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首页> 外文期刊>Agricultural Engineering International: CIGR Ejournal >Determination of surface drainage coefficient - a case study of Doimukh (Arunachal Pradesh), India
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Determination of surface drainage coefficient - a case study of Doimukh (Arunachal Pradesh), India

机译:地表排水系数的确定-印度Doimukh(阿鲁纳恰尔邦)的案例研究

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In this study, 1 day to 7 consecutive days annual maximum rainfall was predicted at various return periods using probability distribution functions for Doimukh (Arunachal Pradesh), India. Basic infiltration (Ib) rate value was estimated 10 mm hr-1 for the agricultural field having sandy soil. The drainage coefficient was estimated for 5, 10, 20 and 25 years R.I. by subtracting basic infiltration rate from estimated consecutive day rainfall. For the study area, the maximum value of drainage coefficient at 25 years recurrence interval varied from 41.37 mm day-1 to 304.23 mm day-1 for 2 to 7days consecutive rainfall. The minimum value of drainage coefficient at 5 years interval varied from 0 to 212.30 mm day-1 for 2 to7days consecutive rainfall. Study concluded that sandy soil of Doimukh (Arunachal Pradesh) having basic infiltration rate 10 mm hr-1 had to be provided with agricultural drainage for its major crops grown in the area.
机译:在这项研究中,使用印度Doimukh(Arunachal Pradesh)的概率分布函数,预测了在各个返回期连续1天至7天的年最大降雨量。对于具有沙土的农田,基本渗透率(Ib)速率值估计为10 mm hr-1。通过从估计的连续日降雨中减去基本入渗率,可以估算出R.I. 5、10、20和25年的排水系数。对于研究区域,连续2至7天的降雨,在25年重复间隔内的排水系数最大值从41.37 mm第1天到304.23 mm第1天变化。连续2至7天的降雨,每5年间隔的排水系数最小值在0至212.30 mm 1天之间变化。研究得出的结论是,基本渗透速率为10 mm hr-1的Doimukh(阿鲁纳恰尔邦)的沙土必须为其该地区的主要农作物提供农业排水。

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