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Deformation control construction method based on short-distance underpass existing line and supporting structure

A deformation control and construction method technology, which is applied in earthwork drilling, underground chambers, shaft equipment, etc., can solve the problems of easy deformation of existing lines and inability to strengthen strata, and achieves a good support effect, stable structure and strong support force. Effect

Pending Publication Date: 2022-05-06
北京住总集团有限责任公司 +1
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  • Claims
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Problems solved by technology

Both the engineering geology and hydrogeology related to the environment of the tunnel are disturbed, the stratum between the two structures is thin, and technical measures cannot effectively reinforce the stratum, so the existing line is easily deformed during the construction process

Method used

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  • Deformation control construction method based on short-distance underpass existing line and supporting structure
  • Deformation control construction method based on short-distance underpass existing line and supporting structure
  • Deformation control construction method based on short-distance underpass existing line and supporting structure

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Embodiment Construction

[0028] A detailed description will be given below in conjunction with the accompanying drawings.

[0029] The invention provides a deformation control construction method based on passing under the existing line at a short distance, and also provides a support structure for the tunnel to pass through the existing line closely.

[0030] A deformation control construction method based on passing under existing lines at short distances, at least including:

[0031] S1: Set several working holes under the existing line 1, and actively support the existing line 1.

[0032] S2: Before constructing the tunnel, set a reinforcement layer 5 between the top of the tunnel to be built and the existing line by removing the original soil.

[0033] S3: Set up a monitoring system for monitoring the settlement of existing lines to monitor the settlement of existing lines. Early warning is issued when the existing line has a tendency to settle.

[0034] S4: Support the reinforcement layer to ...

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Abstract

The invention relates to a deformation control construction method and a supporting structure based on short-distance underpass existing lines, and the method at least comprises the following steps: arranging a plurality of working holes below the existing lines (1), and actively supporting the existing lines (1); before the tunnel is constructed, a reinforcing layer (5) is arranged between the top of the tunnel to be constructed and the existing line in a manner of removing original soil; wherein the reinforcing layer (5) comprises a force bearing layer (3), the force bearing layer (3) is formed by splicing a plurality of hollow sheets (7), and the force bearing layer bears the load of the existing line (1) in a large-area contact mode under the support of force bearing columns. The bearing layer is light in weight and high in bearing capacity, the existing line can be supported without deformation, and large load and pressure cannot be applied to the tunnel.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a deformation control construction method and a supporting structure based on short-distance underpassing of existing lines. Background technique [0002] In the prior art, during the construction of subway stations and section tunnel structures under the existing lines, the distance between the tunnel and the existing line structures should be within 0-2m. Both the engineering geology and hydrogeology related to the environment of the tunnel are disturbed. The stratum between the two structures is thin, and technical measures cannot effectively reinforce the stratum. Therefore, the existing line is easily deformed during the construction process. [0003] In the prior art, the control of the deformation of the existing line is passive, and the change and maintenance of the bearing force are generally carried out when the deformation of the existing line is found, so ...

Claims

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Application Information

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IPC IPC(8): E21D9/00E21D11/00E21D11/10
CPCE21D9/008E21D9/001E21D11/003E21D11/10
Inventor 付春青李黎李旸杨义张照太林志达马亚仲李金伟付帅康
Owner 北京住总集团有限责任公司
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