STUDY OF CONSTRUCTION TECHNOLOGY FOR SUBSURFACE EXCAVATION OF METRO TUNNEL GROUP IN COMPLEX ENVIRONMENT
DUAN Baofu1，2，LI Lei1，2
(1. College of Civil Engineering and Architecture，Shandong University of Science and Technology，Qingdao，Shandong 266590，China；2. Shandong Provincial Key Laboratory of Civil Engineering and Disaster Prevention and Mitigation，Shandong University of Science and Technology，Qingdao，Shandong 266590，China)
Abstract：The lines No.5 and No.7 of Shenzhen metro are designed as double-tube overlapped two-storey tunnels from Taian Station to Yijing Station. The upper and lower tunnels are staggered for a certain distance and then excavated synchronously in construction process. Due to the complex environment and relatively poor geological condition，advanced small pipes grouting with cement-water glass(CS) is supplemented for water-seal and reinforcement. According to different cross-sections of tunnels，reasonable construction technologies are selected to reduce the disturbance to soils. These measures improve the construction environment effectively，ensures the safe construction of the project，and shortens the construction period greatly. This project can porvide reference values to similar domestic projects.
段宝福1，2，李 磊1，2. 复杂环境下地铁暗挖洞群施工工艺研究[J]. 岩石力学与工程学报, 2012, 31(S1): 2776-2782.
DUAN Baofu1，2，LI Lei1，2. STUDY OF CONSTRUCTION TECHNOLOGY FOR SUBSURFACE EXCAVATION OF METRO TUNNEL GROUP IN COMPLEX ENVIRONMENT. , 2012, 31(S1): 2776-2782.
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2012, Vol. 31 
