矿山泥石流成因分析及危险性评价

Analysis and Risk Assessment of Debris Flow in Shangyue Village

为研究矿山泥石流成因及沟道危险性分区,通过野外实地调查结合Massflow数值模拟,现场查明了矿山泥石流的物源、水源、沟道地形、流域DEM等特征,计算了模拟的降雨数据及其他相关参数信息后,利用Massflow、ArcGis软件,反演了矿山泥石流的运动状态,且划分了沟道危险区范围,模拟得出矿山泥石流最大泥深2.857m,最大流速5.127m/s,矿山泥石流中、高危险区占63.8%。结合目前沟道矿山泥石流发育特征及模拟结果,分析出,沟道中、高危险区域较大,应加快后续工程治理。

In order to study the causes of debris flow in Shangyue Village and the hazard zoning of the channel,field investigations were combined with Massflow numerical simulation.The source,water source,channel topography,drainage DEM and other characteristics of the debris flow were investigated on site,and the simulated rainfall data and other relevant parameter information were calculated.Using Massflow and ArcGis software,the motion state of the debris flow in Shangyue Village was inverted.In addition,the scope of the dangerous area of the channel is divided,and the simulation shows that the maximum mud depth of the debris flow is 2.857m,the maximum velocity is 5.127m/s,and the medium and high risk areas of debris flow account for 63.8%.Combined with the current development characteristics of debris flow in the channel and the simulation results,it is analyzed that the medium and high-risk areas of the channel are large,and the follow-up engineering treatment should be accelerated.