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FEATURES OF FLOOD-DITCH MUD-ROCK FLOW AND THE DESIGN OF PREVENTIVE AND TREATMENT WORKS IN THE EARTHQUAKE-HIT AREA OF AN COUNTY,SICHUAN

CHU Chang-fu,HU Ling(No.321 Geological Team of Bureau of Geology and Mineral Exploration of Anhui Province,Tongling,Anhui 244033)  
The Sichuan "5.12"great earthquake seriously damaged local geological environment and brought about many places of geological hazards.This paper analyzed formation mechanism,distribution,natures and features of flood-ditch mud-rock flows in the earthquake-hit areas,measured and estimated reserve of solid material source,made a calculation in detail of nature parameter of mud-rock flow,conducted design calculation for rpeventive and treatment works,and finally put forward the key points in design based on example works and experience.
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