Advanced technologies for landslide monitoring

Abstract

The article reviews modern landslide monitoring methods. The purpose of the observation method in the design and control of the behavior of geotechnical structures and its role in creating chances for cost savings or pre-emptively averting construction risks is a driving force in the context of landslides. This approach is established within Eurocode 7 as a fundamental tenet of geotechnical design, serving as a valid validation method for limit states. Monitoring of large areas is common in everyday engineering practice which makes the installation of transducers in multiple points very difficult. Due to this reason the use of so-called contactless approaches is widely accepted. A distinguishable representor of that method is DInSAR – technique for successful displacements measurement by means of SAR data which is economically feasible and capable of detecting classic failure modes. The article presents and compares methods such as: LiDAR, Infrared sensors, Fiber oprics, Shape array accelerometers, In-place inclinometers, and others. Despite the development of technologies, the application of monitoring in Bulgaria is not enough used.