TBM construction scheme for the main horizontal tunnel passing through solution cavity in Taishan mine;

Due to the rigorous time limit of drain tunnel in Jinping-II Hydropower Project,compact plane layout that can satisfy the requirements of quick TBM assemble is designed for the TBM assemble cavern,minimal cross-section that can satisfy the assemble is designed,reinforcement pattern consisting of rock bolts,shotcreting and wire meshing is designed.

Study on simulation and optimization of tunneling with TBM for long tunnel;

Leading face of TBM construction in the long diversion tunnel of Xinjiang eighty-one Daban was taken as a case.

Stability analysis of rock foundation with cave in karst area;

In accordance with characteristic of cave and fissure carbonate reservoir in the area,the connection type and connectivity between fracture and cave are preliminary analyzed.

This paper makes a brief overview on the resistivity tomography of principle,method and mechanism of the formation of cave.

Discuss transact of solution cave during borehole process;

A great many solution caves developed in the Ordovician carbonate reservoir of Tahe Oilfield, with their maximal diameter reaching tens of meters each.

After the investigation and study on Alluvial Tin deposit in Changning Dayishan Mine,Conclude that its geologic setting mainly iles in its structure and land form a proper scale of Alluvial Tin deposit were found in the limestone solution cave around Dayishan granite body.