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

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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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 structures at short distances, and double-circle shield tunneling after crossing. Grouting and other steps, but this technology is not suitable for the single-round shield to pass through the underground structure at close range. At the same time, the construction monitoring of this technology does not record the method of measuring point layout, nor does it clarify the relationship between real-time monitoring and shield construction.

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