摘要
我国山区有很多砂泥岩软硬互层的顺层岩质边坡,传统的顺层岩质边坡失稳分析方法中的水压力分布形式存在一些缺陷,文中通过对岩体裂隙结构的分析,提出了新的水压力分布形式,不同裂隙结构时,应采用不同的水压力分布形式分析,并将其运用到砂泥岩互层的岩质边坡中。当坡体无张拉裂隙时,对于潜滑裂隙下端具有较大的泄水速度,即在裂隙中保持有稳定的水位的情形,以及当坡体无张拉裂隙且潜滑裂隙下端无泄水口时,两种水压力分布情况下所计算得到的最大水压力值相同,因此所计算得到的坡体安全系数相同。
There are many bedding rock slope with sandstone and mudstone interbed in mountain areas of China and there are some defects in the water pressure distribution form of the traditional instability analysis method of bedding rock slope. A new water pressure distribution form is proposed based on the analysis of rock mass fissure structure. For the different fissure structures, the different water pressure distribution forms should be adopted,and then is used in the rock slope with sandstone and mudstone interbed. When the slope has no tension cracks,there is a large discharge velocity for the lower end of the potential landslide fissure, namely that, there is the stable water level in the cracks, the slope has no tension cracks and the lower end of potential landslide fissure has no outlet, the maximum water pressures calculated are the same under the two water pressure distribution forms.Therefore the calculated safety coefficient of slope is the same.
出处
《东北水利水电》
2018年第10期4-7,共4页
Water Resources & Hydropower of Northeast China
关键词
砂泥岩互层
库岸边坡
裂隙水压力
稳定性
sandstone and mudstone interbed
bank slope
fissure pressure
stability
