Method for protecting underground structure of single round shield side face construction in close distance

An underground structure, close-range technology, applied in underground chambers, earth-moving drilling, wellbore lining and other directions, can solve the problem of undocumented measuring point layout method, not suitable for single-circle shield tunnel to pass through underground structures at close range, and unclear real-time monitoring. and shield construction, etc., to ensure the effect of normal use

Inactive Publication Date: 2009-12-23
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0004] After searching the existing technical literature, it is found that the inventors are Zhou Wenbo, Gu Chunhua, Wu Huiming, etc., and the application number is CN200610116618.X. The technology adopts the pre-preparation for crossing buildings or structures, taking protective measures for buildings or structures in advance, construction monitoring, setting reasonable shield construction parameters when crossing buildings or str

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  • Method for protecting underground structure of single round shield side face construction in close distance
  • Method for protecting underground structure of single round shield side face construction in close distance
  • Method for protecting underground structure of single round shield side face construction in close distance

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[0035] Example:

[0036] There is an underground passage to be built next to the tunnel of a certain subway section. The construction of the underground diaphragm wall of the passage has been completed. It passes through the side of the section tunnel at a short distance. The main structure inside the passage is under construction, and part of the lining structure has been completed. The underground diaphragm wall of the channel is connected with the receiving shaft of the end shield in an L shape, such as figure 1 , 2 As shown in the figure, the side of the shield passes through the underground diaphragm wall plane and the side of the shield passes through the diaphragm wall at close range. The length of each segment of the shield is 1.2m and the thickness is 0.35m.

[0037] The specific implementation steps of this embodiment are as follows:

[0038] (1) After detailed geological exploration, the distribution of soil layers and soil physical and mechanical indicators in th...

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Abstract

The invention relates to a method for protecting an underground structure of single round shield side face construction in close distance, belonging to the technical field of constructional engineering. The method comprises the following steps: using a Robertson method; determining the parameters of a shield traversing underground structure through the design drawings of the underground structure and tunnels; using three-dimensional finite element model to perform numerical simulation; establishing monitoring programs, carrying out measuring points layout and monitoring in site before traversing construction; detecting the work efficiency of trial push and selecting construction parameters; carrying out construction through monitoring feedback analysis in real time; and tracking and monitoring the set monitoring points until all monitoring data are stabilized within the range of the optimized safety construction parameters of step (6). The invention ensures the normal use and the smooth tunneling of the underground structure, the adopted technical measures is applicable to the requirements of single round shield side face in close distance on passing through various underground structures, thus an important technical assurance is provided.

Description

technical field [0001] The invention relates to a method in the technical field of construction engineering, in particular to a method for protecting an underground structure by short-distance construction on the side of a single-circle shield. Background technique [0002] With the acceleration of urban construction and the need to make full use of urban construction space resources, urban underground space is further developed, and underground pipelines, tunnels, and other underground buildings and structures are increasingly dense, and domestic urban rail transit construction is developing more and more rapidly. In the construction of rail transit, the shield tunneling method has been applied more and more in China due to its superiority. In order to form a rail transit network as soon as possible to achieve the expected scale effect, the construction of rail transit is also accelerating. However, urban planning and construction, especially along with the increase of dev...

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Application Information

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IPC IPC(8): E21D9/00E21D9/093E21D11/00
Inventor 孙阳沈水龙罗春泳
Owner SHANGHAI JIAO TONG UNIV
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