黄金科学技术 ›› 2021, Vol. 29 ›› Issue (4): 525-534.doi: 10.11872/j.issn.1005-2518.2021.04.010
Yue JING1(),Shaofeng WANG1,Jintao LU2()
摘要:
非爆机械化开采的可行性与待截割矿体周围松动区的厚度之间有着密切联系,研究待截割矿体周围松动区厚度对于合理进行机械化开采具有重要意义。综合考虑松动区厚度的成因及特点,选取了单轴抗压强度、岩体质量等级、埋深、岩石容重和开挖跨度5个影响因素作为指标。首先利用从多个矿山现场收集的69组数据,建立了松动区厚度的回归预测模型,并通过熵权法评价5个影响因素对于松动区厚度的影响权重;然后根据所得的松动区厚度预测模型对开磷马路坪矿开采现场松动区厚度进行预测,并依此建立了基于矿岩开挖松动区厚度的非爆机械化开采判据;最后对现阶段开磷马路坪矿非爆机械化开采的可行性进行评价。结果表明:本研究得到的基于矿岩开挖松动区厚度的非爆机械化开采判据,可以较好地评判开磷马路坪矿非爆机械化开采的可行性和合理性。
中图分类号:
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