隧道突水突泥致灾构造识别方法及其工程应用

Identification Method of Water and Mud Inrush Hazard-Causing Structures in Tunnel and Its Application

为有效识别隧道突水突泥致灾构造,基于致灾构造的地质特征、地球物理响应特征和钻探揭露特征,提出了一种集地质识别、物探识别、钻探识别为一体的隧道突水突泥致灾构造综合识别方法,阐述了其实施流程和实施原则.地质识别提供先验信息,指导物探的实施和解译,物探指导钻探施工,地质、物探、钻探有机结合与相互印证,识别过程动态反馈.给出了断层和岩溶突水突泥致灾构造的发育规律、地质特征和突水突泥灾害前兆地质信息,不同物探方法下的地球物理响应特征及钻探揭露特征,指导隧道施工过程中致灾构造的识别.利万高速齐岳山隧道实践证明,该方法可有效识别致灾构造的空间位置分布特征,可为同类工程隧道突水突泥致灾构造的识别提供参考和借鉴.

To identify water and mud inrush hazard-causing structures in tunnel effectively,an identification method combining the geological identification,geophysical prospecting and drilling was put forward based on the characteristics of geology,geophysics and revealed by drilling.The implementation process and principles of the method were proposed.Geological identification could provide water and mud inrush prior information,which could guide the implementation and interpretation of geophysical exploration.Geophysical exploration could guide drilling construction.The method was an organic combination of geological identification,geophysical exploration and drilling,which could verify and provide dynamic feedback to each other.Development regularity,distribution characteristics and precursory geological information of fault and karst hazard-causing structures were summarized and analyzed.Geophysical response characteristics under different geophysical exploration methods and revealed characteristics by drilling were provided.The characteristics could provide guidance for hazard-causing structures identification.The practice in Qiyueshan tunnel of Lichuan-Wanzhou expressway has proved that,the method can effectively identify the space distribution characteristics of hazard-causing structures,which can provide references to the tunnel water and mud inrush hazard-causing structures identification in similar engineering.