A Simple Prediction Model for Shallow Groundwater Level Rising in Natural Slopes Based on Finite Element Analysis
Every year, numerous numbers of slope failures are induced by heavy rainfall with the influence of monsoon especially in developing countries in Asia. The finite element method has been often used to analyze the mechanisms of slope failure under rainfall. Usually a high-spec calculator and a long period of calculation time are inevitably required to carry out such rigorous simulations. In this study, however, a simple prediction method for groundwater rising in natural slopes of the ground comparatively shallow depth is developed based on the parametric studies with the finite element method under the assumption of semi-infinite homogeneous slope, and in the future such method will be adopted more for the above system since the calculation cost is expected to be much lower.
Keywordsseepage flow finite element method groundwater level surface failure semi-infinite slope
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Part of this work was supported by JST SICORP (e-ASIA Joint Research Program) Grant Number JPMJSC18E3, Japan. The authors wish to acknowledge Prof. Go SATO of Teikyo Heisei Univ., Dr. Takashi KIMURA of National Research Institute for Earth Science and Disaster Resilience, other combined members for the e-ASIA, Assoc. Prof. Satoshi GOTO of the University of Yamanashi and Mr. Kyosuke HORI (former student of Gunma Univ.). The authors gratefully acknowledge “Japan Meteorological Agency (rainfall data used for analysis)” and “Ministry of Land, Infrastructure, Transport and Tourism (XRAIN data from Data Integration and Analysis System)”.
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