The application provides an anisotropic rock
mass evaluation method and
system based on a directional structure index, and belongs to the technical field of geological
engineering, and comprises the following steps: obtaining internal
strength factor data, structure
strength factor data and boundary
condition factor data of a rock
mass to be evaluated; calculating internal
strength factor rating Ri; constructing a directional weight function W(θ); calculating structure surface comprehensive condition rating Jc, and directionally correcting the rock quality designation RQD value of a
drill hole to obtain a directional structure strength index DSSI(θ) through
coupling calculation; calculating boundary
condition factor rating Bc; calculating a directional rock
mass quality comprehensive index D-RMR(θ) and calibrating the original value of D-RMR(θ); generating a visual representation map by taking the calibrated D-RMR(θ) value corresponding to different direction angles θ; and evaluating the quality grade of the rock mass to be evaluated. The application can accurately and quantitatively reveal the directional characteristics of anisotropic rock mass, effectively avoid
distortion of key parameters, and has the advantages of high accuracy, strong practicability and intuitive results.