临海富水地层地铁隧道施工降水试验研究  

Analysis of Dewatering Test During Construction of Subway Tunnels in Coastal Water-rich Stratum

作　　者：罗利 付华永 陈奇 李彪[2] 胡中华 LUO Li;FU Huayong;CHEN Qi;LI Biao;HU Zhonghua(China MCC5 Group Co.,Ltd.,Chengdu,Sichuan 610023,China;Southwest Petroleum University,Chengdu,Sichuan 610599,China)

机构地区：[1]中国五冶集团有限公司,四川成都610023 [2]西南石油大学,四川成都610599

出　　处：《施工技术（中英文）》2023年第24期136-142,共7页Construction Technology

基　　金：国家自然科学基金(51809221)。

摘　　要：以深圳某地铁隧道临海富水砂层段为背景,通过现场工作面附近布设试验降水井,研究地下水位变化及补水关系,根据现场降水试验结果,运用降水理论公式估算临海段地层渗透系数、涌水量,分析了海水与隧道施工区域地下水连通对施工涌水的影响。研究结果表明,临海富水地层地段施工降水易引起海水补给场区地下水,隧道施工期间需采取注浆加固等堵水措施,确保地铁隧道施工质量、安全。Taking the construction of subway tunnels in water-rich stratum near a sea in Shenzhen as the background,experimental drainage wells were arranged near the on-site working face to study the changes in groundwater level and its relationship with water replenishment.Based on the results of on-site dewatering tests,the permeability coefficient and water inflow of the formation in the coastal section were estimated using precipitation theory formulas,and the impact of the connection between seawater and groundwater in the tunnel construction area on construction water inflow was analyzed.The research results show that the construction precipitation in the water-rich stratum near a sea may causes seawater to recharge the groundwater in the site area.During tunnel construction,grouting reinforcement and other water blocking measures need to be taken to ensure the quality and safety of subway tunnel construction.

关 键 词：地铁 隧道工程 富水地层 降水 渗透系数 涌水量 试验 

分 类 号：U231.3[交通运输工程—道路与铁道工程]