北京地铁盾构施工遇到的工程地质问题

ENCOUNTERED ENGINEERING GEOLOGICAL PROBLEMS OF SHIELD TUNNELING IN BEIJING SUBWAY CONSTRUCTION

摘要: 近年来,盾构法施工广泛地应用于北京地铁建设中。然而,由于北京地区地质条件复杂,面临许多工程地质问题。本文在分析总结北京地区工程地质、水文地质条件以及盾构施工特点的基础上,讨论了盾构施工所遇到的工程地质问题,探讨盾构施工与工程地质条件之间的关系,为复杂地质条件下的盾构施工提供参考。

Abstract: At present,Tunneling Boring Machines(TBMs)are extensively used to meet the demands for excavation of urban tunnels in Beijing,but many engineering problems were encountered during tunneling because of geological complexity.In this paper,based on the characteristics of the engineering geology and TBM excavations,the engineering geological problems in Beijing were discussed,and the relations between shield TBM excavations and the characteristics of the engineering geology were analyzed,from which TBM excavations should be better understood.