Risk Assessment and Prevention Measures for Geological Hazards along the Lhasa–Qu Shui Bridge Section of National Highway 318
Hanyu Wang
Sichuan Mineral Mechanical and Electrical Technician College, Chengdu, Sichuan 611200, China
Abstract: This study focuses on the road surface treatment project of the Lhasa–Qu Shui Bridge section of National Highway 318. Based on the geological hazard risk assessment report for construction land and referencing research literature on geological hazards in Sichuan–Tibet Highway and power transmission projects, an assessment model suitable fo high-altitude complex geological conditions is established. Using the fuzzy comprehensive evaluation method and analytic hierarchy process (AHP), hazard zoning for unstable rock masses, debris flows, and other disasters is conducted, and targeted prevention measures are proposed. The results indicate that the distribution of 9 medium-risk (Zone II) and 9 low-risk (Zone III) segments is closely related to stratigraphic lithology and terrain slope. It is recommended to enhance monitoring, early warning systems, and engineering protection measures during construction.
Keywords : National Highway 318; geological hazards; risk assessment; analytic hierarchy process (AHP); fuzzy comprehensive evaluation metho
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