The shallow buried covered excavation waterproof technique of subway station

The study on the effect of ground surface settlement,depending on shallow buried covered excavation method during subway construction is of greater importance.

Authors studied the shallow buried covered excavation construction of the No.

In the fourth age stratum of cities,underground cutting with shallow overburden much more strictly require that soil movement must be controlled at the permitted range for the security of the structure.

With a great of underground being builded in many megapolis,the method of underground cutting with shallow overburden has wide foreground.

Through the construction practice of Wangfujing-Dongdan tunnel of Beijing subway s Fuxingmen-Bawangfen line,the construction techniques of multi -tunneling at shallow depth under condition of friable and watery strata are analyzed and summed up.

Research on effect of existing buildings by adopting shallow tunnel construction in soft flowing mucky ground;

Especially in the downtown area where the construction of tunnels, shallow excavation is a more appropriate approach.

The shallow excavation technique was successfully implemented in constructing the underground passage in a slit formation,which breaks the point that slit formation is the forbidden region for excavation.