万安水库提高运行水位可行性研究

摘要

Since the completion of Wan'an Reservoir in 1993, it has always been operated by the initial operation scheme due to the limitation of inundation in the reservoir area and downstream flood control etc. , so the benefits of flood control, power gen-eration, irrigation and navigation have not been fully realized, and the operation condition of the power station in flood season is deteriorated. At present, the flood control condition in the downstream of Wan 'an Reservoir has been improved greatly, which creates a condition for raising the operation level of reservoir. Aiming to 3 schemes of raising water level, the feasibility is re-searched from the aspects of power generation improvement, investment for inundation treatment in the reservoir area, navigation channel improvement. The research results show all 3 schemes can achieve good economic benefits if the co-investment is real-ized by benefited departments and a reasonable operation level is determined. It is suggested that the downstream flood control de-mand be further studied to realize the maximum benefit of Wan'an reservoirs.%由于受库区淹没处理、下游防洪等诸多因素制约,万安水电站于1993年建成后一直按初期运行方案运行,不仅无法充分发挥水库防洪、发电、灌溉和航运效益,还恶化了电站的汛期运行条件。目前,万安水库下游防洪条件已经得到较大改善,为提高万安水库运行水位创造了条件。针对拟定的提高万安水库运行水位的3种方案,从发电效益改善,库区淹没处理投资,航道改善等方面进行了可行性分析。结果表明,恰当确定水库运行水位,加上受益行业共同投资,3种方案都能获得较好的经济效益。建议进一步从下游防洪要求方面开展深入研究,尽早实现水库效益最大化。