Abstract: Unpredicted rock falling has always been an important threat affecting the safety of adjacent residents. At present, the analysis of the trajectory of rock falling is mainly a combination of empirical formulas and kinematic analysis methods. The empirical formula has major limitations. Therefore, in the analysis of Wanan Street rock fall potential, the inversion method is used to estimate the friction coefficient of the rock slope, and at the same time, the trajectory formula of the falling rock during the rebound and oblique throwing process is summarized. Throughout the use of existing kinematics formulas and induction formulas, combined with the topographical characteristics of rock slopes with rock falling potentials in Wanan Street area, the trajectory of rock fall is analyzed, the track of rockfall pattern is described in the paper. Rockfall mitigation and prevention suggestions are also proposed in the paper.

Key words: hazards of rock, rock falls, trajectory of falling rock ,