基于五林矿场的冻融环境下缓倾斜边坡稳定性分析研究

Analysis on Slope Stability of Freeze-thaw Environment in Wulin Mining Field

五林露天矿场处于高寒冻融环境,地质条件复杂。文章通过冻融机理及边坡稳定性理论研究,利用直剪试验获得力学参数,结合数值模拟,从冻结厚度、融化厚度、含水率、冻融循环次数四个方面对目标矿区边坡稳定性进行分析。分析发现该矿区边坡稳定性较好,坡体滑塌风险较小,实验发现含水量和循环次数对边坡稳定性影响较大,三次冻融循环以后,含水量为主要影响因素。在此基础上提出铺设排水管道,使用土工格栅防护,雷达监测等相关防护措施。

Wulin open- pit mines in the alpine freeze -thaw environment, complicated geological conditions. Based on the mechanism of freeze - thaw and theoretical research of slope stability, the use of direct shear test to obtain mechanical parameters, combined with numerical simulation, the freezing and melting thickness, moisture content, freezing and thawing cycle times four aspects of target mining slope stability is analyzed. Analysis found that the mining slope stability is good, slope sliding risk is small, it was found that water content and the number of cycles the influence to the stability of slope, and three times after freezing and thawing cycle, water content as the main influencing factors. Based on this, advances laid drainage pipe, the use of geogrid protective, radar monitoring and related protection measures.