| 姚帅,张婧,王玺,马涛峰,陈泳霖,乔欣欣.基于确定性系数法的南太行山区崩塌滑坡地质灾害影响因子敏感性分析——以河南省辉县市为例[J].矿产勘查,2025,16(4):898-910 |
| 基于确定性系数法的南太行山区崩塌滑坡地质灾害影响因子敏感性分析——以河南省辉县市为例 |
| Sensitivity analysis of influencing factors for landslide geological hazard in southern Taihang Mountains area: A case study of Huixian City, Henan Province |
| 投稿时间：2023-07-28 |
| DOI：10.20008/j.kckc.202504020 |
| 中文关键词: 地质灾害 孕灾环境 确定性系数模型 敏感性分析 南太行山区 |
| 英文关键词: geological hazard hazard-formative environments deterministic coefficient model sensitivity analysis Henan Taihang Mountain area |
| 基金项目:本文受河南省地质研究院地质科技攻关项目(2024-909-XM05、2024-901-XM04)河南省地质灾害风险调查评价项目(豫地灾项目﹝2021﹞03号)，河南省自然科技项目(豫自然资函﹝2019﹞373号-11)，河南省地质灾害防治十四五，规划(豫自然资发[2020]7号)联合资助。 |
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| 中文摘要: |
| 辉县市位于中国第二、三阶梯的过渡地带，地形起伏较大，构造活动强烈，地表侵蚀严重，在山地特殊气候作用下崩塌滑坡等斜坡地质灾害多发。为了定量分析研究区内崩塌滑坡影响因子的敏感性，本文基于 GIS与确定性系数法，选取高程、坡度、坡向、坡型、地形起伏度、工程地质岩组、距断层距离、距水系距离、距道路距离、土地利用类型、归一化植被指数、最大月累积平均降雨量共 12个影响因子开展了崩塌滑坡地质灾害影响因子敏感性研究，划分了易发性分区。结果表明:(1)在因子分级中，坡度>60°、道路 0~50 m、水系 0~100 m、地形起伏度>75 m、NDVI 0.4~0.6、南向坡、最大月累积平均降雨量>230 mm、高程 600~900 m、凸型坡、块状较坚硬片麻岩岩组、交通运输用地是各因子敏感性指数最高的分级区间；距断裂距离因子对灾害敏感性低，相关性不明显。(2)影响因子敏感性由大到小依次为坡度>工程地质岩组>距道路距离>距水系距离>地形起伏度>植被覆盖率>坡向>土地利用类型>最大月累积平均降雨量>高程>坡型>距断层距离，坡度、工程地质岩组、距道路距离、距水系距离、地形起伏度共 5个因子是辉县市地质灾害的主控因素。(3)高、中易发区内发生的崩塌滑坡灾害数量占总数的 97.87%，崩塌滑坡灾害与影响因子敏感性分析具有较好的吻合性。因此，研究成果可为辉县市地质灾害评价防治和风险管控提供科学依据。 |
| 英文摘要: |
| Huixian City is located in the transition zone of the second and third stairway in China. Due to largetopographic relief, strong tectonic activities and serious surface erosion, as well as unique climate changes in thisarea, geological hazard of landslides occur frequently. On basis of development characteristics of geological hazards,12 factors including elevation, slope, slope direction, slope type, land relief, engineering geological group, distanceto fault, distance to river, distance to road, land use type, NDVI, maximum monthly cumulative mean rainfall are se-lected as the evaluation indexes. Relying on ArcGIS software, deterministic coefficient model and sensitivity-exponential, susceptibility of these 12 factors and sensitivity partition are researched. The results show that the ar-eas with slope >60°, distance from road and rivers within 50 m, 100 m respectively, the relief degree >75 m, NDVI0.4-0.6, the aspect of south, maximum monthly cumulative mean rainfall >230 mm, the elevation from 600 to 900 mand the convex slope, Massive hard gneiss rock group, transportation land are sensitive areas of geological hazard.The sensitivity of distance from fault to disaster is low and the correlation is not obvious. Five factors includingslope, engineering geological rock group, distance from road, distance from rivers and relief degree are main control-ling factors of geological disasters. The number of landslide disasters in high and middle prone areas accounted for97.87%, and the sensitivity analysis of landslide disasters and impact factors had a good agreement. The research re-sults can provide a basis for geological disaster prevention and risk control in Huixian City. |
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