汉江丹江口至襄阳河段水量平衡问题的调查分析

Research and Analysis on Water Volume Balance in Hanjiang River's Branch between Danjiangkou and Xiangyang

丹江口～襄阳河段的水量平衡问题关系着南水北调中线工程水源地丹江口水库可调水量计算.通过对该河段支流南河金盆沟水电站建成前后开峰峪水文站与谷城水文站年径流量变化情况的调查分析,定量计算金盘沟水电站运行后对南河的引水水量,进而估算出对丹江口～襄阳河段水量平衡问题的影响程度.提出根据汉江干支流水利开发的需要完善水文站网,提高流量测验精度.

Water volume balance between Danjiangkou and Xiangyang branch plays an important role in calculating dispatchable water volume of Danjiangkou reservoir, water source of middle line part of Sending southern water to North Project. Through research and analysis on the annual runoff differences in the Kaifengyu hydrology station and Gucheng Hydrology station in the sub-branch Nanhe river before and after the Jinpengou Water Power Plant was built is calculated quantitatively and furthermore the influence on water volume balance between Danjiangkou and Xiangyang can be estimated. It is suggested that the hydrologic network should be bettered in accordance with the needs of exploitation so that the measuring precision can be improved.