高陡永久硬岩土复合边坡稳定性分析与评价

为了保证选煤厂及附属设施服务期间内不受邻近高陡排土场边坡稳定性的影响，在建立排土场边坡及下部各层位实体模型的基础上，利用极限平衡数值计算软件求算不同工况条件下单台阶边坡、整体边坡的稳定性。计算结果表明:天然状态下排土场单台阶边坡、整体边坡稳定性满足稳定性要求；暴雨饱水条件下排土场边坡处于欠稳定状态；露天矿前期排弃的碎石、黏土物料对天然边坡的稳定性影响不大，对饱水条件下边坡的稳定性起控制作用。为保证排土场边坡长久稳定性，排弃终了后仍需做好边坡的防排水措施，并建议采取边坡压脚措施。

Stability analysis and evaluation of high steep permanent hard soil composite slope

In order to ensure that the coal preparation plant and ancillary facilities are not affected by the slope stability of the adjacent high and steep dump during the service period，on the basis of the solid model of the slope and the lower layers in the soil dump，the stability of the single-step slope and the integral slope under different working conditions is calculated by using the limit balance numerical calculation software.The calculation results show that:under natural conditions，the stability of single step slope and integral slope meets the requirements of stability.The slope of the dump is in an unsteady state under the condition of heavy rainfall.The gravel and clay materials discharged in the early stage of open-pit mine have little effect on the stability of natural slope，and play a controlling role on the stability of slope under the condition of full water.In order to ensure the long-term stability of the slope in the dump site，it is still necessary to take good measures to prevent and drain the slope，and it is suggested to take measures to press the foot of the slope.