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辐射井的渗流系复杂的三维流,目前其出水量的确定尚无较准确的理论计算方法,如何确定其抽水的降落曲面是理论计算和工程实践中需要解决的问题。本文根据辐射井抽水试验降落曲线的特点,建立了单层辐射管均匀布设的辐射井抽水降落曲面方程,利用该方程可计算出任一抽水时刻的影响半径及空间任一点的水位高度。最后通过实例验证,表明模型计算结果与实测数据吻合较好,可较真实地反映辐射井抽水时地下水的分布情况。
The seepage flow in the radial well is a complex three-dimensional flow. At present, there is no accurate theoretical calculation method for determining the amount of water discharged. How to determine the landing surface of the pumping well is a problem to be solved theoretically and engineering practice. In this paper, according to the characteristics of the landing curve of the radiation well pumping test, the equation of the pumping surface of the radiant well uniformly distributed by the single-layer radiant tube is established. By using this equation, the influence radius at any pumping time and the water level at any point in the space can be calculated. Finally, an example is given to verify that the calculated results of the model are in good agreement with the measured data, which can more accurately reflect the distribution of groundwater in radial well pumping.