A Discrete Element Analysis of the Sliding Friction Heat in High-Speed and Long-Runout Landslides |
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| Authors: | ZHU Yao ZHU Chengguang LIU Chun LIU Hui and DENG Shang |
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| Institution: | School of Earth Sciences and Engineering, Nanjing University, Nanjing 210046, China,School of Earth Sciences and Engineering, Nanjing University, Nanjing 210046, China,School of Earth Sciences and Engineering, Nanjing University, Nanjing 210046, China;Nanjing University High-tech Institute at Suzhou, Suzhou 215123, Jiangsu, China,School of Earth Sciences and Engineering, Nanjing University, Nanjing 210046, China and Nanjing University High-tech Institute at Suzhou, Suzhou 215123, Jiangsu, China |
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| Abstract: | Earthquake is one of the main causes of high-speed and long-runout landslides. Generally, the heat generated in the sliding zone is significant in such devastating landslides. In this study, we establish a two dimensional slope model which includes 0.2 million elements to simulate the development of high speed and long-runout landslides using the discrete element software MatDEM. The model not only suggests that heat is produced by friction and fracturing, but also simulates the process of tension generation in cracks and the generation of a high heat zone near the sliding region. Besides, the heat field graph indicates a banded high heat belt that is related to the location of the thickest sliding body. The logarithms of the total calorific value and the highest value in the heat zone during the sliding process are linearly related to the logarithm of the landslide height. |
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| Keywords: | MatDEM Discrete element method Energy Heat Landslide |
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