Based on the theoretical researches of spare reservoir location and construction scale, this paper described a case in Wujiang, a city on eastern coast of Taihu Lake. by using digital model as technical support, the factors of position selection and water supply scale of the spare reservoir, which need great attention and priority to solve, were analyzed and discussed.%在备用水库的选址、建设规模确定的理论研究的基础上,以东太湖吴江应急备用水库建设为实例,以数模为技术支撑手段,分析和探讨了备用水库在东太湖的位置、合理供水规模的确定等需要关注并亟待解决的问题.
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