| 人工集水面临界产流降雨量确定实验研究 |
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| 引用本文： | 李小雁,龚家栋,高前兆.人工集水面临界产流降雨量确定实验研究[J].水科学进展,2001,12(4):516-523. |
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| 作者姓名： | 李小雁 龚家栋 高前兆 |
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| 作者单位： | 中国科学院寒区旱区环境与工程研究所, 甘肃, 兰州, 730000 |
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| 基金项目： | 国家自然科学基金项目(40101004). |
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| 摘 要： | 通过在中国科学院寒区旱区环境与工程研究所皋兰生态农业试验站1998-1999年的降雨-径流观测实验,利用直线回归模型确定包括自然集水面在内的9种人工集水面的临界产流降雨量值(降雨阀值)。结果表明:在不受前期降雨影响下,自然黄土坡面、清除杂草自然黄土坡面和粘土夯实集水面的临界产流降雨量分别为8.5mm,8.0mm和4.1mm。在受前期降雨影响下,其临界产流降雨量分别为6.0mm,5.0mm和1.9mm。塑料膜、油毡、沥青和混凝土处理集水面的产流过程受降雨量和降雨强度的影响小,平均状态下其临界产流降雨量为0.1～1.5mm。塑料膜、油毡、沥青、塑料+小砾石和塑料+大砾石集水面的临界产流降雨量分别为0.13mm,0.21mm,0.17mm,0.98mm和0.85mm。混凝土集水面在干燥情况下的临界产流降雨量为1.48mm,在不干燥情况下的临界产流降雨量为1.16mm。
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| 关 键 词： | 人工集水面 临界产流降雨量 雨水集流 |
| 文章编号： | 1001-6791(2001)04-0516-08 |
| 收稿时间： | 2000-09-04 |
| 修稿时间： | 2000年9月4日 |
Experimental Study on Threshold Rainfall Determination for Artificial
Rainwater-Harvesting Catchments |
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| LI Xiao-yan,GONG Jia-dong,GAO Qian-zhao.Experimental Study on Threshold Rainfall Determination for Artificial
Rainwater-Harvesting Catchments[J].Advances in Water Science,2001,12(4):516-523. |
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| Authors: | LI Xiao-yan GONG Jia-dong GAO Qian-zhao |
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| Institution: | Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
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| Abstract: | Based on the rainfall-runoff observations under the natural rainfall at the Gaolan Research Station of Ecology and Agriculture, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, in 1998-1999, the threshold rainfall values for 9 rainfall-harvesting catchments were determined by the linear regression model.The results indicated that: (1) the threshold rainfalls were 8.5mm, 8.0mm and 4.0mm under the no effect of the antecedent rainfall for the natural loess slope catchment, slope clearing catchment and compacted clay catchment, respectively, and (2) the threshold rainfalls were 6mm, 5.0mm and 1.9mm under the effect of the antecedent rainfall conditions, respectively.The threshold rainfall for the plastic film, the asphalt felt, the asphalt sprayed cat chment, the ‘big' pebble covered (7-14 cm in diameter) film and the "small" pebble-covered (2-6 cm in diameter) film catchments were 0.13mm, 0.21mm, 0.17mm, 0.98mm and 0.85mm, respectively.The threshold rainfall for the concrete cat chments is 1.48mm without the effect of the antecedent rainfall effect and 1.16mm with the antecedent rainfall effect. |
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| Keywords: | Artificial catchments threshold rainfall rainwater harvesting |
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