上海地区某大口径矩形顶管施工周边环境影响监测分析

摘要

顶管技术作为非开挖的技术中的一种，可以在不用开挖地表土的情况下将管道铺设完毕，具有其他开挖方式无可比拟的优点，其应用也越来越广泛。但是在顶管施工中，不可避免地会破坏管道周围土体原有的平衡，造成地面的沉降，对周边环境造成影响。相对于圆形顶管，矩形顶管对周围土体的扰动更大，从而引起的地面变形也更大。本文以上海市徐汇区某地下通道矩形顶管工程为背景，通过现场监测数据分析，得出了一些有益的结论。%As one of Trench less Technology ,Pipe jacking has the unparalleled advantage of finishing pipeline laying without excavating surface soil ,and has become widely used .However ,pipe jacking will inevitably break the original soil balance around the pipe ,leading to land subsidence and affect buildings surrounded ,even endangers their safety .Rela-tive to circular pipe jacking ,rectangular pipe jacking construction may disturb the soil more heavily and cause more sur-face deformation.This thesis based on the rectangular pipe jacking construction project of Shanghai Xuhui District under -ground passage .Through on-site monitoring data analysis ,some useful conclusions are obtained .