缓倾斜中厚矿体微贫损动态控制技术研究
Research on dynamic control technology for slight dilution and loss in moderately inclined medium-thick ore bodies
侯俊 1卢铀嘉 2刘彦君3
作者信息
- 1. 长春黄金研究院有限公司;深部金属矿采动地压灾害防控国家矿山安全监察局重点实验室
- 2. 内蒙古包头鑫达黄金矿业有限责任公司
- 3. 长春黄金研究院有限公司
- 折叠
摘要
缓倾斜中厚矿体赋存条件较为特殊,采场空顶高度较高,顶板管理困难,采准工程量大,开采难度较大,普遍存在采矿损失率高、矿石贫化率高等问题.针对鑫达黄金矿业公司囫囵图矿区32-2 号脉采场桃形矿柱难回收、贫损指标不理想等问题,研发缓倾斜中厚矿体微贫损动态控制技术,系统运用全方位钻孔测斜技术,反演设计炮孔与实际炮孔的三维空间模型,研究钻孔偏斜规律,大幅度降低矿石贫化率,在回采过程中2 条凿岩巷道之间的桃形矿柱采用多孔深协同组合开采技术,有效降低了采矿损失率,显著提升资源利用率和技术经济指标,可为类似矿山安全高效开采提供新的技术途径.
Abstract
The moderately inclined medium-thick ore bodies have unique occurrence conditions,with fairly high stope ceiling heights,difficult roof management,large amounts of preliminary mining work,and significant mining chal-lenges.Common issues include high mining loss rates and high ore dilution rates.To address the problems in the stope of Vein 32-2 of the Huluntu mining area at Xinda Gold Mining Company,such as the difficulty in recovering the peach-shaped ore pillars and unsatisfactory dilution and loss indicators,a dynamic control technology for slight dilution and loss in moderately inclined medium-thick ore bodies was developed.This technology systematically utilizes all-around borehole inclinometry,reversely deduces the 3D spatial model of the designed boreholes versus actual bore-holes,and studies the borehole deviation patterns.It significantly reduces the ore dilution rate.During the recovery process,the peach-shaped ore pillars between two drilling drifts are mined using a mining method with a combination of different hole lengths,effectively reducing the mining loss rate.This approach significantly enhances resource utiliza-tion and the technical and economic indicators,providing a new technical pathway for the safe and efficient mining of similar mines.
关键词
缓倾斜中厚矿体/全方位钻孔/钻孔测斜/多孔深协同组合开采/微贫损动态控制/采矿损失率Key words
moderately inclined medium-thick ore body/all-around borehole/borehole inclinometry/mining with a combination of different hole lengths/dynamic control of slight dilution and loss/mining loss rate引用本文复制引用
基金项目
国家重点研发计划项目(2022YFC2905004)
出版年
2024
NETL
NSTL
万方数据