Analysis of Surface Failure of Slopes using Slope Deformation Monitoring System Based on Inclinometers with LPWA

摘要

In Japan,frequently sediment-related disasters have occurred such as typhoons,torrential rain,landslide,earthquakes,flood,debris flow,etc.To prevent the damage caused by the sediment-related disaster,it is necessary to establish a monitoring system of slope deformation.The system which has been conventionally used,have been using a wired cable to the power supply and data transmission to the equipment.However,the issues of this system are difficult to perform maintenance and monitoring.In this research,the purpose is to develop a slope deformation monitoring system using LPWA(Low Power Wide Area)that can reduce the cost and construction period.It is essential to construct a system that combines wireless technology and inclinometers that can measures movement of slopes and send the information through wireless communication.The data from Inclinometers are collected through the LPWA system.The radio wave propagation has been evaluated around the site.During collecting data from the system,site investigation and experiment has also been conducted to analyze the slope stability.It has been confirmed that the slope monitoring system could detect the slope failure during torrential rain.In the future,developing a monitoring system using LPWA is not only for slope deformation but also in any specific areas such as rock movement,the water level at dam areas,etc.