PROBABILISTIC STABILITY ANALYSIS METHOD OF SLOPES USING TERRESTRIAL LIDAR

摘要

PURPOSE: A statistical rock slope stability analysis method is provided to improve the reliability of the interpretation result by excluding subjective error using quantitive conversion technique in JRC(Joint Roughness Coefficient) determination and statistical parameter. CONSTITUTION: A geometric condition of the surface and profile of the discontinuity surface are calculated from point group data about the terrestrial LiDAR(Light Detection And Raging)(S20). The quantitive JRC is calculated using the discontinuity surface profile(S40). The JCS(Joint Compressive Strength) is calculated using the SHV(Schmidt Hammer Value) about the discontinuity surface(S50). The PDF(Probability Density Function) and CDF(Cumulative Density Function) are obtained using JCS and JRC as the random variable. The damage probability is calculated from the probability value of the unsafe region boundary(S60).