Stability Analysis and Application of an Underground Water-Sealed Rock Cavern Block

The construction process of an underground water-sealed rock cavern involves some complex types of rock. Block instability is a common problem during construction. In order to overcome the shortage of block theory and Unwedge (a software based on block theory that cannot analyze the specific block), sketch pictures have been developed to locate the specific block position and the existence of the block. By changing the span of blocks in Unwedge, the stability of the specific block was analyzed and proved through an engineering project. With the mentioned method, the blocks can be supported according to their specific position and size to reduce the support engineering and the amount of the project.