Construction method of urban underground channel in same direction as existing line

A technology of underground passages and construction methods, applied in underground chambers, tunnels, tunnel linings, etc., can solve problems such as safety accidents, achieve the effects of avoiding safety accidents, protecting traffic safety, and facilitating timely monitoring

Inactive Publication Date: 2019-08-09
中铁二十三局集团第六工程有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem existing in the prior art that if the newly excavated passage is in the same direction as the existing pipeline, it is easy to cause safety accidents during the excavation of the urban underground space passage, and to provide a Construction Method of Urban Underpass with Lines in the Same Direction

Method used

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  • Construction method of urban underground channel in same direction as existing line
  • Construction method of urban underground channel in same direction as existing line
  • Construction method of urban underground channel in same direction as existing line

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Embodiment

[0028] see Figure 1-Figure 3 . The embodiment of the present invention provides a kind of construction method of the urban underground passage in the same direction as the existing line, and the construction method of the urban underground passage comprises the following steps before excavation of the passage:

[0029] S11. Deep hole grouting on the upper half section;

[0030] S12. Make a small conduit ahead of the arch to form a shed support system;

[0031] S13. Grouting the small catheter.

[0032] Among them, in step S11, the hole-forming process is drilled with a double-tube drilling rig, and the step-back grouting is reinforced. The range of the grouting circle is not less than 1m according to the upper half section of the tunnel and the excavation contour. In this embodiment, the scope of the grouting circle is 1.5m outside according to the upper half section of the tunnel and the excavation contour.

[0033] When grouting, the holes are arranged according to the ...

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Abstract

The invention relates to the field of urban underground space construction methods, in particular to a construction method of an urban underground channel in the same direction as an existing line. Before the channel is excavated, the construction method includes the following steps that S11, deep hole grouting is conducted on an upper half section; S12, an advanced small pipe is driven at an archpart to form a shed protecting support system; and S13, grouting is conducted on the small pipe, and after the steps are completed, the channel is excavated. Deep hole grouting is conducted before the channel is excavated, the shed protecting support system is formed through the small pipe, and support before channel excavation is realized, so that in the excavation process, the stability of a soil body can be guaranteed, and safety accidents are avoided.

Description

technical field [0001] The invention relates to an urban underground space construction method, in particular to an urban underground passage construction method in the same direction as an existing line. Background technique [0002] With the advancement of urbanization, the development of urban underground space has become an important part of urban construction. Urban underground space development mainly refers to the construction of subways and pipelines. During the construction process, a large number of channels need to be excavated. In large and medium-sized cities, the degree of urban underground space development is already quite high. On this basis, work such as subway construction continues, and new excavation work will inevitably be in the same direction as existing pipelines. In this process, the new excavation work is very likely to interact with the existing pipelines, causing soil collapse and safety accidents. In the prior art, there is no mature solution...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10E21D9/00E21D20/02
CPCE21D9/001E21D11/105E21D20/02
Inventor 杨西富肖毅王峰徐振龙李小军杨建明赵瑞亮何继华巩森许彪王后高方业飞武俊杰夏代军
Owner 中铁二十三局集团第六工程有限公司
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