STUDY ON THE CONSTRUCTION AND FIELD MONITORING OF SPECIAL SECTIONS OF SHALLOW-BURIED METRO TUNNEL
In the temporary Channel Construction of Daping Subway Station in the first metro line of Chongqing, the methods of supporting roof with I-steel and broking rock with FengGao to knock down the existing Shallow-buried and soft-rock tunnel are adopted. Step by step circular excavation with some core soils left and artificial non-blasting excavation methods are adopted in the new construction of the tunnel. It is seen from field monitoring that the surface settling curve follows certain pattern, and the settlement is generally larger at places near the tunnels middle line. In weak and soft stratum, it is important to control the subsidence which is caused by the excavation of face and the second half cross section of the tunnel. When the right construction methods are used, the deformation of ground surface can be controlled, and reference is provided to similar projects in the future.
WEN WAN ZHI CHEN
Hunan Provincial Key Laboratory of Safe Mining Techniques of Coal Mines in Hunan university of science and technology, Xiangtan 411201, China
国际会议
The 7th International Symposium on Rockburst and Seismicity in Mines(2009年第七届国际岩爆与微振动性学术研讨会)
大连
英文
1031-1036
2009-08-21(万方平台首次上网日期,不代表论文的发表时间)