SEGJ Technical Conference


Estimation of S-wave velocity around tunnel,using seismic reflection profiling data from undersea shield tunnel


Abstract
To obtain S-wave velocity around the underwater shield tunnel of existing at Tokyo Bay, we recheck the seismic reflection profiling data from the inside of the tunnels. To compare upside time-section of top receivers with same one of bottom receivers inside tunnel, is valid to estimate S-wave velocity around the shield tunnel.