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G318川藏公路段泥石流危险性评价

ISSN号：1008-2786
期刊名称：山地学报
时间：2013.5.15
页码：342-348
分类：P642.22[天文地球—工程地质学;天文地球—地质矿产勘探;天文地球—地质学] U469.722[机械工程—车辆工程;交通运输工程—载运工具运用工程;交通运输工程—道路与铁道工程]
作者机构：[1]Key Laboratory of High-speed Railway Engineering (Southwest Jiaotong University), Ministry of Education, [2]Department of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China, [3]Zhengzhou Zhonghe Geoteehnieal Engineering Co., LTD, Zhengzhou, China
相关基金：NSF of China under Contract No. 41030742; NBRP of China （973 Program） under Grant No. 2011CB013605; Scientific Research Foundation of Graduate School of Southwest Jiaotong University This study is supported in part by the NSF of China （Contract No.41030742）, NBRP of China （973 Program - 2011CB013605） and Scientific Research Foundation of the Graduate School of Southwest Jiaotong University.
相关项目：川藏交通干线环境灾害演化规律与工程风险

关键词：运行距离, 预测模型, 山体滑坡, 大地震, 引发, 汶川, 水, 指数关系, Wenchuan earthquake, landslides, run-out distance, prediction model, relationship

中文摘要：

山峰地面加速(针网阵列) ，滑动集体 V 的卷，山 H L 的高度和一座山的斜坡角度是影响山崩 L 的水平刺杀距离的四个重要参数。在他们之中的关联从在 Wenchuan 地震，然后一个预言模型期间摇晃扎根和另外的因素触发的 67 山崩基于领域调查统计上被学习因为水平刺杀距离 L 在这研究被开发。这个模型在水平刺杀距离 L 和模型的有效性上把到期的考虑给上述四个参数的含意被 Donghekou 和 Magong Woqian 山崩验证。同时，模型的优点被把它与二个另外的普通预言方法作比较显示出。从分析和比较拉的主要调查结果是：(1 ) 一种指数的关系独立在 L 和木头 V， L 和木头 H L， L 和木头针网阵列之间存在，但是一种否定指数的关系在 L 和木头之间存在晒黑，它同意统计结果；并且( 2 )分别地，根据在一座山的高度之间的相对关系的分析结果，山崩发生的(H)和这个地方，在 2H/3-H 的距离的可能性， H/3-2H/3 ，和 0-H/3 是70.8%，15.4%，和13.8%表明大多数山崩发生在 H/2-H 的距离。这个预言模型能为山崩危险的预防和缓解提供有效技术支持。

英文摘要：

The peak ground acceleration （PGA）, the volume of a sliding mass V, the height of a mountain HL and the slope angle θ of a mountain are four important parameters affecting the horizontal run-out distance of a landslide L. Correlations among them are studied statistically based on field investigations from 67 landslides triggered by the ground shaking and other factors during the Wenchuan earthquake, and then a prediction model for horizontal run-out distance L is developed in this study. This model gives due consideration to the implications of the above four parameters on the horizontal run-out distance L and the validity of the model is verified by the Donghekou and Magong Woqian landslides. At the same time, the advantages of the model are shown by comparing it with two other common prediction methods. The major findings drawn from the analyses and comparisons are：（1） an exponential relationship exists between L and log V, L and log HL, L and log PGA separately, but a negative exponential relationship exists between L and log tan0, which agrees with the statistical results; and （2） according to the analysis results of the relative relationship between the height of a mountain （H） and the place where the landslides occur, the probabilities at distances of2H/3-H, H/3-2H/3, and O-H/3 are 70.8%, 15.4%, and 13.8%, respectively, revealing that most landslides occurred at a distance of H/2-H. This prediction model can provide an effective technical support for the prevention and mitigation of landslide hazards.

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