摘要
斜坡单元的划分方法会影响大比例尺滑坡灾害易发性评价的效果,目前斜坡单元划分方法尚不统一且用于滑坡灾害易发性评价的使用效果不明确。从斜坡单元形态、面积大小、数量以及滑坡灾害易发性评价精度方面,对比分析了水文分析法和曲率分水岭法用于1:10 000尺度区域斜坡单元提取和滑坡灾害易发性评价的效果,并以湖北省咸丰县高乐山镇为研究区,研究发现曲率分水岭法能划分出形状分布更均匀、更接近历史滑坡面积大小的单元,且能得到评价精度更高的滑坡灾害易发性分区结果。
Slope unit division method affects large-scale landslide susceptibility results.However,the methods of slope unit division are not uniform and the effects are not clear in landslide This paper discusses the advantages and disadvantages of two methods for slope unitdivision,Hydrological Method(HM)and Curvature Watershed Method(CW M),in terms of the shape,size,quantity and landslide susceptibility evaluation(1:10 000).A case study for landslides in Gaole T ow n,Xianfeng County,Hubei Province shows that CWM could divide units with more uniform distribution,more similar to historical landslides size,and could get better results of the landslide susceptibility.
作者
张曦
陈丽霞
徐勇
连志鹏
ZHANG Xi;CHEN Lixia;XU Yong;LIAN Zhipeng(Faculty of Geophysics and Geomatics,China University of Geosciences,Wuhan 430074, China;Wuhan Center of Geological Survey,China Geological Survey,Wuhan 430205,China)
出处
《安全与环境工程》
CAS
北大核心
2018年第1期12-17,50,共7页
Safety and Environmental Engineering
基金
国家自然科学基金项目(41641012)
中国地质调查局科研专题项目(D5.7.3)
关键词
斜坡单元划分
滑坡灾害
易发性评价
水文分析法
曲率分水岭法
slope unit division
landslide
susceptibility evaluation
Hydrological Method(H M)
Curvature Watershed Method(CWM)
