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海底金属矿床开采在我国尚无范例,三山岛金矿新立矿区属于我国第一个海下开采的金属矿山。根据采矿方法的选择原则,结合三山岛金矿新立矿区海底开采的技术条件,提出了4个代表性方案,通过对各代表性采矿方案的综合比较,为确保海底不在矿床开采过程中产生导水性破坏,选择了高进路充填采矿法,并在63#和71#两个具有代表性的试验采场进行了工业试验。结果表明,高进路充填采矿法具有贫化损失小、作业安全等显著特征,63#和71#两个采场平均贫化率分别为6.5%、4.3%,损失率分别为23.78%、5.6%,而且大幅度提高了采矿生产能力,取得了1.85亿元的经济效益。
Seabed metal deposit mining in our country there is no precedent, Sanshandao Gold Mine Xinli Mining belongs to China’s first underground mining of metal mines. According to the principle of selection of mining methods and combining with the technical conditions of seabed mining in Xinli mining area of Sanshandao Gold Mine, four representative schemes are proposed. Through comprehensive comparison of representative mining schemes, in order to ensure that the seabed is not generated during the mining process Water-based damage, the choice of high-road filling mining method, and 63 # and 71 # two representative test stope carried out industrial tests. The results show that the high-way filling mining method has the characteristics of low depletion loss and safe operation. The average piling-off rates of 63 # and 71 # stopes are 6.5% and 4.3%, respectively, and the loss rates are respectively 23.78% and 5.6% %, But also greatly improved the mining production capacity, achieved 185 million yuan of economic benefits.