模糊层次综合评估法在隧道断层破碎带塌方风险评估上的应用

针对绵竹至茂县公路云湖1号隧道F29断层破碎带,选取围岩级别、开挖宽度、地下水、不良地质、施工单位技术和管理水平等5个对塌方影响较大的因素,运用模糊层次综合评估法对该不良地质段进行了塌方风险分析,确定了云湖1号隧道F29断层破碎带发生塌方的风险等级,有助于指导设计与施工采取合理措施确保隧道安全。该方法在隧道工程建设中具有一定的实用价值,可为以后类似的隧道工程进行风险评估提供参考。

Application of Fuzzy AHP Comprehensive Evaluation Method on Risk Assessment of Tunnel Collapse in Fault Fracture Zone

Tunnel collapse was very common in tunnel construction. In this paper,five major factors including rock classification,excavation width,groundwater,unfavorable geology,construction technology and management level which having larger impact on tunnel collapse were chosen and fuzzy AHP comprehensive evaluation method were used to analyze tunnel collapse risk in F29 fault fracture zone of Yunhu NO. 1 Tunnel. Finally,Risk level of tunnel collapse in F29 fault fracture zone was got and it could help to guide the design and construction to take reasonable measures to ensure the safety of the tunnel. This method had certain practical value in tunnel construction and it could provide reference for risk assessment of the similar pro- jects in future.