摘要
在矿山实际生产过程中,涌水量精确预测具有重要意义。为解决预测值准确度不够的问题,运用大井法和地下水模型系统(groundwater modeling system, GMS)数值模拟方法进行某矿坑涌水量双重预测对比分析。采用地下水动力学大井法的承压转无压公式得出最大降深平均涌水量为47 948 m^(3)/d,最小降深平均涌水量为46 501 m^(3)/d;使用GMS数值模拟软件得出矿坑平均涌水量为32 000 m^(3)/d,最大涌水量为38 000 m^(3)/d。对二者结果进行对比分析表明,大井法预测公式是在含水层水平、等厚、均质等严格条件下推导出来的,但矿山实际上并没有完全满足公式的前提条件,其预测结果将会偏大;数值模拟方法适应性强,预测精度高,已经被大量应用于各个方面,由该方法得出的数据将会比大井法得出的数据范围小且更为精确。双重预测方法得出该矿坑涌水量的大范围和小范围预测值,结果表明该矿坑涌水量较大,研究成果将为开采矿山提供技术支撑。
Accurate prediction of water inflow is of great significance in the actual production process of mines.In order to solve the problem of numerical prediction is not accurate enough,the big well method and groundwater modeling system(GMS)numerical simulation method were used to carry out a mine pit surge water double prediction comparison analysis.Using the pressure to no pressure formula of groundwater dynamics large well method,the maximum average water inflow of drawdown is 47948 m^(3)/d,and the minimum average water inflow of drawdown is 46501 m^(3)/d.Using GMS numerical simulation software,the average water inflow of the mine pit is 32000 m^(3)/d,and the maximum water inflow is 38000 m^(3)/d.The comparative analysis of the two results shows that the prediction formula of the large well method is derived under strict conditions such as aquifer level,equal thickness and homogeneity.However,in reality,mines do not fully meet the prerequisite conditions of the formula,and their prediction results will be too large.The numerical simulation method has strong adaptability and high prediction accuracy,and has been widely applied in various aspects,and the data derived from the method will be more accurate than that of the large well method.The numerical modelling method is highly adaptable and has been used in a number of ways,and the data derived from this method will be less extensive and more accurate than that derived from the large well method.The dual prediction method yields a large and small range of predicted values for the pit's water influx,and the results show that the pit's water influx is indisputably large,and the research results will be used as technical support for the mine.
作者
孙刚友
胡清珍
康钦容
夏缘帝
袁威
张卫中
SUN Gang-you;HU Qing-zhen;KANG Qin-rong;XIA Yuan-di;YUAN Wei;ZHANG Wei-zhong(The Fourth Research and Design Engineering Corporation,Shijiazhuang 050021,China;School of Resources and Safety Engineering,Wuhan Institute of Technology,Wuhan 430073,China)
出处
《科学技术与工程》
北大核心
2023年第21期9024-9031,共8页
Science Technology and Engineering
基金
国家自然科学基金(52174086)。
关键词
水文地质
矿坑涌水量
大井法
GMS
数值模拟
hydrogeology
mine water inflow
large well method
GMS
numerical simulation
