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Shield crossing loess stratum will encounter many engineering problems such as excessive local soil deformation and ground collapse crater. Based on the phenomenon and characteristics of soil deformation caused by large-diameter shield crossing loess strata, this paper summarizes the soil deformation curve, analyzes the causes of loess reaction and ground deformation, and summarizes the main causes and laws caused by shield crossing loess strata. And the fuzzy mathematical method is used to analyze the main influencing factors and provide theoretical support for the subsequent numerical simulation objectives.

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