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基于改进突变理论的滑坡危险性评价

张蕊, 郭荣昌, 贺攀, 余岭燕

张蕊,郭荣昌,贺攀,等. 基于改进突变理论的滑坡危险性评价[J]. 中国地质灾害与防治学报,2023,34(1): 121-128. DOI: 10.16031/j.cnki.issn.1003-8035.202112034
引用本文: 张蕊,郭荣昌,贺攀,等. 基于改进突变理论的滑坡危险性评价[J]. 中国地质灾害与防治学报,2023,34(1): 121-128. DOI: 10.16031/j.cnki.issn.1003-8035.202112034
ZHANG Rui,GUO Rongchang,HE Pan,et al. Landslide hazard assessment based on improved catastrophe theory[J]. The Chinese Journal of Geological Hazard and Control,2023,34(1): 121-128. DOI: 10.16031/j.cnki.issn.1003-8035.202112034
Citation: ZHANG Rui,GUO Rongchang,HE Pan,et al. Landslide hazard assessment based on improved catastrophe theory[J]. The Chinese Journal of Geological Hazard and Control,2023,34(1): 121-128. DOI: 10.16031/j.cnki.issn.1003-8035.202112034

基于改进突变理论的滑坡危险性评价

基金项目: 甘肃省自然科学基金(21JR1RA254);兰州交通大学青年科学基金项目(2018021)
详细信息
    作者简介:

    张 蕊(1994-),女,汉族,陕西西安人,硕士研究生,研究方向为地质灾害风险评估。E-mail:2991099579@qq.com

    通讯作者:

    郭荣昌(1986-),男,汉族,河南林州人,博士,副教授,研究方向为地质灾害风险评估。E-mail:grc_mail@126.com

  • 中图分类号: P642.22

Landslide hazard assessment based on improved catastrophe theory

  • 摘要: 滑坡危险性评价是滑坡风险评估的重要组成部分,对滑坡的预测和防治意义重大。传统滑坡危险性评价在计算指标间重要性时多采用AHP、专家评判法、模糊综合评判等方法, 但存在主观性较强,计算较为复杂等问题。研究基于一种改进的突变理论模型对滑坡进行危险性评价,选取坡度、坡向、高程、平面曲率、剖面曲率、距河流距离、地层岩性、土地利用类型、距断层距离、植被覆盖率、24 h降雨以及人类工程活动等12 个因子作为滑坡危险性评价的影响因子,采用熵权法判定指标间的相对重要性,并建立滑坡危险性评价体系;然后对指标进行标准化、归一化,计算总突变结果;最后使用拟合函数对总突变结果进行转换,得到新的滑坡危险性评价准则,并以雅安市的20 条滑坡对评价准则进行实例验证。结果表明,突变理论得到的评价结果准确率为90%,评价结果更加直观准确。
    Abstract: Landslide hazard assessment is an important part of landslide risk assessment, which is of great significance to landslide prediction and prevention. Analytic Hierarchy Process(AHP), expert evaluation, fuzzy comprehensive evaluation and other methods were often used in traditional landslide hazard evaluation to calculate the importance of inter-index, which were subjective and complicated. This paper introduced an improved model of mutation theory, which overcame the limitation of traditional methods and achieved higher evaluation accuracy. Firstly, according to field investigation and previous studies, 12 factors including slope, slope direction, elevation, plane curvature, profile curvature, distance from river, stratigraphic lithology, land use type, distance from fault, vegetation coverage rate, 24 h rainfall and human engineering activities were selected as influencing factors of landslide risk assessment, and the relative importance of indicators was determined by entropy weight method, and the landslide risk assessment system was established. Then the index was standardized and normalized, and the total mutation result was calculated. Finally, the fitting function was used to transform the total catastrophe result, and a new criterion of landslide risk assessment was obtained. Taking 20 landslides in Ya’an city as an example, the results showed that the accuracy of the evaluation results obtained by the catastrophe theory was 90%, and the improved evaluation results were more intuitive and accurate
  • 图  1   常用突变模型

    Figure  1.   Common mutation model

    图  2   底层指标与总突变结果拟合曲线

    Figure  2.   Fitting curve of bottom index and total mutation result

    表  1   一维状态变量的突变模型

    Table  1   Mutation model of one-dimensional state variables

    突变模型控制变量维数势函数归一公式
    折叠突变1x3+axxa=a
    尖点突变2x4+ax2+bxxa=a
    xb=b3
    燕尾突变3x5+ax3+bx2+cxxa=a
    xb=b3
    xc=c4
    下载: 导出CSV

    表  2   研究区滑坡的各评价指标

    Table  2   Evaluation indexes of landslide in the study area

    滑坡点24 h降雨
    /mm
    地层岩性距断层距离
    /km
    土地利用
    类型
    坡度
    /(°)
    高程
    /m
    坡向
    / (°)
    平面曲率剖面曲率距河流距离
    /km
    植被
    覆盖率
    117砂岩3.1176有林地11.5042140322.8906−0.54400.53210.31680.3029
    22砾岩7.0588灌木林11.9137100299.0903−0.57420.11380.17400.1429
    316砂岩11.1765旱地9.646278911.30990.02170.14960.1740−0.1176
    49砂岩3.8235疏林地11.2428968326.9761−0.03500.04330.1020−0.0078
    518砂岩7.0588旱地27.0311696210.96380.1002−0.15830.44000.2735
    612砾岩0.4118旱地15.9518809122.73520.03800.20030.09000.3369
    718砂岩5.0588水田24.13191827170.36250.0489−0.00720.28000.4900
    86砂岩7.6471高覆盖度草地16.7599815255.5792−0.09650.09150.04320.4749
    98泥岩2.3529旱地20.9576157481.8699−0.0307−0.10130.27200.3189
    1017泥岩6.4706中覆盖度草地20.81431103243.9967−0.1543−0.03560.12600.2003
    113砂岩4.7059城镇用地12.958864958.32450.1499−0.06420.0300−0.0732
    1217砂岩2.6471有林地20.74551205124.31510.0250−0.12040.30000.3348
    1315砂岩9.0000中覆盖度草地23.0888209485.5154−0.0577−0.22898.60000.1837
    1418砂岩4.1176旱地7.853961125.0169−0.08660.21410.08000.1813
    1513冲洪积砾石及砂土2.2353旱地18.43501086180.0000−0.1286−0.11710.16400.0000
    165砂岩8.5294旱地18.568672660.25510.0832−0.07020.10000.2671
    1722冲洪积砾石及砂土2.3529旱地7.11721096334.2900−0.15900.49790.16800.3975
    1832砂岩8.4706旱地29.2601176959.62090.1344−0.02706.50000.4317
    1934冲洪积砾石及砂土8.8235旱地14.752557685.46220.11030.01150.04400.2170
    2034砂岩7.0588中覆盖度草地14.7242889267.27370.3683−0.34480.31200.3745
    下载: 导出CSV

    表  3   滑坡危险性评价体系

    Table  3   Landslide risk assessment system

    目标层突变模型准则层突变模型中间层突变模型指标层
    滑坡危险性A燕尾突变(非互补)地形地貌B1尖点突变(非互补)地貌C1燕尾突变(非互补)剖面曲率D1
    平面曲率D2
    坡向D3
    滑坡形态C2尖点突变(互补)高程D4
    坡度D5
    地质条件B2燕尾突变(非互补)岩性条件C3折叠突变地层岩性D6
    构造条件C4尖点突变(非互补)距断层距离D7
    距河流距离D8
    植被条件C5折叠突变植被覆盖率D9
    诱发因素B3折叠突变致灾因子C6燕尾突变(非互补)24 h降雨D10
    土地利用类型D11
    人类工程活动D12
    下载: 导出CSV

    表  4   底层指标x与总突变结果y对应关系

    Table  4   Corresponding relationship between underlying indicators x and total mutation results y

    x0.000.050.100.150.200.250.30
    y0.00000.58660.74070.79000.82150.84510.8640
    x0.350.400.450.500.550.600.65
    y0.87990.89370.90580.91670.92660.93560.9440
    x0.700.750.800.850.900.951.00
    y0.95170.95900.96580.97230.97840.98420.9897
    下载: 导出CSV

    表  5   标准化结果

    Table  5   Standardization results

    序号剖面曲率平面曲率坡向高程坡度地层岩性距断层距离距河流距离植被覆盖率降雨土地利用类型人类工程活动
    10.94480.08450.07490.49560.19780.900.76960.96930.35320.42990.700.89
    20.51120.05540.52360.27090.21370.600.43910.98440.59260.00500.600.34
    30.54830.63020.00670.15160.12570.900.09370.98440.98240.41420.500.35
    40.43810.57550.21700.25190.18760.900.71040.99200.81800.19280.800.30
    50.22910.70590.83510.09950.80000.900.43910.95620.39730.44840.500.40
    60.60090.64590.66280.16280.37030.600.99650.99330.30230.30210.500.33
    70.38580.65630.94320.73310.68760.900.60680.97320.07330.46190.400.80
    80.48800.51610.59740.16620.40160.900.38970.99830.09580.11151.100.32
    90.28820.57960.42220.59140.56451.400.83370.97400.32930.16480.500.32
    100.35630.46040.65910.32750.55891.400.48840.98950.50670.42991.200.32
    110.32660.75380.28350.07320.25420.900.63640.99970.91590.04150.100.20
    120.26840.63330.67210.38460.55620.900.80910.97110.30540.42990.700.30
    130.15590.55360.44360.88270.64710.900.27630.09120.53150.38691.200.48
    140.61520.52570.08740.05190.05620.900.68570.99440.53510.44850.500.31
    150.27180.48521.00000.31800.46661.500.84360.98550.80640.30770.500.32
    160.32040.68950.29490.11630.47180.900.31570.99230.40680.08930.500.30
    170.90930.45580.17810.32360.02761.500.83370.98510.21170.56600.500.30
    180.36520.73890.29110.70060.88650.900.32070.31380.16050.84300.500.46
    190.40510.71560.44330.03230.32381.500.29110.99820.48170.90480.500.35
    200.03570.96450.53510.20760.32270.900.43910.96980.24610.90501.200.40
    下载: 导出CSV

    表  6   滑坡危险性评价准则

    Table  6   Criteria for landslide hazard assessment

    危险性级别高危险中危险低危险
    改进前(0.9100, 1](0.8500, 0.9100](0, 0.8500]
    改进后(0.4798, 1](0.2916, 0.4798](0, 0.2916]
    下载: 导出CSV

    表  7   滑坡危险性评价结果

    Table  7   Landslide risk assessment results

    序号改进前危险性改进后危险性现场调查结果
    10.8057低危险0.2019低危险低危险
    20.6435低危险0.0526低危险低危险
    30.6586低危险0.0596低危险低危险
    40.8561中危险0.3068中危险中危险
    50.8880中危险0.3998中危险中危险
    60.8654中危险0.3313中危险高危险
    70.8493低危险0.2900低危险低危险
    80.8330低危险0.2531低危险低危险
    90.8605中危险0.3181中危险中危险
    100.9140高危险0.4961高危险高危险
    110.7670低危险0.1465低危险低危险
    120.9216高危险0.5281高危险高危险
    130.9019中危险0.4486中危险中危险
    140.7434低危险0.1204低危险低危险
    150.9046中危险0.4589中危险中危险
    160.8177低危险0.2230低危险低危险
    170.8124低危险0.2134低危险中危险
    180.8919中危险0.4130中危险中危险
    190.8113低危险0.2114低危险低危险
    200.8310低危险0.2492低危险低危险
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-12-27
  • 修回日期:  2022-04-06
  • 网络出版日期:  2022-10-25
  • 刊出日期:  2023-02-24

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