Risk Assessment And Treatment Of Da Ling Gong Shan Landslide

Landslide is a common and sudden geological hazard,mainly manifested as slope rock and soil slide along the shear failure surface.Landslide is destructive.It often causes huge losses and even devastating disasters for people's production and life and property.Landslide risk analysis and landslide hazard control are difficult and hot topics in the field of disaster prevention and mitigation.Under the current economic level,it is impossible and unnecessary to treat all potential geological disasters.The regulations on prevention and control of geological disasters clearly define the principle of prevention and control of geological disasters as "prevention first,avoidance and management combined" and "comprehensive planning and key points".Therefore,correctly assessing the risk of landslides and formulating reasonable and feasible treatment plans should be taken as the basic decision-making basis for landslide control.In this paper,the geological environment of the Darling Mountain in DongGuan is studied.Through the investigation of the geological environment in the landslide area and the characteristics of the landslides in the Darling Mountain,the factors and causes of the landslide are analyzed and summed up.Based on the Monte Carlo method,the Felenius method and the simplified Bishop Calculation model are constructed respectively.Slope risk assessment study,the most dangerous failure surface of slope and sliding segment is not a technical assessment of overall stability,to form a technical method of landslide disaster control arc destruction of slope geological environment in Guangdong area,proved by practice,the management technology research method is feasible.The specific content is divided into the following aspects:(1)Analysis of the engineering geological conditions of high ridge male mountain landslide,which influences the stability of engineering properties of soil,topography,slope,meteorological factors and human engineering activities on landslide.It is determined that the slope is generally a soil slope,and the safety grade of the slope is grade one.(2)Based on the Monte Carlo method,the Felenius method and simplified Bishop Method are constructed respectively under conditions 1 and 2.(3)The landslide slope of Darling Mountain is divided into 9 sections,and the maximum residual sliding force of each section of slope body is calculated by using the software of rational geotechnical soil.It is determined that the most dangerous failure surface in the landslide body of the Darling mountain is 9--9',and the calculation is at the self weight groundwater(the condition of the general rainy season)and the heavy rain and the groundwater(continuous rainstorm).Unfavorable conditions)calculation stability under the two working conditions,get the stability coefficient of slope in two different conditions,determine the 2-2' and 3-3' section belongs to the slope are in a less stable,safe storage is small and the necessary governance.(4)According to the characteristics of landslide and hazard analysis results,combined with the Kung Ling mountain landslide features to design a "anti sliding wall & anchor anti slide piles and piles of anti-sliding retaining wall retaining structure & drainage system" project.