Research On Trigger Conditions Of Debris Flow Of Waste Dump In Sanyou Mine

Debris flow is one of the common geological disasters in mountain areas, since it has highspeed, proruption, the great destructive power, often caused huge threat to life and economic losses in activity region, also destroyed the surrounding ecological environment. Mine waste dunp debris flow is artificial debris flow caused by the discharge of waste rock, waste soil around the mine during the development of mineral resources in mountain area. Besides it has the characteristics of debris flow, other characteristics including packing speed, emission concentration and so on. Determined by the mine exploitation intensity and dump scale, the scale of debris flow will cause significant loss of life and property on the mining area and its surrounding areas.Through the exploration of the formation lithology, geological structure,hydrogeological condition of Sanyou mine waste dump, we can learn its physical and mechanical properties, combined with Geostudio software to analyze the stability of mine slope. With the combination of SEEP/W module and SLOPE/W module, we can analyze the change of Sanyou mine waste dump slope stability under the condition of rainfall.With the combination of QUAKE/W module and SLOPE/W module, we can analyze the change of Sanyou mine waste dump slope stability under the condition of earthquake.Through the combination of the three modules above, we can analyze the stability of Sanyou mine waste dump slope under the coupling action of rainfall and erathquake.Thus we can work out the law that the stability of waste dump slope changes with the rainfall intensity, rainfall duration and seismic intensity. By analyzing the influence factors and general rule of mine debris flow, it provides theoretical basis for the prevention of Sanyou mine debris flow.