance, after manual amendment excavation profile, shaped steel arch is installed, the integral body that realizes base tunnel by steel mesh reinforcement, vertical next door and preliminary bracing layer is stressed, base tunnel I, base tunnel II have realized whole stressed equally, each base tunnel is constructed after alternately falling behind last 2-3m in order, effectively control the vault sedimentation of weak surrounding rock, while having overcome existing busy city proper shallow buried covered excavation constructing tunnel, exist block the traffic, easily subsiding and wasting time and energy affects the problem of efficiency of construction.
The utility model reasonable in design is reliable, and efficiency of construction improves, and just props up and shortens off-period, and effective accelerating construction progress, avoids arch springing for a long time on Muddy Bottoms clay layer, thereby effectively controlled vault sedimentation; And just prop up and seal into after ring, can synchronously apply two lining inverted arch, guarantee tunnel integral construction safety; Brought higher economic benefit and social benefit simultaneously, had advantages of simple in structure, easy to operate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-base tunnel II, the left base tunnel of 2-, the right base tunnel of 3-, the left base tunnel I of 4-, the right base tunnel I of 5-, 6-leading injected condulet, 7-preliminary bracing layer, 8-bis-lining inverted arch, the vertical next door of 9-, 10-steel mesh reinforcement, 11-Core Soil.
The specific embodiment
Busy city proper shallow buried covered excavation tunnel reinforcement structure, tunnel tunnel face arranges base tunnel from top to bottom, base tunnel I, base tunnel II1, base tunnel comprises left base tunnel 2 and right base tunnel 3, base tunnel I comprises left base tunnel I4 and right base tunnel I5, left base tunnel 2, right base tunnel 3, left base tunnel I4, right base tunnel I5 and base tunnel II1 ladder setting successively from inside to outside, base tunnel and base tunnel I upper periphery are provided with the arcuation leading injected condulet 6 being comprised of some conduits, and base tunnel, the periphery of base tunnel I and base tunnel II1 is provided with the preliminary bracing layer 7 that is positioned at leading injected condulet 6 inner sides, preliminary bracing layer 7 inner side are provided with two lining inverted arch 8, between left base tunnel 2 and right base tunnel 3, be provided with vertical next door 9, base tunnel bottom is provided with steel mesh reinforcement 10, left base tunnel 2, the middle part of right base tunnel 3 and left base tunnel I4, an adjacent side of right base tunnel I5 is provided with Core Soil 11.
In specific implementation process, first utilize the vertical steelframe of a upper circulation frame to apply arch, tunnel 180 wide-ultra dummy pipes, with ZSY-70 type pipe canopy machine and BW-150 type grouting pump, carry out pre-grouting supporting; With the little digging machine of PC20 type, excavate left base tunnel 2 remaining core soil in advance 11 subsequently, artificial deburring, the preliminary bracing layer 7 and the vertical next door 9 that with TK-961 type wet-spraying machine, apply left base tunnel 2 peripheries, the little digging machine of PC20 type excavates left base tunnel 2 Core Soils 11, just sprays the thick concrete of 4cm, lay steel mesh reinforcement 10, interim inverted arch is installed, longitudinal dowel is installed, spray concrete, right base tunnel 3 applies and lags behind left base tunnel 2 Core Soil 2-3m, and step applies with left base tunnel 2; Following left base tunnel I4 applies and lags behind right base tunnel 3 Core Soil 2-3m, with the large pick machine of PC60, excavate left base tunnel I, with TK-961 type wet-spraying machine, apply the preliminary bracing layer 7 at left base tunnel I4 place, right base tunnel I5 applies and lags behind left base tunnel I4 Core Soil 2~3m, and step applies with left base tunnel I4; Last base tunnel II applies and lags behind right base tunnel I Core Soil 2~3m, step applies with right base tunnel I5, after just sealing into ring certain length, start to apply two lining inverted arch 8, after completing, monitored data is carried out to labor, pending data is stablized dismountable vertical next door 9, rear and steel mesh reinforcement 10, remove length for every section and be no more than 12m, and apply in time two lining arch wall parts.
Due to base tunnel, I is too high, manually bow member cannot be installed, cycle operation overlong time is prone to potential safety hazard, therefore be that up/down steps is constructed by base tunnel I, the up/down steps 2-3m that staggers, step applies with right base tunnel, as better in country rock globality, during without infiltration, base tunnel I tops bar and can excavate simultaneously, and remaining core soil in advance 11.

Claims (1)

1. a busy city proper shallow buried covered excavation tunnel reinforcement structure, it is characterized in that: tunnel tunnel face arranges base tunnel from top to bottom, base tunnel I, base tunnel II(1), base tunnel comprises left base tunnel (2) and right base tunnel (3), base tunnel I comprises left base tunnel I(4) and right base tunnel I(5), left base tunnel (2), right base tunnel (3), left base tunnel I(4), right base tunnel I(5) and base tunnel II(1) ladder setting successively from inside to outside, base tunnel and base tunnel I upper periphery are provided with the arcuation leading injected condulet (6) being comprised of some conduits, and base tunnel, base tunnel I and base tunnel II(1) periphery be provided with the preliminary bracing layer (7) that is positioned at leading injected condulet (6) inner side, preliminary bracing layer (7) inner side is provided with two lining inverted arch (8), between left base tunnel (2) and right base tunnel (3), be provided with vertical next door (9), base tunnel bottom is provided with steel mesh reinforcement (10), left base tunnel (2), the middle part of right base tunnel (3) and left base tunnel I(4), right base tunnel I(5) an adjacent side is provided with Core Soil (11).
CN201320592472.1U 2013-09-25 2013-09-25 Reinforcing structure for shallow-buried tunnel in bustling urban area Expired - Fee Related CN203499695U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320592472.1U CN203499695U (en) 2013-09-25 2013-09-25 Reinforcing structure for shallow-buried tunnel in bustling urban area

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Application Number Priority Date Filing Date Title
CN201320592472.1U CN203499695U (en) 2013-09-25 2013-09-25 Reinforcing structure for shallow-buried tunnel in bustling urban area

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105443132A (en) * 2015-12-02 2016-03-30 中国建筑第五工程局有限公司 Construction method of shallow-buried subsurface-excavated cross-shaped cross-strut tunnel
CN105606168A (en) * 2016-03-24 2016-05-25 东北林业大学 Flow monitoring device for water drainage pipe in center of tunnel
CN106761772A (en) * 2016-11-26 2017-05-31 高韶晗 Shallow buried and underground excavated engineering project construction fixing device and its fixing means
CN107130968A (en) * 2017-07-11 2017-09-05 北京市政建设集团有限责任公司 A kind of tunnel construction mid-board

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105443132A (en) * 2015-12-02 2016-03-30 中国建筑第五工程局有限公司 Construction method of shallow-buried subsurface-excavated cross-shaped cross-strut tunnel
CN105606168A (en) * 2016-03-24 2016-05-25 东北林业大学 Flow monitoring device for water drainage pipe in center of tunnel
CN106761772A (en) * 2016-11-26 2017-05-31 高韶晗 Shallow buried and underground excavated engineering project construction fixing device and its fixing means
CN107130968A (en) * 2017-07-11 2017-09-05 北京市政建设集团有限责任公司 A kind of tunnel construction mid-board

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Granted publication date: 20140326

Termination date: 20180925