富水砂层泥水盾构施工孔隙水压反应研究  

Research on Pore Pressure Reaction Caused by Slurry Shield Tunneling in Watery Sandy Stratum

作　　者：陈相宇 阳军生[3] 梁禹[4] 张箭 叶雅图 Chen Xiangyu;Yang Junsheng;Liang Yu;Zhang Jian;Ye Yatu(Guangzhou Metro Design and Research Institute Co.,Ltd.,Guangzhou 510000,P.R.China;Railway Consultants Co.,Ltd.,Guangzhou 510000,P.R.China;College of Civil Engineering,Central South University,Changsha 410075,P.R.China;School of Engineering,Sun Yat-Sen University,Guangzhou 510000,P.R.China;College of Civil and Transportation Engineering,Hohai University,Nanjing 210098,P.R.China)

机构地区：[1]广州地铁设计研究院有限公司,广州510000 [2]中交铁道设计研究总院有限公司,广州510000 [3]中南大学土木工程学院,长沙410075 [4]中山大学工学院,广州510000 [5]河海大学土木与交通学院,南京210098

出　　处：《地下空间与工程学报》2018年第4期1064-1071,共8页Chinese Journal of Underground Space and Engineering

基　　金："十三五"国家重点研发计划课题(2016YFC0802504);国家自然科学基金青年科学基金(51708564);广州市科技计划项目(201804010107);中国博士后科学基金面上资助项目(2017M621608;2018M633223)

摘　　要：依托长沙市南湖路湘江大型江底盾构隧道工程,对大直径泥水盾构掘进引起的富水粉细砂地层孔隙水压力反应进行了分析研究。基于孔隙水压力测试数据,分析了大直径泥水盾构在富水粉细砂地层掘进时地层孔隙水压力的分布情况及变化规律。采用ABAQUS有限元软件建立了三维流固耦合数值模型,对泥水盾构施工引起的富水粉细砂地层孔隙水压变化进行模拟计算,对比现场测试数据,验证了本文三维流固耦合数值模型的合理性;将三维流固耦合模型应用于地层不同渗透性条件下孔隙水压力反应模拟计算,分析地层注浆加固后孔隙水压力扰动规律,评价加固效果,得出富水粉细砂地层盾构施工对孔压的扰动可采取预注浆加固进行有效控制结论。Based on the project of Xiangjiang large diameter shield tunnel at Nanhu Road in the city of Changsha,the pore water pressure reaction caused by slurry shield tunneling in watery stratum was studied.Distribution and variation of pore water pressure during tunneling in watery stratum was analyzed by means of field test. Through the three-dimensional coupled solid-fluid numerical model（ ABAQUS）,the pore water pressure caused by large diameter slurry shield tunneling in watery sandy stratum is simulated,meanwhile,the simulated result is compared with field monitoring date,and the validity of the finite element model is verified. This mode is applied to simulation for reaction of pore water pressure in the stratum with different permeability,and the law of disturbance of pore water pressure in reinforced layer is analyzed,the effectiveness of ground consolidation is evaluated,the conclusion is drawn that the pore pressure reaction caused by slurry shield tunneling in watery sandy stratum can be weakened obviously by means of grouting reinforcement.

关 键 词：富水粉细砂 大直径泥水盾构 孔隙水压力 流固耦合 数值模拟 注浆加固 

分 类 号：U459.5[建筑科学—桥梁与隧道工程]