Settlement Monitoring of Monolithic Track Bed and Defect Analysis Based on Subway Tunnels
[Purposes]Due to poor geological conditions or other factors,the underground line tunnel proj-ect in the subway may cause uneven settlement and deformation of the monolithic track bed of the tunnel and track.In order to prevent the adverse diseases caused by the settlement and deformation of the tun-nel and its auxiliary structure during the operation of the subway,which will affect the safety of the sub-way,it is necessary to study the deformation of the monolithic track bed structure and the tunnel dis-eases.[Methods]By applying monitoring technology to analyze the settlement monitoring data of the monolithic track bed of the subway tunnel,and using non-destructive testing technology to analyze and study the diseases caused by the overall track bed of the tunnel,the health status of the subway tunnel can be grasped.[Findings]The monitoring results show that there is a slight subsidence in the disease section of the track bed of the subway tunnel,and there is a void and loose phenomenon in the concrete of the track bed,which provides technical support for the later defect remediation project and correspond-ing basis for taking safety prevention measures accordingly.[Conclusions]The research results provide practical reference value for ensuring the normal and safe operation of the subway.
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