A4 Landslide risk management for mountain roads
When the design, construction and maintenance of mountain roads are required to accommodate landslides and difficult ground conditions, decisions need to be made based on the assessment of risk. Risk management requires a balance to be struck between acceptable risk of blockage, damage or loss and affordable cost of risk reduction. However, before these decisions can be made, an assessment of landslide susceptibility and hazard is usually required.
Figures & Tables
Slope Engineering for Mountain Roads
This book provides a complete guide to the study, design, construction and management of landslide and slope engineering measures for mountain roads, with an emphasis on low-cost. The geographical focus of the book is on the tropics and sub-tropics, but is also highly relevant to other regions where heavy rain, steep slopes and weak soils and rocks combine to create slope instability. The causes and mechanisms of landslides are described, and the hazards they pose to mountain roads are illustrated. Methods of desk study, field mapping and ground investigation are reviewed and illustrated, with an emphasis on geomorphological and engineering geological techniques. The design and construction of alignments, earthworks, drainage, retaining structures, the stabilization of soil slopes and rock slopes, and the control of erosion on slopes and in rivers and streams are covered. Slope management as part of road maintenance and operation is reviewed, and procedures for risk assessment and works prioritization are described.