摘要
以苏州市轨道交通2号线延伸线新发路站~星华街站区间隧道工程为背景,基于FLAC3D软件,对土压平衡盾构穿越富水粉细砂层进行模拟。数值模拟结果表明,土压平衡盾构机在富水粉细砂层施工会引起明显的规律性地表变形,并与监测数据基本吻合。根据模拟结果,优化掘进参数,显著降低了土压平衡盾构机在富水粉细砂层施工引起的地表沉降。
Taking the tunnel project of Xinfalu Station to Xinghuajie Station of the extension of Metro Line 2 in Suzhou as a background,simulation of earth pressure balance shield tunneling in water-rich sandy layer is established based on the FLAC3 D software. Numerical simulation results show that the earth pressure balance shield will cause ground settlement obviously with a certain degree of regularity in water-rich sandy layer,which consistent with the monitoring data. According to the simulation results,tunneling parameters are optimized,thus ground settlement caused by shield tunneling in water-rich sandy layer is reduced significantly.
出处
《铁道建筑技术》
2015年第10期19-22,共4页
Railway Construction Technology
基金
中铁十六局集团北京轨道交通工程建设有限公司科技研究开发计划课题(K2014-13C)
关键词
土压平衡盾构
富水粉细砂层
数值模拟
地表沉降
掘进参数
earth pressure balance shield
water-rich sandy layer
numerical simulation
ground settlement
tunneling parameter
