西和县泥石流发育史与环境初探  

Preliminary reseatch on the development history and environment of debris flows in Xihe county of Gansu Province

作　　者：赵尚学[1] 张正强 

机构地区：[1]中国科学院兰州冰川冻土研究所 [2]甘肃省西和县水土保持科学试验站

出　　处：《水土保持通报》1989年第6期27-35,共9页Bulletin of Soil and Water Conservation

摘　　要：本文依据泥石流发育历史、地质地貌及降水等条件,对西和县泥石流的分布、成因以及发展趋势等进行了初步分析。分析认为,本县泥石流沿构造带、随岩性变化和人为破坏植被的地区分布。由此推断了泥石流的成因,探讨了泥石流形成与地形、固体物质储量、水源及新构造作用的关系,并得出本县泥石流发展的趋势将进入壮大阶段并日趋严重。Accoding to the debris flow development history, geological, geo-morphical and precipitation conditions,this experiment initially analysesthe distribution, cause and developing tendency of debris flows in Xihecounty. It is considered that the debris flows of this county distributesalong with structural beld with the changes of rock character and artificial destruction of vegetatin. Relying on these,the authors deduce the cau-ses of debris flows and discuss the forming of debris flows with relation totopography, the storage of solid materials, water supplies and new tectonicmovement. It at last draw the conclusion that the debris flows tend ofthis county will come into an expanding stage and become serious soon.

关 键 词：西和县 泥石流 发育史 环境 

分 类 号：P642.23[天文地球—工程地质学]