大直径钢顶管洞门渗漏水原因分析及处理措施

Cause analysis of water leakage for tunnel portal of large diameter steel pipe jacking and the treatment measures

依托上海市黄浦江上游水源地连通管工程,对大直径钢顶管工程中的洞门渗漏水原因进行分析,通过在洞门止水钢环上加设一道橡胶板并临时压注聚氨酯,顺利解决洞门渗漏水问题,控制了工程风险.

Relying on the communicating pipe project of Huangpujiang upstream water source,the cause for the water leakage of tunnel portal in large diameter steel pipe jacking project is analyzed,by adding a rubber plate on the water-stop steel ring of the tunnel portal and by temporarily injecting the polyurethane,the water leakage problem of the tunnel portal is solved and the project risk is controlled.