| 泾阳南塬黄土滑坡的运动规律与液化效应 |
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| 引用本文： | 段钊,彭建兵,王启耀.泾阳南塬黄土滑坡的运动规律与液化效应[J].水土保持通报,2016,36(3):46-49. |
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| 作者姓名： | 段钊 彭建兵 王启耀 |
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| 作者单位： | 1. 西安科技大学 地质与环境学院，陕西 西安 710054; 长安大学 地质工程与测绘学院，陕西 西安 710054;2. 长安大学 地质工程与测绘学院,陕西 西安,710054;3. 长安大学 建筑工程学院,陕西 西安,710054 |
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| 基金项目： | 国家重点基础发展计划（973计划）项目“黄土重大灾害及灾害链的发生、演化机制与防控理论”（2014CB744702）；中国地质调查局项目“泾河南岸泾阳段黄土滑坡调查评价”（12120114036001）；西安科技大学博士启动金项目“高速远程黄土滑坡运动机理研究”（2014QDJ029） |
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| 摘 要： | 目的]查明滑坡的运动特征及其影响因素,探讨滑坡的运动规律与内在机制,为区域防灾减灾工作提供理论借鉴。方法]以泾阳南塬黄土滑坡为例,通过现场调查及槽探查明了滑坡的运动特征,采用统计学方法分析了滑坡的运动规律,在此基础上,探讨引起滑坡运动特征分异的"液化效应"。结果]按照运动特征将泾阳南塬黄土滑坡划分为流滑型和滑动型两类,流滑型滑坡的滑距一般为坡高的4倍,滑动型滑坡的滑距约为坡高的2倍。1.50×10~5 m~3可近似的认为是研究区内"足以形成最大液化程度的最小滑体体积"。结论]滑体体积及边界条件对滑坡运动液化影响显著,一般情况下滑坡体积越大、滑动边界越简单,运动液化程度就越高,运动距离也就越远;而体积越小、滑动边界越复杂,运动液化程度就越低,运动距离也就越近。
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| 关 键 词： | 运动规律 液化效应 统计方法 黄土滑坡 泾阳南塬 |
| 收稿时间： | 2015/5/12 0:00:00 |
| 修稿时间： | 2015/6/29 0:00:00 |
Motion Law and Liquefaction Effect of Loess Landslides in South Jingyang Plateau |
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| DUAN Zhao,PENG Jianbing and WANG Qiyao.Motion Law and Liquefaction Effect of Loess Landslides in South Jingyang Plateau[J].Bulletin of Soil and Water Conservation,2016,36(3):46-49. |
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| Authors: | DUAN Zhao PENG Jianbing and WANG Qiyao |
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| Institution: | College of Geology and Environment, Xi''an University of Science and Technology, Xi''an, Shaanxi 710054, China;School of Geology Engineering and Geomatics, Chang''an University, Xi''an, Shaanxi 710054, China,School of Geology Engineering and Geomatics, Chang''an University, Xi''an, Shaanxi 710054, China and School of Civil Engineering, Chang''an University, Xi''an, Shaanxi 710054, China |
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| Abstract: | Objective] To discuss the motion law and liquefaction effect by analyzing the motion characteristics and its driving factors of loess landslides in order to provide theoretical references for hazard prevention and treatment in landslide areas.Methods] The loess landslide in South Jingyang plateau was chosen to research the motion law of landslide by site investigating, trench excavating, and statistical analysis. Based on the above works, the influences of liquefaction effects on motion characteristics were discussed.Results] According to the motion characteristics, the landslide in South Jingyang plateau was classified into two types:flowslide and slide. In the flowslide type, the sliding distance was four times of slope height, while the sliding distance was two times of slope height in the slide type. The minimum landslide volume that was sufficient to produce the greatest degree of liquefaction was about 1.50×105 m3 in study area.Conclusion] Greater volume and simpler sliding boundary of landslide will improve flow motion, vice versa. |
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| Keywords: | motion law liquefaction effect statistical methods loess landslide South Jingyang plateau |
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