基于大井法和地下水模型系统数值模拟方法的某矿坑涌水量预测对比分析
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TD742

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国家自然科学基金项目(面上项目,重点项目,重大项目)


Comparative analysis of water inflow prediction of a mine based on large well method and GMS numerical simulation method
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    摘要:

    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,本文运用大井法和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47948m3/d,最小降深平均涌水量为46501m3/d;使用GMS数值模拟软件得出矿坑平均涌水量为32000m3/d,最大涌水量为38000m3/d。对二者结果进行对比分析: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是不争的事实,研究成果将为开采矿山提供技术支撑。

    Abstract:

    Abstract: The actual production process of the mine, the amount of water surge is accurately predicted with important significance. In order to solve the problem of numerical prediction is not accurate enough, this paper uses the big well method and GMS numerical simulation method to carry out a mine pit surge water double prediction comparison analysis. The use of groundwater dynamics "big well method" of the pressurised to unpressurised formula: derived from the maximum drop depth average surge of 47,948m3/d, the minimum drop depth average surge of 46,501m3/d; the use of GMS numerical simulation software derived from the pit average surge of 32,000m3/d, the maximum surge of 38,000m3/d. The two results were compared and analysed and the following conclusions were reached: the prediction formula of the large well method is derived under the strict conditions of aquifer level, equal thickness and homogeneity, but the mine actually does not fully meet the prerequisites of the formula, and its prediction results will be large; the numerical simulation method is highly adaptable and has been applied to a large number of aspects with high prediction accuracy, and the data derived from this 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.

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孙刚友,胡清珍,康钦容,等. 基于大井法和地下水模型系统数值模拟方法的某矿坑涌水量预测对比分析[J]. 科学技术与工程, 2023, 23(21): 9024-9031.
sungangyou, Hu Qingzhen, Kang Qinrong, et al. Comparative analysis of water inflow prediction of a mine based on large well method and GMS numerical simulation method[J]. Science Technology and Engineering,2023,23(21):9024-9031.

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历史
  • 收稿日期:2022-05-18
  • 最后修改日期:2023-05-08
  • 录用日期:2023-03-15
  • 在线发布日期: 2023-07-25
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