As the tailings of metal mine production rate is high,so,it is difficult to make full use of the tailings material. The goal of no tailings discharge can be realized by filling the open-pit with tailings material. Based on the principle of limit e-quilibrium method of SLOPE/W software,the slope formed by dumping waste rocks and tailings is simulated,the rational slope pattern with reasonable stability coefficient is obtained. The difference of thickness and slope of the mixed placement of materi-als in horizontal and inclined are analyzed respectively to analyze the rational stacking scheme of waste rocks and tailings. The results show that stability of the slope formed by using waste rocks and tailings is superior to the one formed by separately using waster rocks or tailings under the same conditions;the reasonable slope angle is from 35° to 45°,the stacking thickness of waste rocks is the fours times of the one of tailings. The above analysis results further show that based on multi-sensor and wire-less transmission technique,the slope stability can be monitored effectively by setting the the warning value of slope stability, which can provide a effective method for dumping tailings in open-pit.%金属矿山尾砂出产率很高,合理利用尾砂材料是一项艰巨的任务.利用尾砂干堆充填露天坑可实现无尾矿外排.利用软件SLOPE/W极限平衡法原理,模拟废石、尾砂混合排放的边坡,以得出边坡稳定系数较为合理的边坡形式.分别从水平和倾斜混合排放中各材料排放厚度和坡度的不同,来分析合理的废石、尾矿砂堆放方案.得出结论:废石、尾矿砂分层混合堆放的边坡稳定性高于相同情况下单一废石或单一尾砂堆放的边坡;边坡坡角在35°~45°较为合理,且废石和尾矿砂堆放的理想厚度比为4:1.采取多传感器与无线传输技术进行边坡稳定性监测,并设定预警值,为利用露天坑排尾提供了保障.
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