基于地形地貌的区域地质灾害孕灾条件分析
何晓磊
（山西省地质勘查局二一二地质队有限公司，山西 长治 046000）
摘要： 通过分析资料、野外调查，基于ArcGIS 平台，利用DEM数据分别对地貌、斜坡坡度、斜坡高度及斜坡坡形这
四者与地质灾害的关系进行分析研究。结果表明，30°～70°斜坡地段滑坡灾害较为发育，50°～90°斜坡地段崩塌灾害较为
发育；从斜坡高度来看，滑坡主要发生在坡高10～40 m的斜坡地段，崩塌则主要发生坡高0耀50 m的斜坡地段；在斜坡
剖面形态为直线形的斜坡地段，崩塌和滑坡灾害较为发育。
关键词： 地形地貌；地质灾害；孕灾；斜坡
中图分类号： P642.2     文献标志码： A     文章编号： 2095-0802-(2022)08-0008-05
Disaster-pregnancy Conditions for Regional Geological Disasters Based on Topography
HE Xiaolei
(212 Geological Team Co., Ltd., Shanxi Provincial Geological Exploration Bureau, Changzhi 046000, Shanxi, China)
Abstract: This paper analyzed the relationship between geomorphology, ramp slope, slope height and slope shape and geological
hazards based on ArcGIS platform and DEM data through analysis of data and field investigation. The results show that landslide
disasters are more developed in the slope section with a slope gradient of 30°-70°, and collapse disasters are more developed
within a slope gradient of 50°-90°; from the perspective of slope height, landslides mainly occur on slopes with a slope height of
10-40 m, the collapse mainly occurs in the slope section with a slope height of 0-50 m; the collapse and landslide disasters are
more developed in the slope section with a "straight" slope profile.

Key words: topography; geological disaster; disaster-pregnancy; slope