Compared with the data of the groundwater level monitored by artificial and automatic measures before and after the implementation of underground drainage works,it is shown that the slope groundwater level has declined after excavating the underground drainage tunnel in crushed-rock slope.

Three-dimensional numerical simulation and analysis of excavation and support in underground tunnel;

Comparison of models for heat exchange calculation inside underground tunnel of hydra-power plant

From the analysis of Shawan underground tunnel model,we take the cross section of IV surrounding rock as an example to calculate the displacement and stress of surrounding rock,lining and the stress of anchor bolts,then to research the influences of various excavation types of the tunnel surrounding rock s stability.

By analyzing the project examples and the built projects,the article thinks it is logical and economic to apply firing prestressed concrete lining structure in the high-pressured water tunnel if the condition permits.

Concrete lining of water tunnel is an important step in tunnel construction.

Acting loads of water tunnel and their statistical data are carefully analyzed,and math models are established.

Numerical simulation of a rock burst in long and wide diversion tunnel;

Comparison between wedge-shaped cutting and parallel cutting applied to excavation blasting of water diversion tunnel for Langwaihe Hydropower Station;

Simulation on ventilation and dust diffusion on heading face of the diversion tunnel;