Abstract
In recent years, a number of in-ground storage tanks have been constructed because they have some advantages from viewpoints of safety, landscape and effective utilization of land space. However, the construction of in-ground tanks involves usually very deep excavation works, for which some high-level techniques are required.
Among many LNG, LPG and oil in-ground storage tanks, an example of the largescale excavation work in soft rock mass is introduced in this paper. In this work the ground behavior to the final depth of excavation has been estimated by using a simulation method on the basis of the measured data. This observational construction method has realized the highly accurate estimation of the ground behavior during the whole excavation work.
