摘要
文章利用有限元模型,分析了顺层边坡的软弱层倾角、强度以及上伏滑体的体积和重度对边坡稳定性的影响。结果表明:边坡的安全系数随软弱层的倾角和滑体的体积的增大先减小后增大,与粘聚力的关系呈线性增长的模式;当内摩擦角在小于某个阈值时,安全系数的增长比较缓慢,当其大于阈值时,安全系数会陡增;滑体的临界位移随滑体容重的增长总体呈线性增长的趋势。
By using the finite element theory,this article analyzes the influential factots such as the oblique angle and intensity of low-pressure zone, the volume of landside and the bulk density to the stability of the parallel slope.The result indicates that, as the oblique angle of low-pressure zone and the volume of landside increases,the safety index first reduces, and then increases.And the safety factor has a linear relation with the cohesive strength.If the angle of internal friction is less than some certain threshold value,the safety index increases slowiy;while the angle is bigger than this threshold value, the safety index increases suddenly.The critical displacement linearly increases as the bulk density of the landside increases.
出处
《西部交通科技》
2009年第10期24-27,共4页
Western China Communications Science & Technology
关键词
顺层边坡
影响因素
安全系数
临界位移
Parallel slope
Influence factors
Safety index
Critical displacement
