Quick Review of the Approaches of Landslide Risk Assessment

Landslide prevention and mitigation have a long history. Retaining walls and ground anchors are popular methods for preventing slope failure, as these prevention methods increase the factor of safety against failure. These methods are widely utilised and proven to be effective all around the world. The methods are however very costly, leading to a restricted application only for wide slopes. A landslide early warning system (LEWS) with real-time monitoring system is required to identify appropriate moment for preventive measures in order to handle landslide emergencies. However, depending on the type of landslide, different techniques are required. The approach is frequently used to help determine a set of crucial thresholds that can be used to determine when alerts can be sent, and it is based on LEWS’ own theoretical basis. This paper presents a quick review on the three general approaches used in LEWS, namely statistical approach, physical-based approach and monitoring-based approach. This quick review will attempt in discovering more on the strengths and advantages rather than diving into the limitations of each approach.