基于斜坡单元优化的高海拔地区滑坡危险性评价——以金沙江白格滑坡为例

P694%P954; 为了开展高海拔、人员难以到达地区滑坡危险性评价,以金沙江白格滑坡为例,利用遥感影像,通过设置最佳填洼阈值、集水面积阈值来消除斜坡单元的误差直线,优化斜坡单元,采用优化后的斜坡单元对研究区进行危险性划分,评价效果有所提高.研究结果表明,研究区有80.95％的验证滑坡位于较高危险性和高危险性区内,验证滑坡集中率为2.266,较好集中了滑坡危险性分布特点.白格滑坡危险性指数为0.75,属于高危险性滑坡区,高危险性滑坡区还涉及江达县14个村庄和白玉县12个村庄,对此类地区应加强防范意识、完善应急设施....

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Published in河南理工大学学报（自然科学版） Vol. 40; no. 1; pp. 65 - 73
Main Authors 孟田, 许晓露, 刘汉湖
Format Journal Article
LanguageChinese
Published 成都理工大学国土资源部地学空间信息技术重点实验室,四川成都610059 2021
Subjects
斜坡单元
滑坡危险性
地理信息系统
层次分析法
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Abstract P694%P954; 为了开展高海拔、人员难以到达地区滑坡危险性评价,以金沙江白格滑坡为例,利用遥感影像,通过设置最佳填洼阈值、集水面积阈值来消除斜坡单元的误差直线,优化斜坡单元,采用优化后的斜坡单元对研究区进行危险性划分,评价效果有所提高.研究结果表明,研究区有80.95％的验证滑坡位于较高危险性和高危险性区内,验证滑坡集中率为2.266,较好集中了滑坡危险性分布特点.白格滑坡危险性指数为0.75,属于高危险性滑坡区,高危险性滑坡区还涉及江达县14个村庄和白玉县12个村庄,对此类地区应加强防范意识、完善应急设施.
AbstractList P694%P954; 为了开展高海拔、人员难以到达地区滑坡危险性评价,以金沙江白格滑坡为例,利用遥感影像,通过设置最佳填洼阈值、集水面积阈值来消除斜坡单元的误差直线,优化斜坡单元,采用优化后的斜坡单元对研究区进行危险性划分,评价效果有所提高.研究结果表明,研究区有80.95％的验证滑坡位于较高危险性和高危险性区内,验证滑坡集中率为2.266,较好集中了滑坡危险性分布特点.白格滑坡危险性指数为0.75,属于高危险性滑坡区,高危险性滑坡区还涉及江达县14个村庄和白玉县12个村庄,对此类地区应加强防范意识、完善应急设施.
Author 刘汉湖
孟田
许晓露
AuthorAffiliation 成都理工大学国土资源部地学空间信息技术重点实验室,四川成都610059
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XU Xiaolu
MENG Tian
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滑坡危险性
地理信息系统
层次分析法
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Title 基于斜坡单元优化的高海拔地区滑坡危险性评价——以金沙江白格滑坡为例
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