Construction method for reinforcing and protecting prior comprehensive pipe gallery
A technology of comprehensive pipe gallery and construction method, applied in protection devices, artificial islands, water conservancy projects, etc., can solve problems such as unsuitable reinforcement of soft rocks, and achieve the effect of avoiding fractures
Inactive Publication Date: 2018-11-23
2ND ENG CO LTD OF CHINA RAILWAY 12TH BUREAU GRP +1
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Problems solved by technology
[0004] At present, there are two types of reinforcement methods for the existing comprehensive pipe gallery. One is to set up temporary columns under the existing comprehensive pipe gallery, and the other is to erect Bailey beams above the existing comprehensive pipe gallery to hold the suspended pipe gallery. Neither of these two reinforcement methods is suitable for strengthening the existing comprehensive pipe gallery in soft rock
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[0033] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, not to limit the present invention.
[0034] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0035] In the present invention, unless stated to the contrary, the used orientation words such as "up, down, top, bottom" generally refer to the directions shown in the drawings or refer to the vertical, perpendicular or gravitational directions The terms used to describe the mutual positional relationship of the various components mentioned above.
[0036] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0037] figure 1 It is a flow chart ...
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The invention provides a construction method for reinforcing and protecting a prior comprehensive pipe gallery, which is applied to a vertical lower penetrating prior comprehensive pipe gallery of a hidden digging section tunnel, the construction method comprises the following steps: (01) vertical chemical churning piles are constructed between a first ground connecting wall, second ground connecting wall and the two side walls of a prior comprehensive pipe gallery to form a first reinforcing wall body and a second reinforcing wall body between the first ground connecting wall, second ground connecting wall and the two side walls of the prior comprehensive pipe gallery through the occlusion of the chemical churning piles; S02) a pipe shed grouting method is used to reinforce the soil bodyat the bottom of the prior comprehensive pipe gallery; (3) a pipe shed grouting method is used to reinforce the soil body at the periphery of the outline profile of the hidden digging section tunnel;S04) horizontal chemical churning piles are constructed between the prior comprehensive pipe gallery and the hidden digging section tunnel so as to reinforce the soil body between the prior comprehensive pipe gallery and the hidden digging section tunnel. The construction method does not damage the prior comprehensive pipe gallery due to the construction of the hidden digging section tunnel, and the problems of breakage, subsidence, and water seepage of the prior comprehensive pipe gallery and inner pipeline are avoided.
Description
technical field [0001] The invention relates to the field of tunnel construction, in particular to a construction method for reinforcing and protecting an existing comprehensive pipe gallery when a submerged tunnel in soft rock passes through the existing comprehensive pipe gallery. Background technique [0002] The integrated pipe gallery is a modern, scientific and intensive urban infrastructure formed by concentrating two or more pipelines such as electricity, communication, water supply, heating, and gas in the same underground space below the road. [0003] With the acceleration of urban construction in our country, the urban population has risen sharply. In order to solve the traffic congestion of the urban population and alleviate traffic congestion, the country is also vigorously developing underground railway transportation. More and more, especially the construction of newly-built underground excavation tunnels will inevitably disturb the strata around the existing...
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IPC IPC(8): E02D29/045E02D31/00
CPCE02D29/045E02D31/00
Inventor 李钢阴镐辉刘杰李学荣吉艳雷乔国华廖威
Owner 2ND ENG CO LTD OF CHINA RAILWAY 12TH BUREAU GRP