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针对红透山尾矿库坝体抗滑稳定性问题,以坝体土层分布规律及各土层组成成分为研究对象,由室内试验确定各土层的基本物理力学参数和渗透系数,由数值模拟分别对不计条块间作用力的“瑞典条分法”和计条块间作用力的“简化Bishop法”进行抗滑稳定性计算.拟合计算结果表明:尾矿库坝体抗滑性较为稳定,最危险滑动面出现在坝脚附近,较小的安全储备将导致坝体存在整体滑移的危险;应适当减小坡面坡度并采取坝坡处均匀放矿的方式以增强尾矿库坝体的整体稳定性.
Aiming at the stability of the dam of Dongtoushan tailings dam, the distribution law of the soil layer and the composition of each soil layer are taken as the research object. The basic physical and mechanical parameters and permeability coefficient of each soil layer are determined by laboratory tests. The numerical simulation The stability calculation of anti-sliding is carried out on the simplified “Bishop method” and the “Swedish strip method” and the interaction force between strip blocks, respectively, except for the interaction between the blocks. The fitting calculation results show that: The skid resistance is relatively stable. The most dangerous sliding surface appears near the foot of the dam, and the smaller safety reserve will lead to the danger of the whole sliding of the dam. The slope gradient should be properly reduced and the method of uniform ore drawing should be adopted Enhance the overall stability of tailings dam.