三峡水库运行调度对长江口水源地安全的影响分析

Influence of Three Gorge Reservoir Operation on Water Source Safety in Yangtze River Estuary

长江口是上海的重要供水水源地,其供水安全保障度往往受制于长江上游来水的变化。自然状态的流域枯水季节咸潮上溯,常常造成上海供水困难。三峡水库建成后的蓄水及其运行调度方式,使长江口水源地咸潮入侵规律发生了明显变化,成为影响长江口水源地安全的重要因素。全面分析了三峡水库运行调度对长江口水源地的影响,总结了多年来长江口咸潮入侵的变化规律,并提出了减缓长江口咸潮入侵影响的对策建议。

Yangtze River estuary is an important water source for Shanghai. The safety of water supply is often affected by changes in upstream water of Yangtze River. Natural salt water intrusion in dry season often results in difficulties with water supply in Shanghai. After the completion of the Three Gorges Reservoir, the storage and operation significantly change salt water intrusion in the water source area. It becomes the most important factor affecting the water source safety in Yangtze River estuary. The influence of Three Gorges Reservoir operation on water source safety in Yangtze River estuary is comprehensively analyzed. The law of salt water intrusion in Yangtze River estuary is summarized, and some suggestions for alleviating negative impact are made.