College of Resource and Environment Engineering,Guizhou University
Guangdong Provincial Key Lab of Geodynamics and Geohazards,School of Earth Science and Engineering,Sun Yat-Sen University
Power China Guiyang Engineering Corporation Co.,Ltd.
Guizhou Kaiyang Economic Development Industry Invest⁃ment and Development Co.,Ltd.

为探究地质灾害与红层地区风化调控作用的关系,以贵州省典型红层地区赤水市为研究区,选取太阳辐射、高程、坡度、地层分布、降雨量、NDVI、道路缓冲区和地形起伏度8个影响因子,引入皮尔森相关系数对影响因子进行共线性分析,采用CF模型、LR模型及CF与LR耦合模型在GIS平台上进行地质灾害易发性分析,并利用ROC曲线法对3种模型的精度进行检验。结果表明:3种模型的AUC值分别为0.854,0.875和0.905,其中,耦合模型AUC值最高,说明耦合模型评价精度更高,灾害易发性分区更准确。研究结果可为赤水市地质灾害预防工作与红层地区地质灾害易发性评价研究提供参考。

To explore the relationship between geological hazards and weathering regulation in red-bed areas,Chishui City,a typical red-bed area in Guizhou Province,was selected as the research area.Eight influenc⁃ing factors were selected,including solar radiation,elevation,slope,stratigraphic distribution,rainfall,NDVI,road buffer and topographic relief,and Pearson correlation coefficient was introduced to analyze the covari⁃ance of the selected influencing factors. The CF model,LR model and the coupling model of CF and LR were used to analyze the geological hazard susceptibility on GIS platform,and the accuracy of the three models was tested by ROC curve method.The results show that the AUC values(offline area) of the three models are 0.854,0.875,and 0.905,respectively. Among them,the coupled model has the highest AUC value,indicating higher evaluation accuracy of the coupled model and more accurate zoning of disaster sus⁃ceptibility.The research results can provide reference for the prevention of geological disasters in Chishui City and the evaluation of geological disaster susceptibility in the red-bed areas.

国家自然科学基金资助项目(42067046);贵州省科技厅研究项目(黔科合基础-ZK[2021]一般200)

0 引言
1 研究基础
1.1 研究区概况
1.2 数据来源
1.3 影响因子选择与分级
1.3.1 太阳辐射
1.3.2 高程
1.3.3 坡度
1.3.4 地层分布
1.3.5 降雨量
1.3.6 NDVI
1.3.7 道路缓冲区
1.3.8 地形起伏度
1.4 影响因子共线性分析
2 研究方法
2.1 确定性系数模型
2.2 逻辑回归模型
2.3 确定性系数与逻辑回归耦合模型
3 地质灾害易发性评价
3.1 基于确定性系数模型
3.2 基于逻辑回归模型
3.3 耦合模型
4 评价结果及精度检验
4.1 评价结果
4.2 精度检验
5 结论

工大学学报(自然科学版),2023,42(6):51-60.doi:10.16186/j.cnki.1673-9787.2021060082

CHENG Bin,YANG Genlan,QIN Yigen,et al.Disaster susceptibility evaluation in typical red-bed areas based on CF-LR coupling method:A case study of Chishui City[J].Journal of Henan Polytechnic University(Natural Science),2023,42(6):51-60.doi:10.16186/j.cnki.1673-9787.2021060082