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以花园口-兰考段大堤保护区为研究区,利用水力学模拟的方法对研究区内洪水的危险性进行分析,然后结合社会经济空间分布状况,建立洪灾风险空间识别的指标体系,应用地理信息系统地图代数功能和模糊数学综合聚类相结合的方法,对研究区内的洪灾风险进行识别,并进行洪灾风险的空间格局分析．结果表明:洪灾风险程度最高的区域主要分布在研究区东北部,区内平均水深为1．36 m,平均流速0．33 m／s,平均GDP密度为435．37万元／km2,平均人口密度为841．43人／km2,洪灾风险二级类型地区分布在研究区西北部,风险三级区分布在研究区东南部,风险四级区主要分布在研究区西南部,其他地区相对较为安全,洪灾风险较小．在洪灾风险空间识别方法和技术手段上的尝试可以为其他类似地区的洪灾风险识别提供参考．
Taking Huayuankou-Lankao Section Levee Protection Area as the research area, the paper analyzes the danger of flood in the study area by using the method of hydraulic simulation, and then establishes the index system of spatial identification of flood risk according to the social and economic spatial distribution, and applies the geographic information The combination of system map algebra and fuzzy mathematics integrated clustering, the flood risk in the study area is identified and the spatial pattern of flood risk is analyzed. The results show that the areas with the highest degree of flood risk are mainly located in the northeast of the study area, with an average water depth of 1.36 m, an average flow rate of 0.33 m / s and an average GDP density of 4.3537 million yuan / km2. The average population With a density of 841.43 persons / km2. The second class of flood risk areas are located in the northwestern part of the study area, the third class of risk areas are located in the southeast of the study area, and the fourth risk areas are mainly distributed in the southwestern part of the study area, while the other areas are relatively safe The flood risk is relatively small. Attempts to identify methods and techniques of flood risk spatial identification can provide references for flood risk identification in other similar areas.