Study On Formation Mechanism And Control Technology Of Slope Debris Flow In Sedimentary Rock Area Of Nandan Conty

Nandan county stratum distribution is mainly sedimentary rock,debris slide accounts for about 9.58%of the total geological disasters in the county,including slope debris slide accounted for 64%,the slope debris slide is difficult to identify the general gully debris slide,slope debris slide often accompanied by collapse,landslide,and other adverse geological effects,so in the early stage of the disaster,often misjudged,leakage phenomenon,resulting in disaster management measures unreasonable,not thorough,resulting in more serious secondary disasters.This paper analyzes the development characteristics of debris flow in sedimentary rock area from formation,accumulation,distribution and the development characteristics of general slope rock flow,summarizes the formation process of the slope debris flow and proposes the field discrimination method of the slope debris flow and obtains the following conclusions:(1)By analyzing the development characteristics of general debris flow and sedimentary rock area,and analyzing the development characteristics of formation,accumulation and distribution,establishing the scale division standard for slope debris flow less than 1×10~4m~3,10~4m~3,<0.1×10~4m~3is small A,0.1×10~4m~3?0.5×10~4m~3is small B,0.5×10~4m~3?1.0×10~4m~3is small C;(2)By analyzing the development characteristics of slope debris flow in the sedimentary rock area,the main features,including slope form,slope,geoproperty and bad geological phenomena..(3)From the external dynamics of soil erosion process,the slope of sedimentary rock area and the quantitative calculation study,then derived the dynamic formula of viscous soil through unit analysis,summarized the formula from the whole and individual rocks.(4)Based on the treatment principles and technology of general debris flow,based on the characteristics of sedimentary rock area,the geotechnical engineering and biological engineering,and the storage capacity calculation,dam load,gravity block structure calculation and hydraulic calculation,and the treatment of slope debris flow.