Abstract: This paper presents geological hazards evaluation results for a water diversion project. Based the systematic investigation of the geological environments for the pivot structures, the hazard evaluation utilizes the stereographic projection and quantitative scoring methods. The results indicate that the project area has a medium complicated geological conditions, and the slopes at the aprons of the main diversion tunnel as well as the construction supporting tunnel have the medium probability of geological hazards, such as, rock collapses; slope instabilities and mudflows. Approximately 82.9% of the project areas have a low geological hazard rating and are suitable for the engineering projects. The mitigation approaches for the potential geological hazards are also proposed.

Key words: Water Diversion Project, Geological Hazards, Risk Assessment, Mitigation Measures