UTILIZATION AND STRENGTHENING OF ROCK MASS OF DIVISION PIER AT TGP PERMANENT SHIPLOCK
三峡永久船闸中隔墩岩体利用与加固

The reserved rock mass between two lines of TGP permanent ship lock is used as their division pier, which is obviously superior in economy to the scheme of removing the rock mass and constructing a concrete division pier at its location. The rock mechanics problems encountered in the course of excavating the lock chambers, such as cracking on the surface of reserved rock masse the potential movable rock blacks on the top of vertical excavated wall, and the large faults, were all salved through engineering treatment measures developed by field dynamic designs and the reserved rock mass is strengthened.