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首页> 外文期刊>Advances in civil engineering >Regional Stability Analysis of Red Clay Slope Based on Different Failure Modes: A Case Study in Taizaifu Area, Fukuoka
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Regional Stability Analysis of Red Clay Slope Based on Different Failure Modes: A Case Study in Taizaifu Area, Fukuoka

机译：基于不同故障模式的红土坡面的区域稳定性分析 - 以福冈省太振地区为例

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摘要

Red clay slopes have different failure modes in different geological and climatic contexts. Underlying weak layers are frequently witnessed in integral failures because of the reverse consolidation characteristics. On the contrary, heavy rainfall often causes superficial sliding for a considerable infiltration through developed microfractures. Based on the Geographic Information System, regional stability of red clay slopes was evaluated with two failure modes, such as "integral sliding" and "planar sliding." First, terrain and borehole data of the study area were used to construct the digital elevation model. Second, slope units were partitioned as research objects. For integral sliding, the slip surface was supposed to lie above the strata interface, and it was regarded as a lower part of an ellipsoid. After calculating safety factors of potential slip surfaces that were randomly generated by the Monte Carlo method, the minimum safety factor of the slope unit and the critical slip surface could be determined. For shallow landslides triggered by rainfall infiltration, the one-dimensional infiltration model and infinite slope model were used. Moreover, the difference between the sliding direction of each column and the main aspect of entire slope unit was considered in safety factor calculation. Finally, regional slope stability characterized by the safety factor would be available; thus, it would be beneficial to sliding prevention and disaster treatment in this region.
机译：红粘土斜坡在不同地质和气候背景下具有不同的失效模式。由于逆转的合并特征，潜在的弱层经常以积分的故障相关。相反，大雨往往导致浅表滑动，通过发育的微磨损显着渗透。基于地理信息系统，用两种故障模式评估了红色粘土斜坡的区域稳定性，如“整体滑动”和“平面滑动”。首先，使用研究区域的地形和钻孔数据来构造数字高度模型。其次，坡度单位被分配为研究对象。对于整体滑动，滑动表面应该位于地层界面上方，并且被认为是椭圆体的下部。在计算由蒙特卡罗方法随机产生的潜在滑动表面的安全因素之后，可以确定斜坡单元和临界滑动表面的最小安全系数。对于通过降雨渗透引发的浅滑坡，使用了一维渗透模型和无限斜坡模型。此外，在安全因子计算中考虑了每列的滑动方向与整个斜率单元的主要方面之间的差异。最后，可提供安全系数特征的区域边坡稳定性;因此，在该地区的滑动预防和灾害治疗将是有益的。

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  • 来源
    《Advances in civil engineering》 |2019年第13期|1269832.1-1269832.11|共11页
  • 作者

    Wei Fang;

  • 作者单位

    Changsha Univ Sci & Technol Sch Traff & Transportat Engn Changsha 410004 Hunan Peoples R China;

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