Analysis Of The Stability Of The Slope Of The Outlet Section Of Spillway Tunnel Of Luding Hydropower Station

With the construction of Hydropower station ,it is more liable to occur slope stability problems these years, so the stability analysis and geologic tragedy treatment for the high slope turn into the key part of engineering safety .At the same time , it took a controlling act on the feasibility ,security and economy of the whole engineering construction. Further studying the action factors of the slope's displacement and analyzing its stability , both have important value ,not only in theory but also in actual use for slope design and its treatment.In this paper .Taking the stability of the high slope of the outlet section of spillway tunnel of lunding hydropower station as research target ,the action mechanism of the rock slope influence factors are summed up and summarized .In order to study the influence degrees which main influence factors impose on the slope, this paper computed slope safety with the EMU software, the sensitivity of main influence factors about rock slope is researched in this paper , the main factors' influence levels are computed and analyzed ,the relativity between slope safety factor and every sensitivity factor are researched ,and the regression equations are set up . It supplies the theoretical basis for how to confirm stability of part of slope. This will offer some guidance for the practical engineering ,and we analysis the slope with FLAC numerical simulate. A fuzzy comprehensive assessment method is used to estimate the slope stability of luding hydropower station , the results indicated that the slopes of the section are basically stable .The result of the research is reconciled with EMU method and F1AC method , practically in principle ,which shows that the method is feasible and makes the results accord with the fact much more, and it can be extended to the slope stability study with resemble condition.