| Chipu gully is a branch of the Niuri river,tributaries of Dadu River. It is a main ballast by artificial mining debris of formation. The thesis estimate it's risk comprehensively according to its field investigation in detail, artificial mining cinder may caust debis conditions as its main line. Study contents and consclusions anquired in this thesis are mainly included an follows:(1)The full details of the investigation of the landform condition. The emphasis of the study are the landform, formation lithology, geologic setting and earthquake, hydrogeology,unfavorable geology,special geology,meteorological and hydrological conditions.(2) Analysis of the Chipu gully debris formation conditions. Through the study of landform,rainfall, loose material conditions,it can judge these conditions does constitute the debis fotmation conditions.(3)Calculation,analysis of debis flow characteristics.Calculate peak discharge,flow rate,total quantity of the debis flow,duration,superelevation of the curve,the maximum drop height,impact force,energy,occurrence on the downpour condition,etc.(4)Evalute the risk of Chipu debris flow by general assessment model and Liu Xilin evaluation model and selecting the appropriate danger factor.And obtain the Highly danger of the debris flow by the way of verifying each other from above two estimated results.(5)Analysis of the dangers of Chi Pu debris flow on the Chengdu-Kunming Railway, Lead Hill and 108 federal highway.(6) Proposes improvement measure of Chi Pu debris flow in the above analysis's foundation and carries on the mine debris flow risk management reasearch.
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