Corresponding analysis method for subway tunnel excavation surface subsidence causes

Abstract

The invention discloses a corresponding analysis method for subway tunnel excavation surface subsidence causes. The method is characterized by comprising the following steps: 1) consulting a subway detection report of a certain region, collecting a plurality of interval tunnels as detection samples from the subway detection report, and collecting and counting reason data of surface subsidence caused by excavation of the interval tunnels as the detection samples; 2) organizing and listing reasons, collected and counted in the step (1), of surface subsidence caused by tunnel excavation in each subway interval into an index matrix; 3) calculating a normalization matrix according to the index matrix obtained in the step 2); and 4) listing a tunnel interval-settlement reason matrix according tothe normalization matrix calculated and obtained in the step 3). The corresponding analysis method has the advantages that the defects in the prior art can be overcome, and the tunnel interval-settlement reason calculation method is reasonable and novel in structural design.

Description

technical field [0001] The invention relates to a corresponding analysis method for the cause of surface subsidence during excavation of a subway tunnel, belonging to the field of civil engineering. Background technique [0002] In recent years, with the process of urbanization in our country, the growth of urban population has brought enormous pressure to urban traffic, and many cities have begun to develop underground tunnel construction one after another. With the increase of subway tunnel construction projects, tunnel construction accidents tend to occur frequently, and the construction safety of underground projects has attracted great attention from the whole society. The increase in the size of the tunnel and the stable operation of the subway all require that the normal construction and use of the tunnel will not be affected by excessive surface settlement during excavation. Surface subsidence lasts for a long time, affects a wide range, and is difficult to prevent ...

AI Technical Summary

Problems solved by technology

This paper is not deep enough in the study of subway tunnel disease statistics and classification, mainly because the statistical samples are too small to form regularity, resulting in insufficient depth of disease classification research; the selected evaluation indicators are unreasonable; evaluation methods or criteria are unreasonable, mainly reflected in There is strong subjectivity in the selection of index weights and the criteria for comprehensive evaluation.

[0005] In addition, the correspondence analysis method has not been applied to analyze the causes of surface subsidence caused by subway tunnel excavation

[0006] At present, there are many studies on the surface settlement caused by the excavation of subway tunnels, most of which only analyze and simulate the settlement cause of a specific section of the tunnel, so the statistical data and laws of the settlement cause are not universal

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