三山岛新立矿区海底矿床安全高效开采技术研究

Research on Safe and Efficient Mining Technology of Submarine Deposit in Xinli Mining Area of Sanshandao Gold Mine

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。

Marine metal deposit mining is unprecedented in China,Xinli mining area,affiliated to Sanshandao gold mine,is the first one.According to the mining choosing principle and combining the production practice and relevant experience of Sanshandao gold mine,4 representative schemes are put forward.After the comprehensive comparison and analysis,high-drift back-filling method is choosed and tested in 63# and 71# stopes to ensure the safety of submarine mining.Industrial test results show that the high-drift back-filling method has the significant advantages of safety mining,low ore dilution and so on.The ore dilution rates of 63# and 71# stopes are 6.5%、4.3%,and loss rates are 23.78%、5.6%.The mining production ability is improved greatly,and the ecological benefit is 1.85 million yuan.