Evaluation of geological hazard susceptibility of collapse and landslide in Yuanyang County using slope units and random forest modeling
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摘要:
针对基于栅格单元与定性定量方法模型在地质灾害易发性评价中存在模型预测精度低且使用较为频繁的不足与弊端,采用斜坡单元与机器学习方法之一的随机森林模型相结合开展元阳县崩滑地质灾害易发性评价。在ArcGIS中,利用曲率分水岭法划分出7851个斜坡单元。经过大量统计研究与地质环境条件分析,选取工程地质岩组、地貌类型、高程、坡度、坡向、曲率、起伏度、河流距离、断层距离等9个因子作为评价指标,并通过SPSS软件,将9个评价指标与灾点发育特征的关系进行数据分析,得出各评价指标权重。在SPSS中,采用随机森林模型,建立易发性评价模型,将元阳县崩滑地质灾害易发性划分为低、中、高、极高4类,所占面积分别为410.06 km2、470.21 km2、550.02 km2和776.87 km2,分别占元阳县面积的18.58%、21.30%、24.92%和35.20%。经与详查结果对比,评价结果与实际高度吻合。利用ROC曲线得出区划结果精度AUC值为92.7%,区划结果相当好。研究显示,元阳县中部和西南两个部分地质灾害集中,易发性极高。
Abstract:The model based on grid unit and qualitative and quantitative method has the disadvantages of low prediction accuracy and frequent use in the evaluation of geological hazard susceptibility, was utilized to evaluate the potential for collapse and landslide in Yuanyang County. Using ArcGIS, 7851 slope units were divided via the curvature watershed method. Through a large number of statistical study and analysis of geological environment condition, nine evaluation factors were selected, including engineering geological petrofabric, landform type, elevation, gradient, slope direction, curvature, ups and downs, rivers, distance and fault distance. These factors were analyzed and their weights determined using SPSS software, in conjunction with data on the development characteristics of disaster points. The random forest model was then applied to establish a vulnerability evaluation model, which categorized landslide geological disaster in Yuanyang County into four types: low, medium, high and extremely high, occupying an area of 410.06 km2, 470.21 km2, 550.02 km2 and 776.87 km2 respectively. These areas correspond to 18.58%, 21.30%, 24.92% and 35.20% of Yuanyang County’s total area. The evaluation results were compared with the detailed investigation results and were found to be highly consistent. The accuracy of ROC curve was calculated at 92.7%, indicating a high level of accuracy. The central and southwest parts of Yuanyang County were found to be highly susceptible to geological disasters.
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表 1 随机森林模型参数
Table 1. Summary table of Random forest model parameters
参数名 参数值 训练用时/s 0.156 数据切分 0.7 数据洗牌 是 交叉验证 否 节点分裂评价准则 gini 决策树数量 100 有放回采样 TRUE 袋外数据测试 FALSE 划分时考虑的最大特征比例 auto 内部节点分裂的最小样本数 2 叶子节点的最小样本数 1 叶子节点中样本的最小权重 0 树的最大深度 10 叶子节点的最大数量 50 节点划分不纯度的阈值 0 表 2 数据集精确率
Table 2. Summary table of dataset accuracy
准确率 召回率 精确率 F1 训练集 0.920 0.920 0.926 0.920 测试集 0.705 0.705 0.705 0.704 注:F1为精确率和召回率的调和平均。 表 3 易发性分级数据统计
Table 3. Sueceptibility classification data statistics
易发性等级 灾点数 比重/% 区间面积/km2 比重/% 低 19 7.34 410.06 18.58 中 21 8.11 470.21 21.30 高 77 29.73 550.02 24.92 极高 142 54.83 776.87 35.20 表 4 评价结果对比表
Table 4. Comparison table of evaluation results
结果来源 易发性等级 灾点数 比重/% 区间面积/km2 比重/% 本文评价结果 低 19 7.34 410.06 18.58 中 21 8.11 470.21 21.30 高 77 29.73 550.02 24.92 极高 142 54.83 776.87 35.20 详查评价结果 低 0 0.00 369.70 16.75 中 19 7.34 511.18 23.16 高 80 30.89 591.30 26.79 极高 157 60.62 734.98 33.30 -
[1] 殷坤龙,张桂荣. 地质灾害风险区划与综合防治对策[J]. 安全与环境工程,2003,10(1):32 − 35. [YIN Kunlong,ZHANG Guirong. Risk zonation of geo-hazards and its comprehensive control[J]. Safety and Environmental Engineering,2003,10(1):32 − 35. (in Chinese with English abstract) doi: 10.3969/j.issn.1671-1556.2003.01.010
YIN Kunlong, ZHANG Guirong. Risk zonation of geo-hazards and its comprehensive control[J]. Safety and Environmental Engineering, 2003, 10(1): 32-35. (in Chinese with English abstract) doi: 10.3969/j.issn.1671-1556.2003.01.010
[2] 田述军,张珊珊,唐青松,等. 基于不同评价单元的滑坡易发性评价对比研究[J]. 自然灾害学报,2019,28(6):137 − 145. [TIAN Shujun,ZHANG Shanshan,TANG Qingsong,et al. Comparative study of landslide susceptibility assessment based on different evaluation units[J]. Journal of Natural Disasters,2019,28(6):137 − 145. (in Chinese with English abstract) doi: 10.13577/j.jnd.2019.0615
TIAN Shujun, ZHANG Shanshan, TANG Qingsong, et al. Comparative study of landslide susceptibility assessment based on different evaluation units[J]. Journal of Natural Disasters, 2019, 28(6): 137-145. (in Chinese with English abstract) doi: 10.13577/j.jnd.2019.0615
[3] 王磊,常鸣,邢月龙. 基于信息量法模型与GIS的滑坡地质灾害风险性评价[J]. 地质灾害与环境保护,2021,32(2):14 − 20. [WANG Lei,CHANG Ming,XING Yuelong. Risk assessment of landslide geological hazards based on information method model and GIS[J]. Journal of Geological Hazards and Environment Preservation,2021,32(2):14 − 20. (in Chinese with English abstract) doi: 10.3969/j.issn.1006-4362.2021.02.003
WANG Lei, CHANG Ming, XING Yuelong. Risk assessment of landslide geological hazards based on information method model and GIS[J]. Journal of Geological Hazards and Environment Preservation, 2021, 32(2): 14-20. (in Chinese with English abstract) doi: 10.3969/j.issn.1006-4362.2021.02.003
[4] 于成龙. 和龙市典型地质灾害风险性区划与地质环境承载力综合评价研究[D]. 长春: 吉林大学, 2021
YU Chenglong. Study on risk mapping of typical geological hazards and comprehensive evaluation of geological environment carrying capacity in Helong City[D]. Changchun: Jilin University, 2021. (in Chinese with English abstract)
[5] 朱浩濛, 马晓峰, 张义顺. 基于斜坡单元下的层次分析法在地质灾害易发性区划中的应用[C]//防治地灾 除险安居——浙江省地质学会2017年学术年会论文集. 杭州, 2017: 79 − 84.
ZHU Haomeng, MA Xiaofeng, ZHANG Yishun. Application of analytic hierarchy process based on slope unit in geological disaster-prone regionalization[C]//Prevention and control of local disasters, removal of risks and housing: Proceedings of the 2017 Academic Annual Conference of Zhejiang Geological Society. Hangzhou, 2017: 79 − 84.
[6] 赵晓燕,谈树成,李永平. 基于斜坡单元与组合赋权法的东川区地质灾害危险性评价[J]. 云南大学学报(自然科学版),2021,43(2):299 − 305. [ZHAO Xiaoyan,TAN Shucheng,LI Yongping. Risk assessment of geological hazards in Dongchuan District based on the methods of slope unit and combination weighting[J]. Journal of Yunnan University (Natural Sciences Edition),2021,43(2):299 − 305. (in Chinese with English abstract)
ZHAO Xiaoyan, TAN Shucheng, LI Yongping. Risk assessment of geological hazards in Dongchuan District based on the methods of slope unit and combination weighting[J]. Journal of Yunnan University (Natural Sciences Edition), 2021, 43(2): 299-305. (in Chinese with English abstract)
[7] 李益敏,李驭豪,赵志芳. 基于确定性系数模型的泸水市泥石流易发性评价[J]. 水土保持研究,2019,26(4):336 − 342. [LI Yimin,LI Yuhao,ZHAO Zhifang. Assessment on susceptibility of debris flow in Lushui based on the certain factor model[J]. Research of Soil and Water Conservation,2019,26(4):336 − 342. (in Chinese with English abstract) doi: 10.13869/j.cnki.rswc.2019.04.050
LI Yimin, LI Yuhao, ZHAO Zhifang. Assessment on susceptibility of debris flow in Lushui based on the certain factor model[J]. Research of Soil and Water Conservation, 2019, 26(4): 336-342. (in Chinese with English abstract) doi: 10.13869/j.cnki.rswc.2019.04.050
[8] 胡燕,李德营,孟颂颂,等. 基于证据权法的巴东县城滑坡灾害易发性评价[J]. 地质科技通报,2020,39(3):187 − 194. [HU Yan,LI Deying,MENG Songsong,et al. Landslide susceptibility evaluation in Badong County based on weights of evidence method[J]. Bulletin of Geological Science and Technology,2020,39(3):187 − 194. (in Chinese with English abstract)
HU Yan, LI Deying, MENG Songsong, et al. Landslide susceptibility evaluation in Badong County based on weights of evidence method[J]. Bulletin of Geological Science and Technology, 2020, 39(3): 187-194. (in Chinese with English abstract)
[9] 牛瑞卿,彭令,叶润青,等. 基于粗糙集的支持向量机滑坡易发性评价[J]. 吉林大学学报(地球科学版),2012,42(2):430 − 439. [NIU Ruiqing,PENG Ling,YE Runqing,et al. Landslide susceptibility assessment based on rough sets and support vector machine[J]. Journal of Jilin University (Earth Science Edition),2012,42(2):430 − 439. (in Chinese with English abstract)
NIU Ruiqing, PENG Ling, YE Runqing, et al. Landslide susceptibility assessment based on rough sets and support vector machine[J]. Journal of Jilin University (Earth Science Edition), 2012, 42(2): 430-439. (in Chinese with English abstract)
[10] 郑迎凯,陈建国,王成彬,等. 确定性系数与随机森林模型在云南芒市滑坡易发性评价中的应用[J]. 地质科技通报,2020,39(6):131 − 144. [ZHENG Yingkai,CHEN Jianguo,WANG Chengbin,et al. Application of certainty factor and random forests model in landslide susceptibility evaluation in Mangshi City,Yunnan Province[J]. Bulletin of Geological Science and Technology,2020,39(6):131 − 144. (in Chinese with English abstract)
ZHENG Yingkai, CHEN Jianguo, WANG Chengbin, et al. Application of certainty factor and random forests model in landslide susceptibility evaluation in Mangshi City, Yunnan Province[J]. Bulletin of Geological Science and Technology, 2020, 39(6): 131-144. (in Chinese with English abstract)
[11] 陆跃萍. 从元阳县城滑坡灾害看山区城镇建设的环境因素[J]. 云南环境科学,1993,12(1):39 − 41. [LU Yueping. Environmental factors of urban construction in mountainous areas from landslide disaster in Yuanyang County[J]. Yunnan Environmental Science,1993,12(1):39 − 41. (in Chinese with English abstract)
LU Yueping. Environmental factors of urban construction in mountainous areas from landslide disaster in Yuanyang County[J]. Yunnan Environmental Science, 1993, 12(1): 39-41. (in Chinese with English abstract)
[12] 戚琦. 基于GIS和目标层次联合分析方法的元阳县地质灾害易发程度评价研究[D]. 北京: 中国地质大学(北京), 2012
QI Qi. Study on the evaluation of the susceptibility of geological hazards occurring in Yuan yang County based on the combination of AHP and GIS[D]. Beijing: China University of Geosciences, 2012. (in Chinese with English abstract)
[13] 屠水云,张钟远,付弘流,等. 基于CF与CF-LR模型的地质灾害易发性评价[J]. 中国地质灾害与防治学报,2022,33(2):96 − 104. [TU Shuiyun,ZHANG Zhongyuan,FU Hongliu,et al. Geological hazard susceptibility evaluation based on CF and CF-LR model[J]. The Chinese Journal of Geological Hazard and Control,2022,33(2):96 − 104. (in Chinese with English abstract) doi: 10.16031/j.cnki.issn.1003-8035.2022.02-12
TU Shuiyun, ZHANG Zhongyuan, FU Hongliu, et al. Geological hazard susceptibility evaluation based on CF and CF-LR model[J]. The Chinese Journal of Geological Hazard and Control, 2022, 33(2): 96-104. (in Chinese with English abstract) doi: 10.16031/j.cnki.issn.1003-8035.2022.02-12
[14] 温鑫,范宣梅,陈兰,等. 基于信息量模型的地质灾害易发性评价—以川东南古蔺县为例[J]. 地质科技通报,2022,41(2):290 − 299. [WEN Xin,FAN Xuanmei,CHEN Lan,et al. Susceptibility assessment of geological disasters based on an information value model:A case of Gulin County in southeast Sichuan[J]. Bulletin of Geological Science and Technology,2022,41(2):290 − 299. (in Chinese with English abstract)
WEN Xin, FAN Xuanmei, CHEN Lan, et al. Susceptibility assessment of geological disasters based on an information value model: a case of Gulin County in Southeast Sichuan[J]. Bulletin of Geological Science and Technology, 2022, 41(2): 290-299. (in Chinese with English abstract)
[15] 毕鸿基,聂磊,曾超,等. 基于三种多变量不安定指数分析模型的汶川县地质灾害易发性评价[J]. 中国地质灾害与防治学报,2022,33(1):123 − 131. [BI Hongji,NIE Lei,ZENG Chao,et al. Geological hazard susceptibility evaluation in Wenchuan area based on three models of multivariate instability index analysis[J]. The Chinese Journal of Geological Hazard and Control,2022,33(1):123 − 131. (in Chinese with English abstract) doi: 10.16031/j.cnki.issn.1003-8035.2022.01-15
BI Hongji, NIE Lei, ZENG Chao, et al. Geological hazard susceptibility evaluation in Wenchuan area based on three models of multivariate instability index analysis[J]. The Chinese Journal of Geological Hazard and Control, 2022, 33(1): 123-131. (in Chinese with English abstract) doi: 10.16031/j.cnki.issn.1003-8035.2022.01-15
[16] 韩用顺,孙湘艳,刘通,等. 基于证据权-投影寻踪模型的藏东南地质灾害易发性评价[J]. 山地学报,2021,39(5):672 − 686. [HAN Yongshun,SUN Xiangyan,LIU Tong,et al. Susceptibility evaluation of geological hazards based on evidence weight-projection pursuit model in southeast Tibet,China[J]. Mountain Research,2021,39(5):672 − 686. (in Chinese with English abstract) doi: 10.16089/j.cnki.1008-2786.000629
HAN Yongshun, SUN Xiangyan, LIU Tong, et al. Susceptibility evaluation of geological hazards based on evidence weight-projection pursuit model in southeast Tibet, China[J]. Mountain Research, 2021, 39(5): 672-686. (in Chinese with English abstract) doi: 10.16089/j.cnki.1008-2786.000629
[17] 祁于娜,王磊. 层次分析-熵值定权法应用于山区城镇地质灾害易发性评价[J]. 测绘通报,2021(6):112 − 116. [QI Yuna,WANG Lei. Application of AHP-entropy weight method in hazards susceptibility assessment in mountain town[J]. Bulletin of Surveying and Mapping,2021(6):112 − 116. (in Chinese with English abstract) doi: 10.13474/j.cnki.11-2246.2021.0187
QI Yuna, WANG Lei. Application of AHP-entropy weight method in hazards susceptibility assessment in mountain town[J]. Bulletin of Surveying and Mapping, 2021(6): 112-116. (in Chinese with English abstract) doi: 10.13474/j.cnki.11-2246.2021.0187
[18] 曹文霞. 基于组合赋权法的交口县地质灾害易发性评价研究[D]. 太原: 太原理工大学, 2021
CAO Wenxia. Study on geohazard susceptibility evaluation based on combination weighting method in Jiaokou Country[D]. Taiyuan: Taiyuan University of Technology, 2021. (in Chinese with English abstract)
[19] 孙长明,马润勇,尚合欣,等. 基于滑坡分类的西宁市滑坡易发性评价[J]. 水文地质工程地质,2020,47(3):173 − 181. [SUN Changming,MA Runyong,SHANG Hexin,et al. Landslide susceptibility assessment in Xining based on landslide classification[J]. Hydrogeology & Engineering Geology,2020,47(3):173 − 181. (in Chinese with English abstract) doi: 10.16030/j.cnki.issn.1000-3665.201906074
SUN Changming, MA Runyong, SHANG Hexin, et al. Landslide susceptibility assessment in Xining based on landslide classification[J]. Hydrogeology & Engineering Geology, 2020, 47(3): 173-181. (in Chinese with English abstract) doi: 10.16030/j.cnki.issn.1000-3665.201906074
[20] 姬永涛, 王鲜, 郝业, 等. 基于斜坡单元的陕西省城镇地质灾害风险调查评价——以西安市蒋村街道为例[J]. 灾害学, 2022,37(4): 211-219
JI Yongtao, WANG Xian, HAO Ye, et al. Investigation and evaluation of urban geological hazard risk based on slope unit in Shaanxi Province: A case study of Jiangcun street in Xi’an[J]. Disaster, 2022,37(4): 211-219. ( in Chinese with English abstract)
[21] 邹凤钗,冷洋洋,陶小郎,等. 基于斜坡单元的滑坡风险识别—以贵州万山浅层土质斜坡为例[J]. 中国地质灾害与防治学报,2022,33(3):114 − 122. [ZOU Fengchai,LENG Yangyang,TAO Xiaolang,et al. Landslide hazard identification based on slope unit:A case study of shallow soil slope in Wanshan,Guizhou Province[J]. The Chinese Journal of Geological Hazard and Control,2022,33(3):114 − 122. (in Chinese with English abstract)
ZOU Fengchai, LENG Yangyang, TAO Xiaolang, et al. Landslide hazard identification based on slope unit: a case study of shallow soil slope in Wanshan, Guizhou Province[J]. The Chinese Journal of Geological Hazard and Control, 2022, 33(3): 114-122. (in Chinese with English abstract)
[22] 王家柱, 高延超, 铁永波, 等. 基于斜坡单元的山区城镇滑坡灾害易发性评价——以康定为例[J]. 沉积与特提斯地质: 1 − 17(2021-05-10)[2022-07-10].
WANG Jiazhu, GAO Yanchao, TIE Yongbo, et al. Evaluation of landslide hazard susceptibility in mountainous towns based on slope element: A case study of Kangding City[J]. Sedimentary and Tethyan Geology: 1 − 17(2021-05-10)[2022-07-10]. DOI: 10.19826/j.cnki.1009-3850.2021.03001.( in Chinese with English abstract)
[23] 胡瑞林,陈平,庄茂国,等. “坡长制斜坡地质灾害防治体系”的建立与技术要点[J]. 工程地质学报,2020,28(4):748 − 761. [HU Ruilin,CHEN Ping,ZHUANG Maoguo,et al. Establishment and technical essentials of slope-geohazard prevention system of slope-unit administrant[J]. Journal of Engineering Geology,2020,28(4):748 − 761. (in Chinese with English abstract) doi: 10.13544/j.cnki.jeg.2020-057
HU Ruilin, CHEN Ping, ZHUANG Maoguo, et al. Establishment and technical essentials of slope-geohazard prevention system of slope-unit administrant[J]. Journal of Engineering Geology, 2020, 28(4): 748-761. (in Chinese with English abstract) doi: 10.13544/j.cnki.jeg.2020-057
[24] 申泽西,张强,吴文欢,等. 青藏高原及横断山区地质灾害易发区空间格局及驱动因子[J]. 地理学报,2022,77(5):1211 − 1224. [SHEN Zexi,ZHANG Qiang,WU Wenhuan,et al. Spatial pattern and attribution analysis of the regions with frequent geological disasters in the Tibetan Plateau and Hengduan mountains[J]. Acta Geographica Sinica,2022,77(5):1211 − 1224. (in Chinese with English abstract) doi: 10.11821/dlxb202205012
SHEN Zexi, ZHANG Qiang, WU Wenhuan, et al. Spatial pattern and attribution analysis of the regions with frequent geological disasters in the Tibetan Plateau and Hengduan Mountains[J]. Acta Geographica Sinica, 2022, 77(5): 1211-1224. (in Chinese with English abstract) doi: 10.11821/dlxb202205012
[25] 杨硕,李德营,严亮轩,等. 基于随机森林模型的乌江高陡岸坡滑坡地质灾害易发性评价[J]. 安全与环境工程,2021,28(4):131 − 138. [YANG Shuo,LI Deying,YAN Liangxuan,et al. Landslide susceptibility assessment in high and steep bank slopes along Wujiang River based on random forest model[J]. Safety and Environmental Engineering,2021,28(4):131 − 138. (in Chinese with English abstract) doi: 10.13578/j.cnki.issn.1671-1556.20200956
YANG Shuo, LI Deying, YAN Liangxuan, et al. Landslide susceptibility assessment in high and steep bank slopes along Wujiang River based on random forest model[J]. Safety and Environmental Engineering, 2021, 28(4): 131-138. (in Chinese with English abstract) doi: 10.13578/j.cnki.issn.1671-1556.20200956
[26] 吴润泽,胡旭东,梅红波,等. 基于随机森林的滑坡空间易发性评价:以三峡库区湖北段为例[J]. 地球科学,2021,46(1):321 − 330. [WU Runze,HU Xudong,MEI Hongbo,et al. Spatial susceptibility assessment of landslides based on random forest:A case study from Hubei section in the Three Gorges Reservoir area[J]. Earth Science,2021,46(1):321 − 330. (in Chinese with English abstract)
WU Runze, HU Xudong, MEI Hongbo, et al. Spatial susceptibility assessment of landslides based on random forest: a case study from Hubei section in the Three Gorges Reservoir area[J]. Earth Science, 2021, 46(1): 321-330. (in Chinese with English abstract)
[27] 王存智,张炜,李晨冬,等. 基于GIS和层次分析法的沙溪流域滑坡地质灾害易发性评价[J]. 中国地质调查,2022,9(5):51 − 60. [WANG Cunzhi,ZHANG Wei,LI Chendong,et al. Vulnerability evaluation of landslide geological disasters in Shaxi Basin based on GIS and analytic hierarchy process[J]. Geological Survey of China,2022,9(5):51 − 60. (in Chinese with English abstract)
[WANG Cunzhi, ZHANG Wei, LI Chendong, et al. Vulnerability evaluation of landslide geological disasters in Shaxi Basin based on GIS and analytic hierarchy process[J]. Geological Survey of China, 2022, 9(5): 51-60.(in Chinese with English abstract)
[28] 黄敬军,甘义群,缪世贤,等. 江苏省地质环境区划评价指标体系初步研究[J]. 中国地质,2011,38(6):1599 − 1606. [HUANG Jingjun,GAN Yiqun,MIAO Shixian,et al. A preliminary study of the evaluation index system for geo-environment regionalization in Jiangsu[J]. Geology in China,2011,38(6):1599 − 1606. (in Chinese with English abstract)
[HUANG Jingjun, GAN Yiqun, MIAO Shixian, et al. A preliminary study of the evaluation index system for geo-environment regionalization in Jiangsu[J]. Geology in China, 2011, 38(6): 1599-1606.(in Chinese with English abstract)
[29] 刘磊,殷坤龙,张俊. 三峡库区万州主城区第四系堆积层厚度的估算方法及应用[J]. 地质科技情报,2016,35(1):177 − 183. [LIU Lei,YIN Kunlong,ZHANG Jun. Estimation method of the quaternary deposits thickness and its application in Wanzhou central district,Three Gorges Reservoir region[J]. Geological Science and Technology Information,2016,35(1):177 − 183. (in Chinese with English abstract)
LIU Lei, YIN Kunlong, ZHANG Jun. Estimation method of the quaternary deposits thickness and its application in Wanzhou central district, Three Gorges Reservoir region[J]. Geological Science and Technology Information, 2016, 35(1): 177-183. (in Chinese with English abstract)
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