论文部分内容阅读
一、前言丹江口水库自1967年11月至今,已蓄水运用16年。16年来,水库在综合利用方面,已取得显著效益。丹江口水库为丹、汉两江并联水库,运用以来,入库的泥沙,大部分淤在汉江库区,且分布不均,下段库容大,淤积少,中上段库容小,淤积多。根据淤积发展,需要采取拉沙措施,以发挥水库长期的综合利用效益。本文简要的分析了16年来库水位调度中,汉江库区沿程冲淤分布的特点,在此基础上,对本库的拉沙调度作了初步的分析探讨。水库在淤积阶段中,来水来沙在沿程的冲淤及淤积物分布等特点,是受制于库水位的调度。如在水库的调度中,只重视调水,而忽视调沙,则调度会引起淤积
I. Preface Danjiangkou Reservoir has been used for 16 years since November 1967. Over the past 16 years, the reservoir has achieved significant benefits in terms of comprehensive utilization. Since Danjiangkou Reservoir is a parallel reservoir of Danjiang River and Hanjiang River, most of the sediment deposited in the reservoir is unevenly distributed in the Hanjiang River reservoir area. According to the development of sedimentation, the need to take pull measures to play a long-term comprehensive utilization of reservoir efficiency. This paper briefly analyzes the distribution of erosion and deposition in the Hanjiang River reservoir area during the 16-year reservoir water level dispatch, and based on this, makes a preliminary analysis of the Lassa dispatching in this reservoir. In the sedimentation stage of the reservoir, the characteristics of scouring and deposition of silt and sediment along the route and the distribution of sediment are the schedules subject to the reservoir water level. As in the reservoir dispatch, only pay attention to water diversion, while neglect sand, the dispatch will cause siltation