Research on Disaster Mechanism of Mud-water Gushing and Measures in Xinping Tunnel of Yuxi-Mohan Railway
In order to find out the disaster-causing mechanism such as mud inrush and water inrush in Xinping Tunnel of Yuxi-Mohan Railway,combined with the disaster characteristics of the tunnel site,based on factors such as topography,stratum lithology,geological structure,hydrogeology,climatic conditions and construction factors,the disaster-causing mechanism of inrush was discussed,and the disaster-causing types of tunnel inrush were summarized,and the corresponding disaster prevention and control measures were put forward.The soft rock tunnel has low strength and large deformation.The factors such as the mismatch between the design surrounding rock level and the revelation are very important to the breeding of the tunnel disaster.The special tectonic environment and groundwater promote the occurrence of the disaster.According to the causes of disaster,the disaster types of the tunnel are divided into three types:structure-lithology-rich water-construction measures,structure-lithology-weak water-construction measures,lithology-rich water-construction measures,and the corresponding prevention and control measures are put forward.In the construction process,it is necessary to clarify several types of factors that may cause disasters,strengthen advanced geological prediction,monitoring and measurement,excavation and revealing comparison,control the development and scale of disaster sources,dynamically adjust the types of tunnel disasters,and take targeted prevention and control measures to ensure the safety of tunnel construction.
tunnelsrailwaysmud-water gushingdisaster-causing mechanismdisaster typedisaster prevention and control
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