Calculation shows that method of minimum residual error is better method to establishment of the discharge drawdown equations, and minicomputer can use simply in calculating process.
计算表明，最小残差法是建立稳定法涌水量经验方程的一种较好方法，计算过程在微机上易于实现。
This paper discusses-the theory and method of deriving the single well Q-S(yield and drawdown) curve using coefficient of permeability from testing and other empirical parameters.
本文探讨了利用测试的渗透系数和其它经验参数推求单孔Q—S（出水量与水位下降）曲线的理论和方法。
The influential factors of calculation error for groundwater table are discussed by using the iteration method to find solution of numerical model in the mine drainage forecast of deep drawdown.
本文讨论了大降深矿井排水预测中 ，利用迭代法求解数值模型时 ，地下水位计算误差的影响因素。
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