| 离散元在地震引发的滑坡—碎屑流运动规律上的应用 |
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| 引用本文： | 李 松,苏生瑞,高 晖,尚瑾瑜.离散元在地震引发的滑坡—碎屑流运动规律上的应用[J].甘肃地质学报,2012(2):79-82. |
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| 作者姓名： | 李 松 苏生瑞 高 晖 尚瑾瑜 |
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| 作者单位： | [1]甘肃省地质环境监测院,甘肃兰州730050 [2]长安大学地质工程与测绘学院．陕西西安710054,甘肃兰州730050 |
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| 摘 要： | 2008年5月12日14时28分,四川省汶川县发生8级特大地震。此次地震触发的高速远程滑坡—碎屑流主要沿龙门山主中央断裂地震破裂带展布。本文在现场调查分析的基础上,使用2D-block离散元软件对地震引发的谢家店子滑坡—碎屑流运动规律进行了全程数值模拟分析。通过现场调查和模拟结果对比分析,将该滑坡的运动规律概括为4个过程：剧动启程抛掷;快速撞击—气垫飞行;铲刮减速碎屑流;堆积掩埋。
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| 关 键 词： | 汶川地震 高速远程滑动 谢家店子滑坡—碎屑流 离散元 |
DISCRETE ELEMENT METHOD IN THE MOVING FEATURES OF THE LANDSLIDE-ROCKFLOW BY THE EARTHQUAKE |
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| LI Song,SU Sheng-rui,GAO Hui and SHANG Jin-yu.DISCRETE ELEMENT METHOD IN THE MOVING FEATURES OF THE LANDSLIDE-ROCKFLOW BY THE EARTHQUAKE[J].Acta Geologica Gansu,2012(2):79-82. |
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| Authors: | LI Song SU Sheng-rui GAO Hui and SHANG Jin-yu |
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| Institution: | 1. Gansu Institute of Geological Environment Monitoring, Lanzhou 730050, China; 2 School of Geological Engineering and Surveying, Chang＇an University, Xi ＂an 710054, China) |
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| Abstract: | On May 12th, 2008, an earthquake of magnitude 8 occurred in Wenchuan county, Sichuan province, which subsequently caused many landslides among the Long MenShan central fault seismic zone. On the basis of the investigation, this paper uses the discrete element method through 2D-Block software to analyse the mechanism of the Xiejiadi anzi landslide-rockflow. The results are presented below： the instantaneously sliding stage; the intensive colliding -air cushion effect stage; the scraping slow down stage; the deposit state. |
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| Keywords: | Wenchuan Earthquake high speed long distance landslide Xiejiadianzi landslide-rockflow discrete element method |
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