黄金科学技术 ›› 2019, Vol. 27 ›› Issue (3): 406-416.doi: 10.11872/j.issn.1005-2518.2019.03.406
• 采选技术与矿山管理 • 上一篇
段学良1,2,3(),马凤山1,2(),赵海军1,2,郭捷1,2,顾鸿宇1,2,3,刘帅奇1,2,3
Xueliang DUAN1,2,3(),Fengshan MA1,2(),Haijun ZHAO1,2,Jie GUO1,2,Hongyu GU1,2,3,Shuaiqi LIU1,2,3
摘要:
通过水化学和同位素分析,并利用主成分分析法(PCA)确定了三山岛金矿西山矿区井下巷道的涌水来源为海水、375-20(Mg)、淡水和320-7(Ca),其中375-20和320-7均为基岩水,但其水化学特征明显不同,前者是富Mg型基岩水,而后者是富Ca型基岩水。据此建立了巷道涌水的混合模型,在此基础上结合极大似然法计算得到巷道涌水混合比,分析其演化规律。研究表明:该方法能够有效识别涌水来源,并计算水样混合比;海水在各端元中占比最大,是混合水的主要成分,各期水样海水比例在50%左右波动;海水比例较高的中段为-510 m中段,在此中段处于1660和2230勘探线之间的水点,各期海水比例大于50%,尤其是510-2水样点,海水比例最高达到77%;淡水主要影响范围是-465 m及以上中段;F3断裂带受采动影响较大,其周围的水样点海水比例波动大,需加强对该断裂带的监测。
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