Analysis of Slope Failure Behaviour Based on Real-Time Measurement Using the x–MR Method

• Main Authors: Sungyong Park, Hyuntaek Lim, Bibek Tamang, Jihuan Jin, Seungjoo Lee, Sukhyun Chang, Yongseong Kim
• Format: Article
• Language: English
• Published: MDPI AG 2019-10-01
• Series: Journal of Marine Science and Engineering
• Subjects: displacement sensor; slope failure; early warning system; slope instrumentation standard; slope failure prediction; x-mr control chart
• Online Access: https://www.mdpi.com/2077-1312/7/10/360

A real-scale slope failure model experiment is performed to analyze the movement behavior of the slope during failure, and the results are analyzed through the x−MR control chart method, along with inverse displacement and various analysis sections such as K-values. As a result, the portent of failure can be identified to be about 7.7−18.3 min prior to the final slope failure. As a result of the analyses of changes in the control limit in the various analyses sections, it is considered that the application of K = 3 to the x-MR control chart is effective. It is observed that using the x-MR control chart technique of the inverse displacement is useful for the early prediction of the anomalous behavior of a slope, through a more quick and objective judgment. Henceforth, it is necessary to establish clear techniques for prediction and analyses of slope failure through continuous research, and those results can be used as the basic data of a slope instrumentation management standard that can contribute to the mitigation of life and property damage caused by slope failure hazards.