| 低洼地区农田淹没成因分析方法及应用－（II）洪水反演和分析 |
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| 引用本文： | 姚志坚,方神光,陈文龙.低洼地区农田淹没成因分析方法及应用－（II）洪水反演和分析[J].中国农村水利水电,2012,0(3):154-156. |
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| 作者姓名： | 姚志坚 方神光 陈文龙 |
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| 作者单位： | 珠江水利委员会珠江水利科学研究院,广州,510610 |
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| 摘 要： | 为探求从化市水南村部分农田被淹没的主要原因，本文对水南村所在小流域的降雨资料和涌容关系进行了分析。在对流溪河洪水特性和牛心岭电站操作对淹没位置河段水位影响分析的基础上，真实反演出了部分农田被淹没的过程。结果显示，在不考虑淹没区涵洞排水的条件下，采用大坳站和太平场站的平均雨量资料，本次降雨造成淹没区的水位上涨幅度可达2.74 m；淹没区水位经历了两次上涨，第一次主要由产汇流太急造成涵洞排水不及造成，第二次主要是流溪河洪水上涨造成涵洞无法排水所致。未封堵暗渠导致了流溪河洪水倒灌入淹没区，造成最大淹没深度为0.23 m；牛心岭电站操作对淹没区影响较小。
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| 关 键 词： | 二维水流数学模型 混合有限分析法 洪水反演 淹没 |
| 收稿时间： | 2010-12-21 |
| 修稿时间： | 2011-09-01 |
The Method of Analyzing Reasons of Flooded Farmland in Low-lying Areas and its Application-(II) Flood Routing and Analysis |
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| Abstract: | In order to find out main reasons leading to inundation of part of farmland in Shuinan village in Conghua City, hydrological data in the little basin and capacity-elevation relation of inundated area were analyzed. Based on results about the effect of flood in Liuxi River and Niuxinling Power Station downstream on water levels of the reach at inundated area, flood inversion was achieved distinctly. Rising extent of water level at inundated area can reach 2.74 m by using average rainfall data recorded respectively at Daao and Taipingchang station without taking into account of drainage by culverts. Water level rising in inundated area experienced two times while the first was caused by no enough discharge capacity of culverts compared with hurry runoff and another was flood reaching in Liuxi River leading to no discharge from culverts. Part of flood water in Liuxi River entered into inundated area from the unblocked culvert and lead to a maximum extra water level rising of about 0.23 m, while contribution of Niuxinling Power Station downstream was rather little. |
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| Keywords: | two-dimensional mathematical model hybrid finite analytic method flood inversion inundated |
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