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;F_3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F_3为导水断层且连通了海水,受采动的影响,F_3断层周围的导水通道错综复杂且不稳定。
The study area,Sanshandao gold mine,is the first coastal mine in China.It belongs to structural fissure water-filled mine,and the hydrogeological conditions are complicated.With the mining of the orebody,multiple water inrush accidents occurred in the shallow and deep parts of the mine,causing the partial roadway to be flooded,and even some sections were accompanied by sand erosion.Water inrush caused by coastal mining is an extreme threat to the safe production of the mine.Therefore,it is important to determine the mine water mixing ratios and analyze its evolutionary law for the prevention of water inrush accidents.The power-law rule is a general law shown in the occurrence of geological disasters in nature.It refers to the relationship between the frequency and the scale of disasters.The frequency of large-scale disasters is low.Conversely,disasters with a high frequency of occurrence are relatively small in scale.To determine the measure of the proportion of seawater,the power-law rule was applied to the statistical analysis of the mixing ratios of the mine water in this study area.Firstly,the results of two existing mixing ratio studies were statistically sorted out,and the probability density statistical results of seawater fluctuation events were obtained.Then,the probability density function p(S)was used to fit the fluctuation events of the seawater ratio in two adjacent monitoring periods.Finally,by integrating the fitted curve,the early warning interval of seawater fluctuation value was obtained.The research results show that the correlation coefficients of the fitting reach 0.92 and 0.93,respectively.It indicates that the distribution of the interval mean value and probability density of seawater proportional fluctuation events conformed to the power-law distribution.Thus,it is credible to use the power-law rule to analyze the mixing ratio of the mine water in the study area.For the mixing ratios obtained by different methods,the law reflected under the power law rule is the same.The fluctuation values
作者
段学良
马凤山
郭捷
惠鑫
顾鸿宇
王善飞
DUAN Xueliang;MA Fengshan;GUO Jie;HUI Xin;GU Hongyu;WANG Shanfei(Key Laboratory of Shale Gas and Geoengineering,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;Innovation Academy for Earth Science,Chinese Academy of Sciences,Beijing 100029,China;University of Chinese Academy of Sciences,Beijing 100049,China;Beijing Infrastructure Investment Co.,Ltd.,Beijing 100101,China;Chengdu Center,China Geological Survey,Chengdu 610081,Sichuan,China;Sanshandao Gold Mine,Shandong Gold Mining(Laizhou)Company Limited,Laizhou 261442,Shandong,China)
出处
《黄金科学技术》
CSCD
2021年第1期99-107,共9页
Gold Science and Technology
基金
国家自然科学基金重点项目“海底采矿对地质环境的胁迫影响与致灾机理”(编号:41831293)
国家自然科学基金青年项目“基于‘盲源分离’的矿山突水水源识别与混合比研究”(编号:41907174)
国家重点研发计划专题“黄渤海不同类型海岸带海水入侵发生机理研究”(编号:2016YFC0402802-01)联合资助。
