隧洞突水突泥次生灾害诱因与防治技术

Inducement and prevention technology of secondary disasters of water and mud inrush in tunnel

为探究地下工程突水突泥次生灾害主要影响因素以及控制方法,通过总结2010年以来有关案例,总结孕灾环境与致灾因子,提出突水突泥次生灾害预防与控制技术。以滇中引水狮子山隧洞穿越F_(Ⅲ-71)断层二次突水突泥为例,探明该地质段灾害成因,将次生灾害演变过程分为3个阶段:孕育阶段、潜存阶段和诱发阶段;提出改善外部环境的状态、阻断灾变演化路径、提高防突层承受能力的方法防止突水突泥再次发生,为隧洞突水突泥次生灾害处置提供经验指导。

In order to explore the main influencing factors and control methods of secondary disasters of water and mud inrush in underground engineering,the prevention and control technology of secondary disasters of water and mud inrush was proposed by summarizing relevant cases since 2010 and the disaster-inducing environment and factors were summarized.Taking the secondary water and mud inrush of Shizishan Tunnel crossing F_(Ⅲ-71)fault in central Yunnan as an example,the causes of disasters in this geological section were explored,and the evolution process of secondary disasters was divided into three stages:gestation stage,latent stage and induction stage.The methods of improving the state of the external environment,blocking the evolution path of the disaster and increasing the bearing capacity of the anti-outburst layer were put forward to prevent the recurrence of water outburst and mud outburst,which provided experience guidance for the treatment of the secondary disaster of water outburst and mud outburst.