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黄河下游输沙水量与来水来沙条件、河床边界条件密切相关。在非汛期,输沙水量随来水量的减少而增大,输沙水量较大,尤其在冬三月,输沙水量很大,还可能造成凌汛威胁,故应对非汛期特别是冬三月水量充分利用;在汛期,输沙水量较小,且随河段来水含沙量的不同而变,汛期的高效输沙洪峰,其来水洪峰平均流量大于2500m ̄3/s,同时不发生大漫滩,含沙量50~120kg/m ̄3,大部分发生在河床经过冲淤调整的8月份。沿程输沙水量随河床沿程冲淤而变,控制输沙水量的关键是在高村以上河段。在现状条件下,输沙水量很难大幅度减少,但仍然可以采取必要措施节约输沙水量,如加强高村以上游荡性河道整治、提高其输沙能力,水库在综合考虑的前提下进行必要的调水调沙等。
Sediment discharge in the lower reaches of the Yellow River is closely related to incoming water and sediment conditions and riverbed boundary conditions. In non-flood season, the amount of sediment transported increases with the decrease of water inflow, and the volume of sediment transported is relatively large. Especially in winter, the amount of sediment transported is very large, which may also cause the threat of flood. Therefore, it is necessary to deal with the non-flood season, Take full advantage of; in the flood season, the volume of sediment transport is small, and with the river sediment concentration varies, the flood peak of high efficiency sediment transport, flood peak average flow is greater than 2500m ~ 3 / s, while not large Floodplain, sediment concentration 50 ~ 120kg / m ~ 3, most occurred in the riverbed after scouring and silting adjustment in August. Along the process of sediment transport along the river bed along the scour and silt changes, the key control of sediment transport in the village above the river. Under current conditions, it is difficult to reduce the amount of sediment to be drastically reduced, but the necessary measures can still be taken to save the amount of sediment transported. For example, the regulation of wandering upper reaches over Gaoyuntao can be improved to increase its sediment transport capacity. Water and sand adjustment.