地铁隧道全断面砂层土压盾构超近距离侧穿建筑物施工技术研究

Research on Construction Technology of EPB Passing through Buildings with Super Short-distance in Full Section Sand Layer

地铁隧道盾构施工运用土压平衡满仓掘进工艺,克服全断面砂层地质中盾构掘进对地层扰动大的难题。通过提前筹划,优化措施,精细管理,动态调整,在全断面砂层地质中以微小沉降近距离安全顺利侧穿3栋年代久远、结构薄弱建筑物。总结的施工技术经验,为以后类似边界条件下盾构隧道施工提供了良好借鉴。

Using earth pressure balance model to overcome the problem of ground disturbance induced by shield tunneling in full section sand layer. Through advance planning,optimize measure,fine management,dynamic adjustment,the EPB traversing adjacently three old buildings of weak structure with small settlement in full section sand layer. The summary of experience in construction technology provides a good reference for the shield tunnel construction under the similar boundary conditions in the future