青草沙避咸蓄淡水库库容与特征水位研究

Study on storage capacity and characteristic water level for Qingcaosha Reservoir

青草沙水库具有规模大、地理位置特殊、地形、水动力条件及咸潮入侵规律复杂等特点。综合考虑工程特点,在分析研究规划水平年供水规模、供水保证率、原水含氯度标准、咸潮期含氯度变化过程与最长不宜取水天数、水库蓄水方式等关键控制因素基础上,阐述了水库库容与特征水位的论证思路、多方案技术经济比较和研究结论。

Qingcaosha Reservoir is a large scale reservoir with the characteristics of special geographic location,complicated topographical and hydrodynamic conditions,intricate law of saltwater intrusion,etc.Under the comprehensive consideration on the characteristics of the project,the demonstration concepts of both the storage capacity and characteristic water level as well as the techno-economic comparison and study conclusion of the multi-scheme are described herein on the basis of the analysis on the key controlling factors such as the water supply scale,guarantee ratio,standard of chlorine content in the raw water,changing process of the chlorine content during the salt tide period,the longest duration that is unfaverable to take water and the storage mode etc.