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一、关于灾害根源与治理方向水少沙多是黄河的特点,也是灾害的根源。洪水并不可怕,灾害威胁在于河床高于地面及严重的淤积抬高趋势。而水少沙多正是淤积抬高的主导因素。针对沙多、淤积严重这一情况,张宗祐同志提出中游治理与下游治理并重,前者为了减少泥沙来源,后者为了减少河道淤积,两者相辅相成,缺一不可。中游治理措施主要是水土保持,下游治理目的在于增加排沙能力。当前的设想是利用水沙运行规律,调整
First, on the root causes of the disaster and the direction of governance Water less sand and more the characteristics of the Yellow River, but also the root causes of disasters. Floods are not terrible, and the threat of disasters lies in the tendency of the riverbed to rise above the ground and serious siltation. Less water and more sediment deposition is the leading factor. In the case of Sado and siltation, Comrade Zhang Zongyou put equal emphasis on the middle and lower reaches of the country. The former, in order to reduce the source of sediment, the latter in order to reduce the siltation of the river, are mutually reinforcing and indispensable. The middle reaches of the main control measures are soil and water conservation, downstream management aims to increase sediment capacity. The current assumption is to use the law of water and sediment to adjust