A novel technique for monitoring deep displacement and early-warning of landslide

In order to present an investigation into a novel technique for monitoring deep displacement and early-prediction method of landslide, the processes of the novel technology of SAA (shape acceleration array) and conventional monitoring method used to collect deep displacement of a certain landslide located in plateau mountain area were introduced. A method for calculating kinetic energy of monitoring bore was proposed. The change laws of deformation rate, acceleration as well as kinetic energy and its rate from beginning deformation to global sliding failure were analyzed and studied systematically. The early-warning method for critical landslide sliding based on kinetic energy and its rate was proposed. The results demonstrate that shape acceleration array offers a number of advantages including wide range, high stability, easy to implement remote monitoring and so on. The relationship characteristic curves of kinetic energy and its rate can be used to distinguish different stages of landslide and to predict limit time in the deformation process of landslide. The landslide warning time and evolution stages obtained from the curves of acceleration, kinetic energy and its rate are in good agreement, which indicates the feasibility and effectiveness of the proposed warning and forecasting method. According to the research, automatic early-warning of critical landslide sliding is expected to achieve. ©, 2015, Academia Sinica. All right reserved.