房对沟泥石流特征及形成环境初探-水土保持通报.PDF

18 3 Vol.18 No.3 1998 6 Bulletin of Soil and Water Conservation Jun., 1998 　 张丽萍　张平仓　唐克丽 ( ··712100) 　　 　　1990 7 11 , , , , 。 , , , 。 :P642.23 :　　　　 A Study on Features and Formative Environment of Debris Flow in Fangdui Gully Zhang L ip ing 　Zhang Pingcang 　Tang Keli (Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, angling District, Shaanxi Province, 712100, PRC) Abstract　T e formative environment of debris flow is analysed by means of investigation in Fangdui gully of Wens ui county .It is considered t at Fangdui gully is a typical complex debris flow gully affected by uman actions.T ere is no clear distinction betw een areas of solid materials accumulation and passage way.At last, t e debris flow of Fangdui gully is predicted.T e conclu- sion is t at if t ere is no control engineering, t e debris flow will become more serious w en storm occurs. Keywords:Fangdui gully;formative environment;human activity;complex debris flow 。1990 7 11 , ,,, ,22 , 80 , 100 ～120 ,。 1　 1.1　 , , , 2 , 1.75 km ,2.5 km,36 %, 、,42°,35°, 300 ～ 500 m,,。 :1997-12-16　　———(961202) 　40　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 18 “”, , ,10 m, 25 ～30 m,30° 。(1) ,,