Application of Natural Source Surface Wave in Urban Road Emergency Detection
In recent years,with the acceleration of urbanization and the increasing density of transportation infrastructure,urban road subsidence and collapse incidents occurre frequent-ly due to various factors such as construction activities,geological environment changes,ag-ing of underground pipelines,and natural disasters.There is an urgent need for a rapid and non-destructive geophysical method to provide a basis for emergency response.This paper proposes the natural source surface wave method,utilizing a linear large-channel array to capture high-frequency signals within the natural source surface waves.Comparative experi-ments are conducted on data acquisition duration and the number of channels used in data processing.Following data processing,shear wave velocity profiles are obtained,swiftly i-dentifying four low-velocity anomaly zones and two high-velocity anomaly zones.Through comprehensive analysis of surface surveys,geological data,and borehole information,the paper infers that the low-velocity anomaly zones(with shear wave velocities ranging from 150 to 250 m/s)represent loose formations caused by water-saturated strata.The two high-velocity anomaly zones(both with shear wave velocities between 450 and 500 m/s)are com-posed of one high-velocity body formed by bridge pile foundations and another formed by post-treatment concrete filling.The results demonstrate the effectiveness of the natural source surface wave method in emergency inspections of urban roads.
万方数据
维普
