A Pilot Construction of a Real-Time Monitoring System for Slow-Moving Landslide, Republic of Korea

Dongyeob KIM, Changwoo LEE, Choongshik WOO, Junpyo SEO, Minjeng KANG, Kidae KIM, Man-Il KIM and Jaehyeon PARK

The objective of this paper was to introduce a recent case of slowing-moving landslide in Republic of Korea, and discuss utility of a monitoring system for the landslide as a preventive measure. The study site was a 2.6 ha slow-moving landslide area situated in the Southern part of Korean Peninsula. Preliminarily, eight-month-temporary monitoring with fixed stakes was conducted, and its result indicated the moderate probability of landslide movement despite of measurement error. Moreover, following detailed site investigation support the landslide progress with the results of underground tests. Considering results of the preliminary monitoring and investigation with an expense of restoration work, a real-time and sensor-based monitoring system using the ubiquitous sensor network technique was finally introduced to the study site. The system was designed to provide emergency measures by real-time monitoring for the slow-moving landslide. The results of its three-month operations showed that the landslide appeared to enter a stable phase, but the system had high missing rate of sensors more or less. Consequently, the monitoring system could be cost-effective measure compared to restoration work, but it still requires improved hardware performance such as lower data missing rate.

2018/1 321-326