Taking example for the deformation and fracture mass at the right bank of a hydroelectric station in Southwest China,the upstream and downstream boundaries,the front and back boundaries of the deformation and fracture mass were determined using geological qualitative analysis of topography,geomorphology features first.

Research on chaos behaviour of rock mass deformation affected by mining;

Deep rock mass deformation monitoring on high slope of TGP s ship lock;

Optical fiber sensor is embeded in rock layer of model to find premonitory information of rock deformation and the process of rock damage with mining.

Based on Biot consolidation principle, a pore elastic finite element model is proposed for instable flow, which can be used to study the influence of longwall mining on rock deformation and hydrogeological environment.

According to the measurement during excavation of Jinzhou tunnel with four lanes in one cave which lies on the rebuilt highway from Shenyang to Dalian,this paper analyzes the rock deformation rule,discusses the reason of instability after a highway tunnel was excavated,emphasizes the necessity of the construction stability monitor and active control.