Abstract
AbstractIn the process of foundation pit excavation, different degree of soil stress release is inevitably caused, which leads to the displacement of supporting structure system and ground around the pit, resulting in additional stress and additional deformation to the adjacent tunnel. Excessive deformation will lead to cracking and leakage of the tunnel, which will affect the structural safety and normal operation of the tunnel. Therefore, it is necessary to study the influence law of foundation pit excavation on the existing tunnel, evaluate the stability of foundation pit and tunnel, and study the related technical measures to ensure the safety of tunnel and building foundation pit. This chapter for shallow buried tunnel adjacent formation deformation caused by the construction of foundation pit construction, the statistical analysis of building foundation pit excavation at home and abroad Law of influence on adjacent tunnel and Qingdao typical geological conditions of strata movement rule, for subsequent tunnel safety impact assessment, building foundation pit construction technology and construction technology and monitoring index, method and technology lay the foundation for improvement.
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