A Discrete Element Analysis of the Sliding Friction Heat in High-Speed and Long-Runout Landslides

作者：ZHU Yao,ZHU Chengguang,LIU Chun,LIU Hui,DENG Shang

摘要：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.

发文机构：School of Earth Sciences and Engineering Nanjing University High-tech Institute at Suzhou

关键词：MatDEMDISCRETEelementmethodEnergyHeatLANDSLIDE

分类号： P64[天文地球—地质矿产勘探][天文地球—地质学]