广西玉林某坡面泥石流发育条件及形成机理研究

Research on the Development Conditions and Formation Mechanism of a Slope Debris Flow in Yulin, Guangxi

文章以广西玉林某地“6·9”特大暴雨引发的某坡面泥石流为例,通过地面调查查明其发育条件,分析该泥石流所处的气象、水文、地层岩性、工程地质条件、水文地质条件、地质构造、人类工程活动等地质环境条件,研究泥石流在降雨等各种因素下的形成机理,特别是花岗岩地区浅层坡面泥石流的形成机制,进而提出监测、疏通排堵、加强地灾宣传等防治措施建议。所得结论准确可靠,对于此类坡面泥石流的防治具有一定的指导意义。

This paper takes a slope debris flow caused by “6·9” torrential rain in Yulin, Guangxi as an example.Through ground investigation, the development conditions of the slope debris flow are found out, and the meteorological,hydrological, stratigraphic lithology, engineering geological conditions, hydrogeological conditions, geological structure,human engineering activities and other geological environment conditions of the slope debris flow are analyzed. The formation mechanism of debris flow under various factors such as rainfall, especially the formation mechanism of shallow slope debris flow in granite area, is studied, and then the prevention and control measures such as monitoring, dredging, and strengthening the publicity of geological disasters are put forward. The conclusion is accurate and reliable, which has certain guiding significance for the prevention and control of such slope debris flow.