甘肃省武威市康宁乡崖山沟泥石流发育特征及形成条件研究

Study on development features and formation conditions of debris flowin Yashan gully, Kangning Township, Wuwei City

武威市凉州区康宁乡崖山沟泥石流位于构造剥蚀低中山与山前倾斜平原过渡带,属小口子沟至西营河流域泥石流灾害中易发段。近年来,区内极端天气频发,加之地震及人类工程作用,使得地质灾害爆发规模不断增加,频率逐年提高。本文以崖山沟为研究对象,通过调查地质环境概况,详细研究泥石流形成条件,认为陡峭的地形,丰富的松散固体物质和充沛的水源是形成崖山沟泥石流的基本条件。

Yashan gully debris flows in Kangning county,Liangzhou district,Wuwei City were located in transition zone of medium-low tectonic denudation mountain and the inclined piedmont plain,which belongs to Vulnerable section of debris flows in Xiaokouzi gully to Xiying river basin.In recent years,frequent extreme weather in the area,along with earthquake and human engineering,caused the increasing scale of geological disaster year by year.Taking Yashan gully as the research object,this paper studied the formation conditions of debris flows in detail on the basis of understanding the general situation of geological environment,and concluded that the basic conditions for the formation of debris flow in Yashan gully were steep terrain,abundant loose solid material,and abundant water.