黄金科学技术 ›› 2020, Vol. 28 ›› Issue (2): 264-270.doi: 10.11872/j.issn.1005-2518.2020.02.030
• 采选技术与矿山管理 • 上一篇
Wei QI1,2(),Wei LI1,Zhenyang LI3,4,Guoyan ZHAO3
摘要:
岩体质量评价结果是地下矿各类工程的重要基础数据。针对影响岩体质量的因素众多,且各因素间模糊性显著的特点,为更准确地评价地下矿岩体质量,提出了一种可定量分析影响岩体质量各因素间模糊性的CRITIC-CW法。选取了岩石质量指标RQD、岩石单轴饱和抗压强度RW、岩体完整性系数Kv、结构面强度系数Kf和地下水渗水量ω共5个指标用于评价地下矿岩体质量。收集了国内外20组岩体质量评价的样本数据,采用CRITIC法计算样本数据的离散性和内在联系,获得了评价指标的权重。采用CRITIC-CW法对20组岩体质量评价样本进行评价,结果误判仅为一例,表明CRITIC-CW法具有较高的准确性和可靠性。采用CRITIC-CW法对三山岛金矿新立矿区部分采场的岩体质量进行评价,结果表明:所评价采场的岩体质量主要为Ⅲ级和Ⅳ级,岩体质量较差,依据岩体质量评价结果,对评价等级为Ⅳ级的采场及周边工程加强支护后,矿区冒落现象显著减少。
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