蓄滞洪区启用次序问题涉及很多定量指标与定性指标，属于半结构化问题。建立蓄滞洪区评价指标体系，应用层次分析法给出各评价指标的权重值，并综合利用GIS技术和层次分析法确定评价矩阵，最后进行实例研究，为蓄滞洪区的启用提供理论基础和决策依据，同时也为解决半结构问题提供有效途径。

The operation sequence of flood storage zones involves many qualitative and quantitative indexes. It belongs to a kind of semi - structure decision - making problem. An evaluation index system is established and theweight of each index calculated. A judgment matrix is found by using GIS technology and the analytic hierarchy process. And an illustration is given in the paper. This method provides a theoretic basis for evaluating the operation sequence of flood detention zones. 