Analysis on Influencing Factors of Slope Stability in Loess Hilly and Gully Region

ZHANG Geng; WANG Zhiqiang; ZHU Zhe

doi:10.13870/j.cnki.stbcxb.2022.03.016

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Analysis on Influencing Factors of Slope Stability in Loess Hilly and Gully Region

更新时间：2026-04-09

- Analysis on Influencing Factors of Slope Stability in Loess Hilly and Gully Region
- Vol. 36, Issue 3, Pages: 107-114(2022)
- 作者机构：
  
  1. 北京师范大学地表过程与资源生态国家重点实验室,北京,100875
  2. 北京师范大学地理科学学部,北京,100075
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2022.03.016
  CLC： S157.1
- Online First：27 May 2022，
  
  Published：2022
- 稿件说明：
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ZHANG Geng, WANG Zhiqiang, ZHU Zhe. Analysis on Influencing Factors of Slope Stability in Loess Hilly and Gully Region[J]. 2022, 36(3): 107-114.
DOI：

ZHANG Geng, WANG Zhiqiang, ZHU Zhe. Analysis on Influencing Factors of Slope Stability in Loess Hilly and Gully Region[J]. 2022, 36(3): 107-114. DOI： 10.13870/j.cnki.stbcxb.2022.03.016.

摘要

选取黄土丘陵沟壑区纸坊沟小流域为研究区

利用高精度遥感影像(分辨率0.068 m)和DEM (分辨率0.34 m)数据

结合野外调查

对崩塌、滑塌、滑坡、脱落和陷穴等失稳体进行识别

通过统计学、敏感系数方法

利用识别失稳体数据

分析不同类型失稳体空间分布状况

定量研究不同类型失稳体的影响因子敏感程度

揭示不同类型失稳体的主控因子

进一步阐明流域坡体失稳体的空间分布规律和影响坡体稳定性的主控因子。结果表明:(1)利用高精度遥感影像

获取流域失稳体

主要是以小规模和浅层的脱落、崩塌和滑塌为主

三者面积合计为0.417 km2

占流域总面积的5.04%。(2)评价因子内部中

土壤母质的红黏土、土地利用的天然灌木林地和草地、地貌部位的沟坡、坡度＞35°、地形起伏度为0.74~3.34 m是坡体失稳发生的高敏感区域

也是崩塌、滑塌、脱落和陷穴发育共有的敏感区域。(3)影响坡体稳定性主控因子权重由大到小为土壤母质、地形起伏度、坡度、土地利用和坡向。崩塌、滑塌和脱落的主控因子与整体坡体稳定性的主控因子相同

但因子内部权重存在差异。崩塌与整体坡体稳定性影响因子顺序分布一致。滑塌主控因子权重由大到小为土壤母质＞地形起伏度＝坡度＞土地利用＞坡向＞地貌部位。脱落主控因子权重由大到小为土壤母质＞土地利用＞地形起伏度＞坡度＝坡向＞地貌部位。滑坡的主控因子为坡度和地形起伏度。陷穴的主控因子权重由大到小为土壤母质＞地形起伏度＞坡度＞坡向。

Abstract

The Zhifanggou watershed in the loess hilly and gully region was selected as the study area in this study. By high-precision remote sensing images (resolution 0.068 m) and DEM (resolution 0.34 m) data

combined with field investigations

the collapse

slide

landslide

creep and sinkhole were analyzed. The spatial distribution of different types of instability bodies were analyzed by using statistics and sensitivity coefficient methods. The main controlling factors of instability bodies were further clarified. The results showed that:(1) The instability bodies was obtained using high-precision remote sensing images

mainly in the form of small-scale and shallow shedding

collapse and slide. The total area of the three was 0.417 km2

accounting for 5.04% of the total watershed area. (2) Among the evaluation factors

the red clay of the soil parent material

the natural shrubland and grassland of the land use

the ditch slope of the landform

the slope of > 35° and RF of 0.74~3.34 m

were the highly sensitive areas where slope instability occurred. They are also the common sensitive area for collapse

slide

shedding

and sinkhole. (3) The weights of the main controlling factors affecting the stability of the slope were as following from large to small soil parent material

slope

land use and aspect. The main controlling factors of collapse

slide and shedding were the same as the overall slope stability

but their internal weights of the factors were different. The order of the weights of the main controlling factors of collapse was consistent with the overall slope stability. The weights of the main controlling factors of landslide were as follows:soil parent material > RF=slope > land use > slope aspect > landform position. The weights of the main controlling factors of shedding was soil parent material > land use > RF > slope=slope aspect > landform position. The main controlling factors of landslide were slope andRF. The weights of the main controlling factors of caverns was soil parent material > RF > slope > slope aspect.

关键词

Keywords

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