Compound reinforcing soil structure with soft soil shield penetrating through existing subway and construction method

An existing subway and reinforcement structure technology, applied in earthwork drilling, underground chamber, wellbore lining, etc., can solve problems affecting locomotive comfort, segment cracking, bolt failure, etc., and achieve good overall support effect and control The effect of deformation and reinforcement of soil

Pending Publication Date: 2018-04-17
ZHEJIANG UNIV CITY COLLEGE
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  • Claims
  • Application Information

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Problems solved by technology

Newly built shield tunnels will have many adverse effects on existing subway tunnels, such as segment cracking, joint opening, bolt failure, uneven longitudinal settlement, and excessive horizontal displacement, especially in existing

Method used

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  • Compound reinforcing soil structure with soft soil shield penetrating through existing subway and construction method
  • Compound reinforcing soil structure with soft soil shield penetrating through existing subway and construction method
  • Compound reinforcing soil structure with soft soil shield penetrating through existing subway and construction method

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the examples. The description of the following examples is provided only to aid the understanding of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0038] Such as Figure 1 to Figure 9 As shown, the soft soil shield passing through the soil composite reinforcement structure of the existing subway can effectively control the settlement and segment damage of the existing subway, so that the shield can advance smoothly. The soil composite reinforcement structure of the soft soil shield passing through the existing subway includes: Hangzhou Metro Line 2 Down Line 1, Hangzhou Metro Line 2 Up Line 2, Hangzhou Metr...

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Abstract

The invention relates to a soil composite reinforcement structure for a soft soil shield passing through an existing subway, comprising: a shield tunnel outline, an angle-adjustable pipe shed and a horizontal rotary grouting pile; There is a row of adjustable-angle pipe sheds, the adjustable-angle pipe sheds include pipe shed steel pipes, and horizontal jet grouting piles are arranged between the adjacent pipe shed steel pipes, and the horizontal jet grouting piles wrap the adjustable-angle pipe sheds The horizontal jet grouting piles are overlapped with the adjacent horizontal jet grouting piles; the horizontal jet jetting piles include jetting drill pipes and drill pipe casings, and the pipe shed steel pipes are connected alternately with the jet jetting drilling pipes. The beneficial effects of the present invention are: the present invention uses the adjustable angle pipe shed and the horizontal rotary spraying in combination, combining rigidity and softness, both soft and hard, not only giving full play to their respective characteristics, but also working well together, and achieving good overall support It can well adapt to the environment of soft soil areas, strengthen the soil, and can well control the deformation of the existing subway.

Description

technical field [0001] The invention relates to the field of soil compound reinforcement construction in which a shield machine passes through an existing subway in a soft soil area, in particular to a soil compound reinforcement structure and a construction method for a shield machine to pass through an existing subway in a soft soil area. Background technique [0002] With the continuous advancement of the urbanization process, urban underground rail transit is becoming more and more important. To build a complete subway network, there must be intersections of subway lines. In shield construction of subway tunnels, the number of new shield tunnels crossing existing subway tunnels is increasing day by day. Newly built shield tunnels will have many adverse effects on existing subway tunnels, such as segment cracking, joint opening, bolt failure, uneven longitudinal settlement, and excessive horizontal displacement, especially in existing tunnels in soft soil areas. Deformat...

Claims

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Application Information

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IPC IPC(8): E21D9/00E21D11/00E21D11/10
CPCE21D9/001E21D11/003E21D11/107
Inventor 丁智费豪张霄
Owner ZHEJIANG UNIV CITY COLLEGE
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