百米级高尾砂坝回采优化设计

Optimization design of 100 meter high tailings dam

大溶溪尾砂坝,总坝高100m,尾砂堆存总量约313万方,该坝隶属的矿山为积极响应国家打造"和谐矿山,绿色矿山"的方针,经尾砂物理实验,计划将库内贮存的白钨矿尾砂用作高速路基砂料,对尾矿库尾砂进行回采削荷回用。文章通过对水下开采、湿法、干法等回采方案进行细致比选,最终对该尾砂坝优化选择枯水期干法回采,回采后尾砂坝降至40m高,大幅降低尾砂坝安全隐患,又促进尾砂的综合利用,具有较高的环保效益。

Da dissolve Creek tailings dam, the total height of the dam is 100 m, the total amount of tailings is about 3 million 130 thousand parties. The mine under the dam is the policy of actively responding to the national ＂harmonious mine, green mine＂. Through the physical experiment of the tailings, the tailings stored in the reservoir are used as the high speed roadbed sand, and the tailings of the tailings are cut back. Use. In this paper, through the selection of underwater mining, wet method and dry method, the dry process of the tailings dam is optimized by dry method, the tailings dam is reduced to 40 m high, the safety hidden danger of tailings dam is reduced greatly, and the comprehensive utilization of tailings is promoted, and the environmental benefits are higher.