Regression analysis of 3D initial geostress field for dam site of Xiaowan Hydropower Station;

Displacement boundary technique for simulation of initial geostress and its application;

Back regression analysis on the initial geostress field of the Shuangjiangkou hydropower station;

Application of nerve network method in inversion analysis for initial ground stress;

study on initial ground stress in the area of underground power house of Shisanling Pumped-storage Power Plant;

Back analysis of initial ground stresses by 3D-FSM considering influence of terrain and tectonic stress;

Feedback analysis of initial earth stress field of rock masses in large-scale underground openings situated in valley zone;

Displacement function method for analyzing initial earth stress;

The feasibility to simulate the initial earth stress of the large underground structure by using the algorithm of dynamic relaxation and system damping in LS-DYNA is investigated.

For the block combination in which every block slides along single face,the initial stress is considered as known quantity,and the unknown numbers and equation numbers are equal in limit equilibrium principle.

2 Level in Chaili Mine,some research was done for the influence of initial crustal stress field on stability of roadway surrounding rock in the simulation of strata movement by UDEC numerical simulation computation.