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Calculation on Field Drain Spacing under the Influence of Evaporation

机译:蒸发影响下场漏间距的计算

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Evaporation has more influences on field drain project,the function V of phreatic drop in velocity which is assumed at first is expanded by Taylor formula in the paper,through optimum fit to the expend function took the former trinomial and former quadrinomial,the drain calculating formulas are gained.It is used to calculate two kind soils' field drain spacing,comparing with calculatingdatum has been tested,the precision is better.The results show that compare to under the condition of drain only,the field drain spacing will enlarge 14.35~30.76m under the influence of evaporation;the phreatic evaporation has more influences on drain spacing.
机译:蒸发对田间排水工程有较大影响,本文首先采用泰勒公式扩展了假设的潜水速度降函数V,通过对拟合函数的最佳拟合,采用了前三项式和前四项式,计算了排水量用于计算两种土壤的田间排水间隔,与计算基准相比,精度更高。结果表明,与仅在排水条件下相比,田间排水间隔增大了14.35〜30.76。 m在蒸发的影响下,潜水蒸发对排水间距的影响更大。

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