基于数值模拟的矿井涌水量预测研究-以广东省阳山某矿区为例
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摘要
为了定量分析矿区矿井涌水量,通过建立矿区的地下水流三维数值模型,模拟了各开采时段的矿坑涌水量及地下水渗流场。计算表明:矿井总涌水量中位数、第三四分位数、最大值分别为2408 m~3/d、2618 m~3/d、3244 m~3/d,矿区1片区降落漏斗带无敏感点分布,而2片区降落漏斗带存在敏感点(约60 m),尤其下部巷道开采期间,敏感点处地下水位降可达30 m左右,故该区域应加强地下水动态监测,防止环境水文地质问题发生。
In order to quantitatively analyze the mine water inflow, a three-dimensional numerical model of groundwater flow was established to simulate the mine water inflow and seepage field of groundwater in each mining period. The calculation shows that the median of the total mine water inflow is 2408 m3/d, the third quartile is 2618 m3/d, the maximum value is 3244 m3/d. There are no sensitive points in the falling funnel zone of one mining area, while there are sensitive points in the two areas(about 60 m), especially in the mining period of the lower roadway. It can reach about 30 m, so the monitoring of groundwater regime should be strengthened to prevent the occurrence of adverse environmental hydrogeological problems.
In order to quantitatively analyze the mine water inflow, a three-dimensional numerical model of groundwater flow was established to simulate the mine water inflow and seepage field of groundwater in each mining period. The calculation shows that the median of the total mine water inflow is 2408 m3/d, the third quartile is 2618 m3/d, the maximum value is 3244 m3/d. There are no sensitive points in the falling funnel zone of one mining area, while there are sensitive points in the two areas(about 60 m), especially in the mining period of the lower roadway. It can reach about 30 m, so the monitoring of groundwater regime should be strengthened to prevent the occurrence of adverse environmental hydrogeological problems.
引文
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[2]Wang Wei,Zhang Ge.Numerical simulation of groundwater flowing to horizontal seepage wells under a river[J].Hydrogeology Journal,2007,15(6):1211-1220.
[3]孔逊,龙庆.老挝龙湖钾盐矿矿区水文地质及工程地质特征[J].矿产与地质,2015(2):261-266.
[4]吴雯倩,靳孟贵.淮北市地下水流数值模拟及水文地质参数不确定性分析[J].水文地质工程地质,2014(3):21-28.
[5]吴孔军,李平,郭会荣,等.区域地下水流对王河煤矿水害影响数值模拟[J].工程勘察.2011,7:41-45.
[6]王军,容玲聪,安庆铜矿地下水渗流场的模拟[J].矿业研究与开发.2004,24(6):25-27.
[7]曹剑锋,迟宝明,王文科等.专门水文地质学(第三版)[M].北京:科学出版社.2006.
[8]郑春苗,贝聂特著,孙晋玉等译.地下水污染物迁移模拟(第二版)[M].北京:高等教育出版社,2009.
[9]郭东屏,宋炎勋,钱会等.地下水动力学[M].西安:陕西科学技术出版社.1994.
[10]Zhu W C,Wei C H.Numerical simulation on mining-induced water inrushes related to geologic structures using a damage-based hydromechanical model[J].Environmental Earth Sciences,2011,V62(1):43-54.