Abstract:Structural planes often control the stability of rock slope directly, so how to obtain, analyze and use the information of structural planes is very important. Taking Longsi CIV-1 slope as an example, the structural planes are analyzed and studied from data collection, analysis, spatial distribution model, structural characteristics and other aspects, and the distribution, attitude and spatial combination of the controlling structural planes are obtained. Based on this, the failure modes of dangerous rock body are preliminarily judged, and then the stability of dangerous rock body with different failure modes is analyzed by using limit equilibrium theory and UDEC software respectively. The results show that the influence degree of each working condition on slope stability is as follows: Combined condition ＞ rainstorm condition ＞ earthquake condition, and the results of theoretical calculation and numerical analysis verify the preliminary judgment of the stability of dangerous rock body by using the spatial combination relation of structural plane;Finally, the reinforcement and optimization scheme of dividing slope structure area based on the characteristics of the structural plane is proposed, which provides some reference for similar engineering treatment in the future.
