羊拉铜矿里农矿段采场回采顺序优化研究

Optimization Study on the Stoping Sequence of Linong Ore Section of Yangla Copper Mine

结合羊拉铜矿里农矿段采用空场采矿法的工程实际情况,利用三维有限元数值分析方法,对高程和平面2个维度方向的采场回采顺序进行研究,分析矿体回采过程中围岩产生的应力值、位移量和塑性区大小。结果表明,在高程维度上采用自上而下的回采顺序较优;在平面维度上采用中间向两翼的回采顺序较优。研究结果可为羊拉铜矿里农矿段矿体的安全高效开采提供一定理论指导。

The open stope mining method is used in Linong ore section of Yangla Copper Mine, based on the engineering actual situation, the finite three-dimensional numerical simulation analysis method is adopted, the stoping sequence is studied from the directions of elevation and horizontal so as to analyze the stress value, displacement and plastic zone of the surrounding rock during the stoping process. The results show that in elevation dimension the stoping sequence from top to bottom is optimal; in horizontal dimension the stoping sequence from the middle to the wings is good. The above study results can provide theoretical reference for the safety and efficiency mining of Linong ore section of Yangla Copper Mine.