不同比例尺度下的地质灾害风险评价分析——以湖南黄溪口镇为例

林高聪, 刘欢, 王洪磊, 潘书华. 2024. 不同比例尺度下的地质灾害风险评价分析——以湖南黄溪口镇为例. 中国地质调查, 11(6): 100-110. doi: 10.19388/j.zgdzdc.2024.141
引用本文: 林高聪, 刘欢, 王洪磊, 潘书华. 2024. 不同比例尺度下的地质灾害风险评价分析——以湖南黄溪口镇为例. 中国地质调查, 11(6): 100-110. doi: 10.19388/j.zgdzdc.2024.141
LIN Gaocong, LIU Huan, WANG Honglei, PAN Shuhua. 2024. Risk assessment of geological hazards under different plotting scales: A case study of Huangxikou Town in Hunan Province. Geological Survey of China, 11(6): 100-110. doi: 10.19388/j.zgdzdc.2024.141
Citation: LIN Gaocong, LIU Huan, WANG Honglei, PAN Shuhua. 2024. Risk assessment of geological hazards under different plotting scales: A case study of Huangxikou Town in Hunan Province. Geological Survey of China, 11(6): 100-110. doi: 10.19388/j.zgdzdc.2024.141

不同比例尺度下的地质灾害风险评价分析——以湖南黄溪口镇为例

  • 基金项目:

    中国地质调查局“

    陇东南地区特大地质灾害链调查评价(编号: DD20221813)”

    和“

    三峡库区城镇危岩崩塌风险减缓技术示范(编号: DD20242410)”

    项目联合资助

详细信息
    作者简介: 林高聪(1989—),男,工程师,主要从事地质灾害调查评价与监测预警方面的研究工作。Email: lingaocong@mail.cgs.gov.cn。
    通讯作者: 王洪磊(1982—
  • 中图分类号: P681.7

Risk assessment of geological hazards under different plotting scales: A case study of Huangxikou Town in Hunan Province

More Information
    Corresponding author: WANG Honglei
  • 为探讨多尺度地质灾害风险评价模型、方法的差异和适用性,以湖南省黄溪口镇为研究区,在图幅单元灾害地质调查基础上,选取工程地质岩组、斜坡结构等8个评价指标,采用信息量模型开展以栅格为单元的 1∶5 万地质灾害风险评价,得出研究区低、中、高和极高风险区分别占总面积的32.0%、24.6%、38.0%和5.4%。采用水文学与人工干涉方法划分161处斜坡单元,选取发生地质灾害的可能性、灾害强度、承灾体类型和数量、易损性下的17个指标30个因子构建层次分析评分分级模型,开展以斜坡为单元的1∶1万重点区地质灾害风险评价,得出重点区地质灾害低风险斜坡84处、中风险斜坡49处、高风险斜坡24处、极高风险斜坡4处。受调查精度和评价方法影响,同一地段两种模型方法的评价结果不完全一致,应当依据调查精度和研究程度选用适当的评价方法。对于中小比例尺区域地质灾害风险评价,可采用基于数理统计定量计算的信息量评价模型,模型简单,易于推广,建模效率快,适合区域性推广; 对于大比例尺重点区地质灾害风险评价,基于精细化斜坡单元调查结果,可以建立层次分析多指标评分分级评价模型,评价指标详细易懂,可实现对逐个斜坡单元的风险评价,适用于边坡管理和斜坡风险动态更新。研究成果可为不同比例尺度下的地质灾害风险评价方法选取和应用提供参考。
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出版历程
收稿日期:  2024-02-20
修回日期:  2024-11-05

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