| 张华湘,孙乾征,樊善兴,杨子林.滑坡易发性评价方法和精度比较——以贵州省大方县为例[J].贵州地质,2023,40(3):302-309, 295 |
| 滑坡易发性评价方法和精度比较——以贵州省大方县为例 |
| Evaluation Methods and Accuracy Comparison of Landslide Susceptibility——Dafang County of Guizhou Province is Taken as an Example |
| 投稿时间：2023-03-23 |
| DOI： |
| 中文关键词: 滑坡 易发性评价 信息量模型 层次分析法 精度 影响因子 |
| 英文关键词:Landslide Susceptibility assessment Information quantity model AHP Precision Impact factor |
| 基金项目:贵州省地质矿产勘查开发局地质科学技术研究项目([2021]21)。 |
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| 中文摘要: |
| 近年来贵州省突发性滑坡地质灾害时有发生，除在册滑坡隐患外，还有不少斜坡存在着滑坡的孕灾环境条件，通过新一轮的地质灾害风险评价发现，选用不同的风险评价体系对地质灾害易发性的影响很大，从而影响地质灾害防治、国土空间规划和政府决策等基础数据。本次以大方县滑坡数据为例，选取与滑坡相关的7个影响因子:坡度、坡向、相对高差、工程地质岩组、距水系距离、距构造距离以及土地利用类型，采用层次分析法(AHP)、信息量模型(I)及耦合模型(AHP-I)对研究区进行滑坡易发性评价，并采用滑坡点频率统计和成功率曲线(ROC)对3种模型的评价精度进行检验。通过比较，选取精度高的耦合模型(AHP-I)作为滑坡易发性评价方法，从而能更加精确地评价大方县的滑坡易发性，为山区县级区域滑坡灾害的防灾减灾提供决策依据与参考。 |
| 英文摘要: |
| In recent years，geological disasters of sudden landslides have occurred frequently in Guizhou provinceBesides the registered potential hazards of landslides，there are also many slopes with disaster-generating environmental conditions，different risk assessment systems have great influence on geological hazard susceptibility，which affects basic data such as geological hazard prevention，Land Space Planning and government decision-makingThis time take the large direction landslide data as an example，seven factors related to landslides were selected:slope，aspect，relative elevation difference，engineering geological rock group，distance from water system，distance from structure and land use type，AHP，information quantity model(I)and coupling model(AHP-I)were used to evaluate the landslide susceptibility in the study area，the evaluation accuracy of the three models is tested by using landslide frequency statistics and success rate curve(Roc)By comparison，the high-precision coupling model(AHP-I)is selected as the method of landslide vulnerability evaluation，so that the landslide vulnerability of Dafang County can be evaluated more accurately，it can provide decision-making basis and reference for landslide disaster prevention and reduction in mountain area |
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