拓扑检查单个图层是否重叠（Must not overlap）：
打开ArcCatalog，mdb库中新建Topology,选择需要检查的图层，设置容差，添加检查规则 Must not overlap。完成之后将拓扑加到GIS中即可查看。
类似还有其他检查规则：
Must not have gaps不许有间隔
Must not overlap with禁止要素类间重叠
Must be covered by feature class of必须被要素类覆盖
Must cover each other须相互覆盖
Must be covered by必须被覆盖
Boundary Must be covered by边界必须被覆盖
Area Boundary Must be covered by区域边界必须被其他边界覆盖
