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数值模拟法是进行地下水资源计算与评价的有效方法,但实际工作中由于抽水井井损的存在,为模拟工作增加了难度,而井损值的准确性直接影响到模型对抽水井运行后水位动态预测结果的精度。该文所采用方法回避了求取井损值这一问题,而是通过调整抽水井所在均衡单元的含水层渗透系数(K)或给水度(μ)对井损值进行模拟。该方法既省去了求取井损值的工作量,又避免了因井损值误差而导致预报结果不准确的问题。经实践验证,该方法实用性较强。
Numerical simulation method is an effective method to calculate and evaluate groundwater resources. However, due to the existence of well damage in pumping wells, it is more difficult to simulate the actual work, and the accuracy of well damage value directly affects the water level Accuracy of dynamic prediction results. The method adopted in this paper avoids the problem of obtaining the well damage value. Instead, the well damage value is simulated by adjusting the aquifer permeability coefficient (K) or water supply (μ) of the equilibrium cell where the well is located. The method not only eliminates the workload of obtaining well damage value, but also avoids the problem of inaccurate forecast result due to error of well damage value. The practice proved that the method is more practical.