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近年来,高填方边坡失稳给山区机场建设和运营带来了严重影响。本文以攀枝花机场12#滑坡为研究实例,阐述了高填方边坡的滑动失稳机制及其稳定性支护措施的有效性。论文首先介绍了滑坡的地质环境、滑坡基本特征及边坡的预加固方案。在对滑坡的形成条件及其影响因素分析的基础上,结合数值模拟,揭示了12#滑坡的形成机制及其变形发展过程。研究表明,导致滑坡的主导因素包括:填方边坡底部的软弱泥岩层、边坡内部丰富的地下水、边坡加固桩不合理的布置以及强降雨。12#滑坡的形成机制可以概括为:推移式蠕滑-累进性剪断-溃滑与超覆。 相似文献
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Based on the geographical circumstance, climate and the boundary layer meteorology features of the Pearl River Delta, a boundary layer concept model of the Pearl River Delta was built. The concept model consists of four fundamental factors that affect the boundary layer meteorology of the Pearl River Delta and can convincingly explain the reason of the air quality change in the Pearl River Delta. The model can be used to the diffusion capability analysis, the air pollution potential forecasting or haze forecasting, etc. 相似文献