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Determining and estimating method for surface subsidence characteristic parameters caused by subway tunnel construction

A technology of surface subsidence and characteristic parameters, applied in special data processing applications, calculations, electrical digital data processing, etc., can solve problems such as insufficient research on the estimation of surface subsidence characteristic parameters

Inactive Publication Date: 2015-10-07
QINGDAO TECHNOLOGICAL UNIVERSITY
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Problems solved by technology

However, there is insufficient research on the estimation of characteristic parameters of surface subsidence

Method used

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  • Determining and estimating method for surface subsidence characteristic parameters caused by subway tunnel construction
  • Determining and estimating method for surface subsidence characteristic parameters caused by subway tunnel construction
  • Determining and estimating method for surface subsidence characteristic parameters caused by subway tunnel construction

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Embodiment Construction

[0074] Below in conjunction with accompanying drawing, the present invention is described in further detail, taking a certain subway station in Qingdao as an example:

[0075] Step 1: Determination of relevant parameters for survey, construction and support of subway tunnels already dug in the region;

[0076] 1. Overview of the station

[0077] The station is located at the intersection of Nanjing Road and Jiangxi Road in Qingdao, along the north-south direction of Nanjing Road. The station is located at a location where the ground traffic flow is large and the municipal pipelines are dense; the west side is a high-rise residential building, and the east side is a multi-storey brick-concrete residential building. It is an island platform station with two floors underground. The station is constructed by underground excavation method. The buried depth of the vault is 9.3-10.5m, the overlying rock is 2.8-6.4m, and the double-layer large arch foot composite lining structure is...

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Abstract

The present invention relates to a determining and estimating method for surface subsidence characteristic parameters caused by subway tunnel construction. The determining and estimating method comprises the following steps of: (1) determining related parameters for investigating, constructing and supporting a dug subway tunnel; (2) observing surface subsidence of the dug subway tunnel, and recording subsidence data; (3) calculating the surface subsidence characteristic parameters of the dug subway tunnel, including the width of a subsidence tank, the ground loss ratio, a width coefficient of the subsidence tank and an influence angle; (4) inputting data parameters and monitoring data of the dug subway tunnel and the fitted surface subsidence characteristic parameters in various conditions into a data table, and searching the relationships and the laws among the data; and (5) determining the related parameters for investigating, constructing and supporting a to-be-dug subway tunnel, searching parameters that are consistent with or generally similar to the existing parameters from the data table, estimating the surface subsidence characteristic parameters of the to-be-dug subway tunnel, drawing a surface subsidence tank curve by substituting a Peck formula through the estimated characteristic parameters, estimating the influence range, and regulating a construction scheme.

Description

technical field [0001] The invention belongs to the field of urban underground engineering construction safety, and relates to a comprehensive analysis of observation data of surface settlement caused by subway tunnel construction, prediction of surface settlement and control of surface settlement, in particular to a method for measuring and estimating characteristic parameters of surface settlement caused by subway tunnel construction. Background technique [0002] In many large cities, the increase of urban population density has caused a series of social problems, such as population expansion, traffic congestion, and housing shortage. Reasonable development and utilization of underground space is a very effective solution. The construction of urban subway has greatly relieved the pressure of urban traffic, and has the advantages of safety, reliability, convenience, and comfort. At the same time, it occupies less land and basically does not damage the ground landscape. How...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 于广明王继亮袁长丰李冰冰张洋
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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