【摘要】 根据杭州地质条件,结合盾构施工工艺,系统地分析了杭州地铁盾构区间施工过程中主要的地质风险源,得出了对杭州地铁建设影响较小的风险源的种类有区域断裂构造、特殊岩层、地下障碍物(抛石);较大的风险源主要有特殊土层、不利复合地质、有害气体和地下障碍物(已有桩基),并提出了防范措施。更多还原

【Abstract】 According to geological conditions in Hangzhou,combined with the shield construction technology,systemically analyzes the major geological risk source proceeding from construction process of metro shield section in Hangzhou,it comes to a conclusion that risk-sources which have small influences on metro construction in Hangzhou include regional fracture structure,Special Strata,underground obstruction(riprap);while what have large influences mainly include special soil,unfavorable complex geological structure,harmful gases and underground obstruction(existing pile).Then the author proposes some protective measures.更多还原