Degradation of the South Saskatchewan River below Gardiner Dam
Degradation of the South Saskatchewan River below Gardiner Dam
复制标题
加德纳大坝以下南萨斯喀彻温河的退化
DOI：
10.1139/l85-098
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发表时间：
1985
影响因子：
1.4
通讯作者：
R. Halliday
中科院分区：
文献类型：
--
作者：
V. Galay;R. S. Pentland;R. Halliday
在南萨斯喀彻温河上建造加德纳大坝导致大量泥沙滞留在水库内，造成大坝以下河床的一些退化。对大坝关闭后收集的横截面和沉积物数据的分析表明，大坝下游的平均河床水位下降了2米（6.5英尺），河床开始铠装（变得粗糙）。 退化已经在大坝下方约8公里（5英里）处进行。 自大坝运行以来，河道格局没有发生明显变化，河流变得更加稳定，尤其是萨斯卡通上游的下游。使用美国陆军工程兵团HEC-6沉积物模型进行的详细计算表明，到2001年，总退化可能约为5.3 m（13.8 ft）。 计算机模型还证实，高洪水释放可能导致已经发生的退化大幅增加。关键词：河势，水动力
The construction of Gardiner Dam on the South Saskatchewan River has resulted in the trapping of substantial sediment loads within the reservoir, causing some degradation of the riverbed below the dam. Analysis of cross-section and sediment data collected since the closure of the dam indicates that the average bed level has dropped 2 m (6.5 ft) downstream of the dam and that the bed has started to armour (become coarser). The degradation has progressed approximately 8 km (5 mi) below the dam. The pattern of the river channel has not altered significantly and the river has become more stable since the operation of the dam, especially in the lower reach just above Saskatoon.Detailed computations using the U.S. Army Corps of Engineers HEC-6 sediment model indicate that, by the year 2001, total degradation may be about 5.3 m (13.8 ft). The computer model also verifies that a high flood release could result in a substantial increase to the degradation that has already taken place. Key words: river behaviour, d...