富水粉细砂地层隧道内层间水处置技术研究  

INTERL AYER WATER TREATMENT TECHNOLOGY FOR TUNNEL IN WATER-RICH FINE SAND STRATUM

作　　者：张功 王贺旺 李皓 王秋生 张志鹏 陈浩然 ZHANG Gong;WANG He-wang;LI Hao;WANG Qiu-sheng;ZHANG Zhi-peng;CHEN Hao-ran(General Contract Department of Rail Transit and Municipal Engineering,Beijing Uni-Construction Group Co.,Ltd.,100029,Beijing,China)

机构地区：[1]北京住总集团有限责任公司轨道交通市政总承包部,北京100029

出　　处：《建筑技术》2023年第10期1202-1204,共3页Architecture Technology

摘　　要：针对当前富水粉细砂地层地铁隧道施工过程中,由于掌子面层间残留水常引起地面沉降变形大、施工坍塌及文明施工差的难题,通过采用物理场耦合软件建立模型系统研究并验证了洞内施打管井进行层间水疏散处理的可行性,洞内降水井同时开启后,两侧降水渗流场迅速形成起到疏水效果,中间降水井由于受邻近降水及结构物影响导致降水初期效果较差,随着降水时间增加逐渐形成。洞内降水能够快速降水,该方法施工成本低,见效快,具有较大的应用推广价值。In order to solve the problems of collapse and the poor civilization caused by the residual water between layers during the tunnel construction in water-rich fine sand stratum,the pipe well in the tunnel cave is applied to evacuate interlayer water,the feasible evacuation treatment of interlayer water in the cave within pipe wells is studied and verified by simulation analysis using the physics coupling software,the precipitation wells in the cave are opened at the same time,and the precipitation seepage field on both sides is rapidly formed to play a hydrophobic effect,and the intermediate precipitation well play poor in the initial precipitation due to the influence of adjacent precipitation and structures,and gradually which forms seepage field with the increase of precipitation time.Precipitation in the cave can quickly reduce water level,and the method has low construction cost,quick effect and great application and promotion value.

关 键 词：富水粉细砂层 隧道 暗挖 管井 降水 

分 类 号：TU74[建筑科学—建筑技术科学]