环江流域90年代水沙变化研究及治理方略探讨  

Water and Sediment Variations of Huanjiang River Basin in 1990s and Discussion on Its Controlling Methods

作　　者：冉大川[1] 吴永红[1] 寇权[1] 

机构地区：[1]黄河水利委员会西峰水土保持科学试验站

出　　处：《中国水土保持科学》2004年第2期6-11,共6页Science of Soil and Water Conservation

基　　金：水利部第 2期黄河水沙变化研究基金项目"泾河流域水土保持措施减水减沙作用分析

摘　　要：根据实测水文资料 ,对泾河 2级支流环江流域 2 0世纪 90年代水沙变化进行了较为深入的分析和研究 ,利用 3种方法计算环江流域 90年代综合治理的减洪减沙效益 ;分析了流域地下径流补给变化情况 ,估算了流域地表水资源利用率 ;对环江流域水资源开发利用及今后治理方略进行了探讨。研究结果表明 :进入 90年代后 ,环江流域最大 2 4h降雨量明显增大 ,径流、泥沙大幅度增加 ,单位 (mm)有效降雨产洪产沙量为 4个阶段的最大值。流域综合治理措施减洪减沙作用减弱 ,地下径流补给情况有所好转 ,地表水资源利用率不高。据此提出了环江流域综合治理的总方略 。Based on surveyed hydrologic data, the water and sediment variations in 1990s (from 1990 to 2000) of Huanjiang river basin were deeply analyzed and studied, which is the second level branches of Jinghe river. Taking three methods, the reduction benefits of flood and sediment by integrative measures were calculated, the variation of the underground water supply was analyzed, the utilization rate of the surface water resources in basin was estimated, and the general plan of exploring of water resources and controlling of Huanjiang river basin was discussed. The results showed that since 1990 the maximum precipitation in 24 hours had increased evidently, runoff and sediment had increased by a big margin, and the effective precipitation per mm contributing to flood and sediment had been the highest in four periods. The roles for reduction of flood and sediment by integrative measures reduced, the underground water supply increased, and the utilization rate of surface water was low. Accordingly, a general plan of integrative control was given, which can be used to consult for the eco environment construction of soil and water conservation in Huanjiang river basin.

关 键 词：环江流域 90年代 水沙变化 治理方略 水资源 

分 类 号：S157[农业科学—土壤学] TV213.4[农业科学—农业基础科学]