摘要
兰坪金鼎铅锌矿Ⅰ#、Ⅱ#矿体为特大型倾斜厚矿体,矿体稳固,上盘围岩松散破碎。在使用预留顶板空场采矿法回采时,矿石损失率较大,预留的高品位护顶矿石成为了一种永久损失。结合此类矿体国内外开采方法现状,探索实践出了一种空场嗣后充填与充填采矿法相结合的采矿方法。实践表明,此种采矿方法可大大减小上盘围岩暴露面积,并提高矿石回采率与开采强度。
The lead-zinc ore bodies I and I1 in Jinding town of Lanping county are large inclined thick ore body. The orebody is stable but the hanging side wall rock is loose and fractured. There is a big loss in high grade canopy guard ore reserve which is a permanent loss when mining by reserve roof open stope method. Based on the existing mining method for such orebody at home and abroad,we have explored a way combining open and delayed filling stoping with filling mining methods to extract the orebody. Practice shows that this kind of mining method can greatly reduce the exposed area of the hanging side rock and improve the ore recovery rate and mining intensity.
出处
《矿冶》
CAS
2014年第3期46-49,共4页
Mining And Metallurgy
关键词
空场嗣后充填
充填采矿法
上盘破碎
open and delayed filling stoping
filling mining methods
fractured hanging side
