复合水动力卸荷-负载响应比物理预测模型及其在水库冲积层滑坡中的应用

IF 4.1 2区 地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY
Lu Guo, Keqiang He, Honghua Liu, Fandi Meng, Xuchun Wang
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引用次数: 0

摘要

众所周知,水库冲积层滑坡的变形和破坏往往是由水库水位变化和降雨的复合动力作用决定的。本文在系统分析水库水位、降雨和水库冲积层滑坡位移变化规律的基础上,提出以降雨和水库水的复合水动力作用为卸荷-加载参数,以滑坡位移为卸荷-加载响应参数。在此基础上,建立了水库冲积滑坡复合水动力卸荷响应比的物理预测模型,并深入分析和确定了复合水动力卸荷响应比与其稳定性演变之间的定量关系。在上述研究的基础上,以典型的水动力压力滑坡--曙坪滑坡为例,利用卸荷-荷载响应比模型系统地评价和预测了复合水动力作用下滑坡的稳定性演变规律和变化趋势。预测结果表明,复合水动力卸荷-荷载响应比的变化规律与其稳定性的动态演化规律是一致的。因此,上述研究表明,复合水动力卸荷-荷载响应比参数是一种有效的水库冲积层滑坡位移动力评价参数,可用于水库冲积层滑坡的预测。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Physical Prediction Model of Compound Hydrodynamic Unload-Load Response Ratio and Its Application in Reservoir Colluvium Landslide

It is well known that the deformation and damage of reservoir colluvium landslides are often determined by the combined dynamics of reservoir water level change and rainfall. Based on the systematic analysis of the change law of reservoir water level, rainfall and displacements of reservoir colluvium landslide, this paper proposes the compound hydrodynamic action of rainfall and reservoir water as the unload-load parameter, and the landslide displacement as the unload-load response parameter. Based on this, a physical prediction model of the compound hydrodynamic unload-load response ratio of reservoir colluvium landslide was established, and the quantitative relationship between the compound hydrodynamic unload-load response ratio and its stability evolution was in-depth analyzed and determined. On the basis of the above research, taking Shuping landslide, a typical hydrodynamic pressure landslide as an example, the unload-load response ratio model is used to systematically evaluate and predict the stability evolution law and the change trend of the landslide under compound hydrodynamic action. The prediction result shows that the variation law of the compound hydrodynamic unload-load response ratio is consistent with the dynamic evolution law of its stability. Therefore, the above studies show that the compound hydrodynamic unload-load response ratio parameter is an effective displacement dynamic evaluation parameter for reservoir colluvium landslides, so it can be used in the prediction of the reservoir colluvium landslides.

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来源期刊
Journal of Earth Science
Journal of Earth Science 地学-地球科学综合
CiteScore
5.50
自引率
12.10%
发文量
128
审稿时长
4.5 months
期刊介绍: Journal of Earth Science (previously known as Journal of China University of Geosciences), issued bimonthly through China University of Geosciences, covers all branches of geology and related technology in the exploration and utilization of earth resources. Founded in 1990 as the Journal of China University of Geosciences, this publication is expanding its breadth of coverage to an international scope. Coverage includes such topics as geology, petrology, mineralogy, ore deposit geology, tectonics, paleontology, stratigraphy, sedimentology, geochemistry, geophysics and environmental sciences. Articles published in recent issues include Tectonics in the Northwestern West Philippine Basin; Creep Damage Characteristics of Soft Rock under Disturbance Loads; Simplicial Indicator Kriging; Tephra Discovered in High Resolution Peat Sediment and Its Indication to Climatic Event. The journal offers discussion of new theories, methods and discoveries; reports on recent achievements in the geosciences; and timely reviews of selected subjects.
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