Abstract:Due to the particularity of dredger fill, slurry shield tunneling will cause large ground deformations during undercrossing dredger fill. Based on a practical example of Shanghai Metro line 11, the transverse variation curves of ground settlement under different construction conditions are analyzed. Some construction control measures are proposed for the slurry shield undercrossing dredger fill. This study may serve as reference for the similar projects.
[1] 刘 靖. 泥水盾构穿越吹填土施工控制技术研究[D]. 上海: 同济大学, 2011. (LIU Jing. Study on slurry shield tunneling through dredger fill[D]. Shanghai: Tongji University, 2011. (in Chinese)) [2] 蒋 睿. 大直径软土盾构隧道工程地层沉降规律分析[J]. 中国市政工程, 2010(1): 48-50. (JIANG Rui. Rule analysis of stratum subsidence of large diameter & soft ground shield tunnel works[J]. China Municipal Engineering, 2010(1): 48-50. (in Chinese)) [3] 杨 坪. 上海冲填土工程特性及自重固结变形机理研究[D].上海: 同济大学, 2007. (YANG Ping. Engineering characteristics and self-weight consolidation deformation mechanism of Shanghai dredger fill[D]. Shanghai: Tongji University, 2007. (in Chinese)) [4] 史玉金, 严学新, 周念清. 长江河口滨海地区冲填土对地面沉降效应-以上海市临港新城为例[J]. 工程地质学报, 2007, 15(03): 391-394. (SHI Yu-jin, YAN Xue-xin, ZHOU Nian-qing. Land subsidence induced by recent alluvial deposits in Yangtze River delta area-a case study of Shanghai Lingang new city[J]. Journal of Engineering Geology, 2007, 15(03): 391-394. (in Chinese))