摘要
用房柱采矿法开采王村铝土矿中厚矿体,克服了人工底柱长壁式采矿法中存在的采面采不到全高、回采率低、木支护劳动强度大、施工困难等不足,可使回采率提高8.4%,半年少报销地质矿量4200t,并且降低了矿块的粉碎率,提高矿石利用率3%。
The questions existed in artifical bottom piller longwall mining method, such as low stoping rauo, large laburing stregth for wood support and difficult construction, can be overcomed through use of room-and-piller mining method to mine original ore body of Wangcun Alumina Mine. This method can increase by a factor of 8.4% of stoping ratio, can decrease powder ratio of ore and can increase by a factor of 3% of utilization factor of ore,
出处
《山东冶金》
CAS
1996年第1期1-3,共3页
Shandong Metallurgy
关键词
采矿
房柱法
铝土矿
mining, room-and-piller mining method, alumina mine, clay mine, hard clay mine
