Study on the Stability Evaluation Index System for Rock Slope–Anchoring Systems

The stability of rock slope–anchoring systems is one of the core concerns in protecting the ecological environment and ensuring the safe operation of hydropower, transportation, and construction projects. The stability evaluation index system is a critical factor influencing the accuracy of such assessments. This study establishes a stability evaluation index system for rock slope–anchoring systems by incorporating multi-factor influence mechanisms. The approach involves indicator screening, development of a hierarchical analytical structure, definition of classification criteria, and comparative analysis. The results indicate the following: (1) The proposed index system fully considers the deformation and failure modes of rock slopes, the factors influencing stability, and the safety-related parameters of anchoring structures. (2) It comprehensively captures the multi-factor influence patterns affecting the stability of the rock slope–anchoring system. (3) Compared with traditional empirical and equal-interval grading methods, the grading standards defined by this system are more accurate, better reflect the intrinsic data characteristics, and yield higher classification precision.