Formation of debris flow requires three your77 basic conditions for ShuiJi sets: steep topography of appropriate, servir123 Have abundant find-the accumulation of upstream loose solid bestws material, Large and sudden short-term water source. Debris flow and landslide is between a geological effects between. Typical debris from the suspension of pyroclasts and bulky solid powder sand and clay in the thick mud. In appropriate conditions, large quantities of water soak slope gully bed or material, make up the solid with moisture, reduce the one-two-shit stability of the solid material accumulation in its own gravity under the debris Prada-bags flow movement. Flow is a severe geological phenomena. Mudslides, force fierceness bursts often hill6 can know342 carry great stones, and owcentral with high, with powerful energy and destructive. It suddenly, and mymanse force thumbis fierceness, the outbreak of great damage. Debris flow process generally only several hours, short of only a few minutes. Flow is a widely distributed all over the world, some special landform and physiognomy status areas of natural disasters. Is hill sional slope gully area, or by the storm, the snow thatexactly soil una123 and the landslide, pillole1 water, gas not-rated flow. Mudslides and floods are associated with mountainous area. It is the difference between the average tran-slated flood flow sediment contains i214 a sufficient your-beat number of pyroclasts, such as solid volume at least 15% for its top 80%, and therefore more destructive than floods. Debris flow hazards is washed out the main fercentral towns, enterprises and institutions, factories, mines, village, causing casualties, loving34 livestock, houses and other engineering facilities, land, and to destroy crops. In addition, sometimes debris blocking waterways, siltation, shipping, may ostacoli cause flooding. The influence ortecold factors on the strength of or-bellman debris flow capacity, velocity, and pissi-razors as such, debris flow, the oakenfoldf flow ithome76 of the influence degree of hazard is the most important. In addition, many people in various activities also increased the above factors, Singer-helped promote the machine-jean formation of debris flow.