供水工程最小生态环境需水量实例分析

Research on the Minimum Water Requirements of the Eco- environment of a Water Supply Project

生态与环境需水量的计算方法有多种,在前人研究的基础上,根据小同邦流域的特点和实际条件,初步确定选用Tennant法、枯水径流分析代表年法计算小同邦水库坝下河道内生态与环境需水量。通过综合分析,确定以其多年平均径流量的20%作为小同邦水库八里甸子镇供水工程中小同邦水库最小下泄生态环境流量,即0.022 m3/s。

There are various methods to calculate the eco - environment water demand. Based on previous studies, this article initially determines two selections according to the characteristics and actual conditions of the small watershed , one is Tennant method, and the other is the method to anal- ysis the low -flow runoff of the example weather years. Through an integrated analysis, this article determines 20 percent of the average annual flow as the minimum discharge flow of Xiaotongbang Reservoir in the water supply project for Balidianzi town , namely 0. 022 m3/s.