Based on the high mining height of fully-mechanized top-coal caving in shallow thick coal seam and the few falling waste rock in goal, the key roof can not be supported effectively,the facture mechanical model of key roof was established.

Construction technique for opening section of shallow buried water conveyance tunnel;

Scattering of SH-wave by a shallow buried elliptic cylindrical cavity and dynamic stress concentration;

The first weighting procedure of shallow buried face under thin bedrock may be divided into 3 phrases: lower strata caving,key strata and its upper strata's damage and caving,lagged caving of loose strata.

A Brief Introduction to Design &. Construction of Shihuang Tunnel with Shallow Overburden;

Based on the principle of New Austria Tunneling Method,the Cross Diaphragm Method is usually selected to construct big-span shallow overburden highway tunnel.

In this paper,with the rectangle tunnel construction in the foreland soft rock with shallow overburden,FLAC is adopted to simulate the excavation of tunnel using partial excavation method,The mechanism of large deformation process of rectangular tunnel primary support is studied.