摘要
主要以黄土高原多沙粗沙区皇甫川流域为例,依据野外实测资料分析了水土保持措施不同类型配置体系下的滞洪减沙效应。提出了"措施配置比"和"流域治理效应与水土保持治理措施类型配置方案有关"的概念。研究结果表明:在水土保持治理措施体系中,若单项措施的配置比不同,措施体系的滞洪减沙作用是不同的;当淤地坝配置比<2%时,流域治理的减沙效益很低;若坝库控制面积小于总流域面积的10%,尽管其它措施的治理度达45%左右,但对于面平均降水量>35mm、最大日降水量>50mm的暴雨洪水,流域治理措施体系的控制作用仍不明显。
Taking Huangfuchuan Basin of the sand-laden and coarse sand areas in the loess plateau as an example mainly, the effect of flood retention and sediment reduction with different allocation system of water-soil conservation measures has been analyzed according to field observed data. The concept of 'Measure allocation ratio' and 'Basin harnessing effect related to typical allocation scheme of water-soil conservation harnessing measures' has been pointed out. The research result shows that if the allocation ratio of single measure is different, the effect of flood retention and sediment reduction of measure system will be different in the water-soil conservation harnessing measures system; when the allocation ratio of desilting dam is lower 2%, the benefit of sediment reduction of basin harnessing is small; if the controlling area of dam-reservoir is about 10% smaller than the total area of the basin, the controlling effect of basin harnessing measure system is not still obvious, though the harnessing degree of other measures is up to 45% or so, the mean precipitation of surface is larger than the storm flood with 35 mm and the maximum daily precipitation is larger than the storm flood with 50 mm.
出处
《水土保持学报》
CSCD
北大核心
2004年第2期28-31,共4页
Journal of Soil and Water Conservation
基金
国家自然科学基金委员会
水利部黄河水利委员会黄河联合研究基金重点项目(编号:50239080)
关键词
水土保持
配置体系
滞洪减沙效应
措施配置比
flood retention and sediment reduction
measure allocation ratio
water and soil conservation
flood
Yellow River
