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采矿程序回采 B-Neath矿带用上向分段充填采矿法回采,此法也用于B-North和B-4矿带的开采。一步采场从该矿带底部向顶部交替回采,而中间的矿柱作为二步采场回采。采场用在采区的顶、底部从主平巷掘进的横穿矿体的横巷进行采准。所有平巷的掘进循环中,在良好岩层中的最终爆破的炮眼组以及不良岩层的最终爆破炮眼组和周边炮眼组内,均使用切边炸药(trim powder)爆破。拉底巷道通常开凿至遇到剪切带时止,以便从出矿样
Mining Procedure B-Neath mining back to the sub-section mining method of mining recovery, this method is also used for B-North and B-4 ore mining. One-stope stope alternately mines from the bottom of the ore belt to the top, while the middle ore pillar recovers as a two-stope stope. Stope used in the mining area at the top, bottom from the main roadway heading through the cross-lane mining mining standards. Trimming powder blasting was used in all lane heading cycles, in the final blasting shothole group in a good rock formation, and in the final blasting shothole group and surrounding shothole groups in a bad rock formation. Bottom lanes are usually drilled until they meet the shear zone so that they can be removed from the mine