Study on the impacts on the above railway from the construction parameters of bridge type shield;

Turnabout of a Shield Machine in an Underground Cavern;

Principles for selecting of shield;

Analysis of Grounding Protection System of Shield during Operation

Propulsion system and failure recovery of the shield machine;

On loss form of hob in earth pressure balance shield machine;

Construction technique on shield machine s station-crossing movement;

Solve the problem of limited putting place of shield crane by structural propping;