FACTOR OF SAFETY ANALYSIS OF BEDDING ROCK SLOPE UNDER SEISMIC LOAD
地震荷载作用下顺层岩质边坡安全系数分析

Based on the strength reduction method,a new method to determine the factor of safety of bedding rock slope under seismic load is proposed.The equilibrium condition is estimated based on the trend of the key points' displacements or velocities.The slide surface is also determined by the velocity or displacement vectors of the unstable condition.Based on the new method,the factor of safety of Zhongjiawan bedding slope is calculated by UDEC and compared with the results obtained by limit equilibrium method(LEM).It is revealed that the value calculated by UDEC is close to that by LEM,which indicates that the new method is feasible and reasonable.The influences of height and angle of bedding slope,inclination of interface as well as seismic parameters including amplitudes and frequency on the factor of safety of bedding rock slope under seismic load are analyzed.