DESIGN & INSTALLATION OF SPECIAL TUNNEL RINGS TO MONITOR LONG TERM GROUND LOADING

In conjunction with a government/industry-sponsored research project to record long-term subsurface movements at two locations on the alignment of the Jubilee Line Extension running tunnels, it is proposed to install four special tunnel rings to provide additional information on the loadings to the tunnel linings due to both short- and long-term ground movements. For the covering abstract see ITRD E116463.