大规模采场三维探测及回采指标可视化计算

针对我国金属矿山大规模采场回采指标难以准确获取的现状,综合运用空区激光探测系统(CMS)和大型矿床三维软件Surpac等数字化工具,结合凡口铅锌矿N3-4采场实际,研究一种新颖的大规模采场回采指标可视化计算方法.采用CMS探测三维采场空区,以宅区实测数据为基础运用Surpac构建采空区三维可视化模型,获取采场空区的三维形态和实际边界;运用采场设计资料,建立采场回采设计模型及矿岩边界模型,通过模犁间的布尔运算,计算出采场存留矿量、回采总体积、采下废石量、采下充填体最、采下纯矿石量、回采总量及回采贫化率等,从而有效地实现了大规模采场回采指标的可视化计算.研究结果表明:采用该方法计算获得的采场回采指标可靠,可用于矿山实际生产管理和同采质量评估.

Stope 3D monitoring and its mining index visible calculation

Aimed at the difficulty in gaining large-scale stope mining index accurately in domestic metal mines, and with the cavity monitoring system (CMS), mining 3D software Surpac, and the actual situation of stope N3-4 of Fankou Lead-Zinc Mine, a new visible calculation method of mining index for large stope was developed. Firstly, the stope vacancy was monitored using CMS, taking cavity measured data as foundation, cavity three-dimensional model of the stope opening was created using Surpac software and gain the stope three-dimensional configuration and the actual boundary accurately. Then, the stope designed model and ore-rock interface digital terrain model (DTM) were established according to the stope design material. Finally, using ore-rock interface DTM to cut cavity model or through Boolean calculation among the models, ore remains, mining total volume, mullock, backfilling, pure ore and dilution rate of stope N34 were calculated accurately, thus the large-scale stope mining index visible calculation was realized effectively. The practice indicates that the stope mining indexes obtained by this method are reliable and can be used in actual production management and mining quality appraisal.