偏转型滑坡滑动与堆积影响因素研究
发布时间：2018-08-13 17:25
【摘要】：高速远程滑坡不仅具有运动机理复杂、危害大、发生突然等特点,而且滑坡在运动中经历了斜坡加速、坡脚碰撞、偏转持速效应、减速堆积的过程。通过室内滑坡模型试验,研究了岩土体类型、偏转角和下垫面对高速远程滑坡运动特征的影响。试验结果表明:滑坡体的运动距离受控于岩土体类型,随着偏转角的增大,滑坡运动距离减小,最大堆积厚度增加,同时偏转角对滑坡体有明显的颗粒筛分现象。下垫面摩擦类型对滑坡运动参数具有明显的作用,影响滑坡体最终的堆积形态。试验结果为深入研究滑坡运动速度、运动距离及堆积形态提供了重要的参考依据。
[Abstract]:High-speed remote landslide not only has the characteristics of complex motion mechanism, great harm and sudden occurrence, but also experienced the process of slope acceleration, slope foot collision, deflection velocity effect and deceleration accumulation. The effects of rock and soil type, deflection angle and underlay on the movement characteristics of high speed and long distance landslide were studied by laboratory landslide model test. The results show that the movement distance of landslide is controlled by the type of rock and soil. With the increase of deflection angle, the distance of landslide motion decreases and the maximum accumulation thickness increases. At the same time, the deflection angle has obvious particle screening phenomenon for landslide body. The friction type of the underlying surface has an obvious effect on the landslide motion parameters and affects the final accumulation form of the landslide body. The experimental results provide an important reference for the further study of landslide movement velocity, movement distance and accumulation shape.
【作者单位】： 西南科技大学土木工程与建筑学院;
【基金】：国家自然科学基金项目(41272297) 四川省科技厅项目(2014JY0121) 四川省教育厅重点项目(14ZA0095) 西南科技大学研究生创新基金项目(16ycx079)
【分类号】：P642.22
[Abstract]:High-speed remote landslide not only has the characteristics of complex motion mechanism, great harm and sudden occurrence, but also experienced the process of slope acceleration, slope foot collision, deflection velocity effect and deceleration accumulation. The effects of rock and soil type, deflection angle and underlay on the movement characteristics of high speed and long distance landslide were studied by laboratory landslide model test. The results show that the movement distance of landslide is controlled by the type of rock and soil. With the increase of deflection angle, the distance of landslide motion decreases and the maximum accumulation thickness increases. At the same time, the deflection angle has obvious particle screening phenomenon for landslide body. The friction type of the underlying surface has an obvious effect on the landslide motion parameters and affects the final accumulation form of the landslide body. The experimental results provide an important reference for the further study of landslide movement velocity, movement distance and accumulation shape.
【作者单位】： 西南科技大学土木工程与建筑学院;
【基金】：国家自然科学基金项目(41272297) 四川省科技厅项目(2014JY0121) 四川省教育厅重点项目(14ZA0095) 西南科技大学研究生创新基金项目(16ycx079)
【分类号】：P642.22
【参考文献】
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