中山市咸淡水量计算方法及其利用可行性

Calculation Method of Brackish Water Resources and Feasibility Analysis of Its Utilization in Zhongshan City

针对中山市日益加剧的水资源供需矛盾和咸淡水利用率低的问题,基于一维河网区盐度模型,计算分析了中山市咸淡水资源量及其时空分布特征。结果表明,中山市咸淡水资源量较为丰富,年可利用量约54.20×108 m3,其中磨刀门水道与横门水道分别为16.00×108、21.60×108 m3/a,民众镇、南朗镇与板芙镇的咸淡水可利用量分别为14.70×108、10.80×108、6.11×108 m3/a。但咸淡水资源量时空分布较不均匀,且资源利用率较低,仅为4.4%。因此,建议中山市咸淡水可应用到农业灌溉、水产养殖、电厂冷却用水及生活冲厕用水等。研究成果为中山市咸淡水开发利用模式提供参考。

Aiming at the growing contradiction between supply and demand of water resources and the problem of lower brackish water utilization,based on the salinity model of one-dimensional river network area,the paper calculated brackish water quantity and its spatio-temporal characteristics in Zhongshan City.The results show that the brackish water quantity with about 5.42 billion m^3/a which is available is rich in Zhongshan City,among them the available brackish water of Modaomen waterway and Hengmen waterway is 1.60 and 2.16 billion m^3/a respectively.Available brackish water in Minzhong Town,Nanlang Town and Banfu Town is surplus,with a quantity of 1.47,1.08,and 0.611 billion m^3/a respectively.Due to the uneven spatial and temporal distribution of brackish water resources and the lower utilization rate which is only 4.4%,rich brackish water quantity in Zhongshan City can be applied in agricultural irrigation,power generation cooling,aquaculture and toilet flushing.Research results can provide reference for future transformation of water resources utilization mode in Zhongshan City.