黄金科学技术 ›› 2021, Vol. 29 ›› Issue (1): 99-107.doi: 10.11872/j.issn.1005-2518.2021.01.116
段学良1,2,3(),马凤山1,2(),郭捷1,2,惠鑫4,顾鸿宇5,王善飞6
Xueliang DUAN1,2,3(),Fengshan MA1,2(),Jie GUO1,2,Xin HUI4,Hongyu GU5,Shanfei WANG6
摘要:
滨海采矿引起的突涌水灾害对矿山的安全生产构成了极大威胁,计算巷道涌水的混合比,进一步分析其演化规律对于突涌水事故的防治具有重要意义。将幂律规则应用于三山岛金矿巷道涌水混合比数据的统计分析中,根据2个已有的混合比研究结果,采用概率密度函数p(S)对相邻2个监测周期的海水比例波动事件进行了拟合,拟合的相关系数分别达到0.92和0.93,说明海水比例波动值区间间隔的均值与概率密度的分布符合幂律分布。因此,采用幂律规则对研究区的涌水混合比进行统计分析是可信的。研究结果表明:不同方法得出的混合比,在幂律规则下反映出的规律是相同的;海水比例波动值大于48%的概率小于5%,因此将48%视为预警区间的临界值;F3断层附近的涌水点相对其他监测点海水比值波动较大,这是由于F3为导水断层且连通了海水,受采动的影响,F3断层周围的导水通道错综复杂且不稳定。
中图分类号:
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