Stability Evaluation And Treatment Study On High Slope Of Panmei

The paper study the high slope of PanMei,discussing the mechanism of deformation failure and the stability of the high slope of PanMei.It is concluded that falling is the major hazard of this high slope.On the basis of above results,it is suggested that slope cut should be used as its treatment mrasures. The stability of the cutted high slope is analysed under different situations.The presterssed anchor cable frame combined with backwall, drainage is necessary due to longtime sability and permanent utilization.Firstly,according the study of engineering of geology situation of the high slope, the mechanism of deformation failure and the major hazard of the high slope of PanMei is analysed comprehensively.And the whole slope is divided into two different geology enginnering areas:Western slope(1160 section plane -1240 section plane)and Eastern slope(1240 section plane -1320 section plane). The result of 3D numerical simulation is the same as geology judgement. Later,slope cut (1:0.75) is implemented based on the engineering comparison and criterion.Meanwhile, Limit equilibrium method , Monte Carlo Probabilistic slope stability the stability , Sensitivity analysis and Finent element method of for assessing the cutted slope stability is carried out. The result indicates that Western slope is instable, Eastern slope is relatively stable.So much attention should be paid to Western slope.Different reinforcement measures in different areas are given according to its stability and meet economical request. Gravity wall is introduced in accordance with landform in order to prevent small falling at the foot of the high slope ,which will be a threat to the high slope stability. Handling measure is also applied to Eastern slope. At last,FLAC3D numerical analysis shows the feasibility and reasonableness of the handling measure of the high slope.From above all, thorough study of engineering of geology on the high slope and much more consideration to the handling measure,with different methods of evaluating slope stability ,will insure the longtime stability of the stability of high slope of PanMei under working order and the worst situation.