Research On The Influence Of Connecting Passage Construction On Ground Surface Settlement

With the progress of science and technology and the rapid development of society and economy,my country's urbanization is developing rapidly,and at the same time,it is also facing increasingly serious ground traffic congestion.Generally speaking,buses and private cars can no longer meet the current transportation needs.With the emergence and gradual popularization of urban subways,urban subway construction has undoubtedly become an important way to relieve traffic pressure.While urban subways continue to develop,many insurmountable problems have also appeared.Among them,the construction of a connecting passage between two long-distance tunnels is a major problem.Since the structure of the connecting channel will lose part of the ground and destroy the balance of the original main tunnel,the structure of the connecting channel will inevitably lead to certain ground subsidence.This paper takes the connecting passage of a subway tunnel as an example.Based on real-time monitoring data,this paper summarizes the laws of surface settlement and the elastic modulus of the overlying soil,the reinforcement range of the connecting passage,the buried depth of the connecting passage,and the cross-sectional dimension span of the passage.The relationship between the tunnel position of the connecting channel and the structure of the connecting channel are compared.The impact degree caused by land subsidence is studied and analyzed.In order to study the impact of the construction of the connecting passage on the surface settlement,this paper analyzes the various factors of the connecting passage and then summarizes the law of the surface settlement of the connecting passage,including:In the process of underground construction,a reasonable design of the connecting channel model and a reasonable layout of the measuring points are carried out,and then the data monitoring and analysis are summarized.From many aspects,including the elastic modulus of the overlying soil layer on the connecting passage,the reinforcement range of the covering soil,the buried depth of the connecting passage,and the cross-section size span,the influence degree of the ground settlement caused by the construction of the connecting passage is studied and analyzed.Obtain the influence of multiple factors on the surface settlement of the connecting channel.The feature of this paper is to use actual multi-point data to comprehensively analyze the surface settlement model of the connecting channel from multiple angles,and sum up the law of surface settlement to provide guiding opinions on the construction of the connecting channel at this stage.