跨流域引调水工程供水效益量化分析

跨流域引调水工程是解决水资源时空分布不均、社会水需求不均衡最有效措施。根据跨流域引调水工程涉及不同流域、功能综合、结构复杂、相互交叉的特点,提出了对跨流域引调水工程的供水效益进行量化分析的方法,根据供水结构,基于效益分摊的思想分别对生活供水效益、“三产”供水效益进行量化计算,其中第一产业水产养殖效益采用增加收益法计算。以浙东引水工程为例,具体分析计算了2017年浙东引水工程给工程沿线地区居民生活、“三产”等方面带来的经济效益。计算结果表明,该量化方法能够较好地应用于实际跨流域引调水工程的供水效益计算,且结果较以往单一计算方法更为合理,贴近实际。

Quantitative analysis of water supply benefits of inter-basin water diversion projects

The inter-basin water diversion project is the most effective measure to solve the non-uniformly spatial and temporal distribution of water resources and the uneven water demand of society. According to the characteristics of inter-basin water transfer projects such as involvement in different basins, multi-function, complicated structure and intersection with the local drainage, a method for quantitative analysis of water supply benefits of inter-basin water diversion projects is put forward. In accordance with the structure of water supply, the water supply benefits of the domestic living and the three main industries are quantitatively calculated based on the idea of benefit allocation, among which the benefits of aquaculture in the primary industry are calculated by use of the increasing income method. Finally, taking East Zhejiang water diversion project as an example, the economic benefits brought by East Zhejiang water diversion project in 2017 to the residents'' living and producing and three main industries are analyzed and calculated. The results show that the proposed quantitative method can be applied to the calculation of water supply benefits in practical inter-basin diversion projects better, and its results are more reasonable and practical than the previous single calculation method.