The Mud Mechanism And Disposal Study Of Mud Inrush In Katst Tunnel

With construction of the infrastructure in our country, more and more tunnels are constructed in karst area. However, the problem of geological disasters is getting worse and worse increasingly and the safety would be affected greatly by these disasters during the construction. The mud-inrush is one type of these typical disasters. How to refrain from this calamity has been a significant technological challenge that is urgently needed to be resolved at the construction time in karst area.At the base of consulting the predecessors' literatures and lots of practices, this paper sums up the mechanism and treatment of mud-inrush in karst area. By combining with the practical program named Guanxi tunnel of Liuyi highway in Guangxi zhuang autonomous region, it makes a research on the mud-inrush. The main works are as follows:(1) Makes a detailed description on the regularity of mud-inrush and the reason for the development of karst;(2) Makes an analyses on the mechanism of mud-inrush with a method of mechanics;(3) Makes a research on the treatment of mud-inrush and sums up means of emergency, prevention and the treatment;(4) Provides the reason for the development of mud-inrush and the treatment according to practical program. Makes a Numerical Simulation on the reason for mud-inrush and the effect of synthetic treatment with FLAC3D, and rises "the treatment of mud-inrush" to the theory height. To some degree, the research has guiding and reference significance to the acquaintance of mechanism, the emergency and the treatment of mud-inrush.