Basic characteristics and susceptibility evaluation of geological hazards in Shifang City, Sichuan Province
The fine-scale investigation and evaluation of large-scale geological disasters are gradually being carried out. However, there are discrepancies between the existing susceptibility evaluation results and actual work. Exploring how to accurately obtain the susceptibility results of regional geologic...
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Editorial Office of The Chinese Journal of Geological Hazard and Control
2024-12-01
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| Series: | Zhongguo dizhi zaihai yu fangzhi xuebao |
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| Online Access: | https://www.zgdzzhyfzxb.com/en/article/doi/10.16031/j.cnki.issn.1003-8035.202306002 |
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| author | Xirui CHEN Siyao CHEN Jianhong YANG Hongqiang LIU Zhaoping YUAN Guobao ZHU Xiaowen XIE Guojun CAI |
| author_facet | Xirui CHEN Siyao CHEN Jianhong YANG Hongqiang LIU Zhaoping YUAN Guobao ZHU Xiaowen XIE Guojun CAI |
| author_sort | Xirui CHEN |
| collection | DOAJ |
| description | The fine-scale investigation and evaluation of large-scale geological disasters are gradually being carried out. However, there are discrepancies between the existing susceptibility evaluation results and actual work. Exploring how to accurately obtain the susceptibility results of regional geological disasters is worth investigating. Taking Shifang City as an example, this study conducted field investigations based on slope units and continuously revised them. Based on the survey results, ten evaluation factors were selected through principal component analysis, correlation analysis and multicollinearity analysis. The information-logistic regression model is used to compare and analyze the susceptibility evaluation results of grid units and slope units. Finally, the susceptibility results of slope units were revised based on field survey data. The main conclusions are as follows: (1) The overall scale of geological disasters in Shifang City is relatively small, and susceptibility is mainly influenced by curvature, vegetation coverage, and roads. (2) The rationality and accuracy of grid units (AUC = 0.876 ) are higher than those of the slope unit. However, the results of grid units are fragmented and difficult to apply, while slope units have more high susceptibility areas and poor accuracy (AUC = 0.825). (3) Based on the field investigation, the susceptibility zoning of slope unit is revised. The proportions of high susceptibility, medium susceptibility, and low/non-susceptibility areas are 13.48%, 15.31%, and 71.21%, respectively, reducing the difficulty of control and matching the accuracy of field investigation results. The research results and evaluation process can guide local risk control work and provide references for similar studies. |
| format | Article |
| id | doaj-art-e2ed60460727446b836604681f1a8067 |
| institution | DOAJ |
| issn | 1003-8035 |
| language | zho |
| publishDate | 2024-12-01 |
| publisher | Editorial Office of The Chinese Journal of Geological Hazard and Control |
| record_format | Article |
| series | Zhongguo dizhi zaihai yu fangzhi xuebao |
| spelling | doaj-art-e2ed60460727446b836604681f1a80672025-08-20T03:21:32ZzhoEditorial Office of The Chinese Journal of Geological Hazard and ControlZhongguo dizhi zaihai yu fangzhi xuebao1003-80352024-12-0135615316310.16031/j.cnki.issn.1003-8035.202306002202306002Basic characteristics and susceptibility evaluation of geological hazards in Shifang City, Sichuan ProvinceXirui CHEN0Siyao CHEN1Jianhong YANG2Hongqiang LIU3Zhaoping YUAN4Guobao ZHU5Xiaowen XIE6Guojun CAI7Regional Geological Survey Team of Sichuan Bureau of Geology and Mineral Exploration and Development, Chengdu, Sichuan 610213, ChinaRegional Geological Survey Team of Sichuan Bureau of Geology and Mineral Exploration and Development, Chengdu, Sichuan 610213, ChinaRegional Geological Survey Team of Sichuan Bureau of Geology and Mineral Exploration and Development, Chengdu, Sichuan 610213, ChinaRegional Geological Survey Team of Sichuan Bureau of Geology and Mineral Exploration and Development, Chengdu, Sichuan 610213, ChinaRegional Geological Survey Team of Sichuan Bureau of Geology and Mineral Exploration and Development, Chengdu, Sichuan 610213, ChinaRegional Geological Survey Team of Sichuan Bureau of Geology and Mineral Exploration and Development, Chengdu, Sichuan 610213, ChinaRegional Geological Survey Team of Sichuan Bureau of Geology and Mineral Exploration and Development, Chengdu, Sichuan 610213, ChinaState Key Laboratory of Geological Disaster Prevention and Geological Environment Protection, Chengdu University of Technology, Chengdu, Sichuan 610059, ChinaThe fine-scale investigation and evaluation of large-scale geological disasters are gradually being carried out. However, there are discrepancies between the existing susceptibility evaluation results and actual work. Exploring how to accurately obtain the susceptibility results of regional geological disasters is worth investigating. Taking Shifang City as an example, this study conducted field investigations based on slope units and continuously revised them. Based on the survey results, ten evaluation factors were selected through principal component analysis, correlation analysis and multicollinearity analysis. The information-logistic regression model is used to compare and analyze the susceptibility evaluation results of grid units and slope units. Finally, the susceptibility results of slope units were revised based on field survey data. The main conclusions are as follows: (1) The overall scale of geological disasters in Shifang City is relatively small, and susceptibility is mainly influenced by curvature, vegetation coverage, and roads. (2) The rationality and accuracy of grid units (AUC = 0.876 ) are higher than those of the slope unit. However, the results of grid units are fragmented and difficult to apply, while slope units have more high susceptibility areas and poor accuracy (AUC = 0.825). (3) Based on the field investigation, the susceptibility zoning of slope unit is revised. The proportions of high susceptibility, medium susceptibility, and low/non-susceptibility areas are 13.48%, 15.31%, and 71.21%, respectively, reducing the difficulty of control and matching the accuracy of field investigation results. The research results and evaluation process can guide local risk control work and provide references for similar studies.https://www.zgdzzhyfzxb.com/en/article/doi/10.16031/j.cnki.issn.1003-8035.202306002detailed investigationsusceptibility evaluationinformation contentlogistic regression modelanalysis of relationship |
| spellingShingle | Xirui CHEN Siyao CHEN Jianhong YANG Hongqiang LIU Zhaoping YUAN Guobao ZHU Xiaowen XIE Guojun CAI Basic characteristics and susceptibility evaluation of geological hazards in Shifang City, Sichuan Province Zhongguo dizhi zaihai yu fangzhi xuebao detailed investigation susceptibility evaluation information content logistic regression model analysis of relationship |
| title | Basic characteristics and susceptibility evaluation of geological hazards in Shifang City, Sichuan Province |
| title_full | Basic characteristics and susceptibility evaluation of geological hazards in Shifang City, Sichuan Province |
| title_fullStr | Basic characteristics and susceptibility evaluation of geological hazards in Shifang City, Sichuan Province |
| title_full_unstemmed | Basic characteristics and susceptibility evaluation of geological hazards in Shifang City, Sichuan Province |
| title_short | Basic characteristics and susceptibility evaluation of geological hazards in Shifang City, Sichuan Province |
| title_sort | basic characteristics and susceptibility evaluation of geological hazards in shifang city sichuan province |
| topic | detailed investigation susceptibility evaluation information content logistic regression model analysis of relationship |
| url | https://www.zgdzzhyfzxb.com/en/article/doi/10.16031/j.cnki.issn.1003-8035.202306002 |
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