摘要
根据上海某超长盾构隧道工程监测的实践,介绍了盾构隧道监测的一般内容:地表沉降和地下管线安全监测;地面房屋沉降和倾斜观测;水位测试;土体水平位移监测和局部地段隧道沉降、净空收敛监测。并从几个方面对监测数据作了详细的分析,得出了盾构推进方向和隧道纵向的沉降变化及隧道横向沉降槽的变化规律,同时分析了盾构切口距建筑物沉降点距离和沉降量的关系,最后得出了盾构推进和地表沉降的变化规律,提出了地表沉降的5个阶段,即:前期沉降阶段;开挖面前的隆沉;通过期间沉降阶段;盾尾间隙沉降阶段和后期沉降阶段。
According to practice in extra-long sheid tunnel construction monitoring in Shanghai, this paper introduces such monitorings： including, grand surface settlement and undergrand pipeline safety; building settlement and inclination; undergrand water level; soil horizontal displacement and partial funnel settlement and clearance convergence. Having analyzed monitoring data, the rule of tunnel longifudinal settlement fluctuation and tunnel fransverse settlement groove surface flucfuation with sheild propelling direction was obtained, and the relation between distance from shield cutter to building and its settlement was analyzed, then the grand settlement fluctuation rule with sheild propelling was reached. 5 stages of grand surface settlement flucfuation is introduced：settlement, forestage swell stage ahead of sheild cutter, settlement stage during sheild passing, settlement stage of gap behind sheild end and settlement poststage.
出处
《南京工业大学学报（自然科学版）》
CAS
2005年第4期44-48,共5页
Journal of Nanjing Tech University(Natural Science Edition)
基金
上海城建集团机械施工公司资助
关键词
纵向沉降
横向沉降槽
等变化线
longitudial settlement
transverse settlement groove
settlement isoline
