Author(s): Liu Yuyong, Yao Xiaoming, Wang Bin, Southwest Research Institute of China Railway Engineering Co., Ltd.
Pages: 447-450
Year: 2016 Issue:  S1
Journal: Construction Technology
Keyword:  subways; shields; water rich sand pebble formation; settlement; failures; monitoring feedback technology;
Abstract: Shield tunnel construction in urban subway tunnel construction is playing an increasingly important role. Shanghai,Guangzhou,Beijing and other cities in China have adopted successfully implemented many projects of shield method,geological situation very different from the city of Chengdu,Chengdu area is given priority to with water sand pebble stratum,easily induced ground subsidence,collapse,settlement and lag and sudden,can draw lessons from the experience of the few,combined with two danger case analysis Chengdu water rich sand pebble formation of earth pressure balance shield construction monitoring and feedback of technical problems,by the monitoring feedback technology application in the subway shield construction failures of collapse and early warning,in order to provide reference in the similar strata shield security construction and reference.