不同模型的滑坡易发性评价精度讨论

汪莹

汪莹.不同模型的滑坡易发性评价精度讨论[J].贵州地质,2022,39(2):144-151

不同模型的滑坡易发性评价精度讨论

Discussion on the Accuracy of Landslide Susceptibility Evaluation of Different Models

投稿时间：2022-01-04

DOI：

中文关键词: 滑坡易发性评价信息量模型确定性系数法频率比法

英文关键词:Landslide susceptibility assessment Information value model Certainty factor method Frequency ratio method

基金项目:

作者	单位
汪莹	1.贵州省地质矿产勘查开发局111地质大队，贵州贵阳 550008 2.贵州地质工程勘察设计研究院有限公司，贵州贵阳550008

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中文摘要:

为探讨不同滑坡易发性评价模型其评价结果的差异和评价精度，本文以贵州省桐梓县为研究区，选取坡度、斜坡结构、地形起伏度、工程地质岩组、距水系距离、距断层距离6个影响因子建立评价指标体系，分别采用信息量模型、确定性系数法、频率比法3种方法开展区域地质灾害易发性评价，并通过ROC曲线对评价结果进行精度验证。评价结果表明:信息量模型(AUC=0800)的评价精度优于确定性系数法(AUC=0784)和频率比法(AUC=0787)，因此信息量模型更适合于该区域的滑坡易发性评价。

英文摘要:

In order to explore the difference and accuracy of the evaluation results of different landslide susceptibility evaluation models，it took Tongzi County as the study area，selected six factors including slope，slope structure，topographic relief，engineering geological petrofabric，distance from fault，and distance from water system to establish an evaluation index systemIt used 3 evaluation models of the information value model，the certainty factor method and frequency ratio method to evaluate the landslide susceptibility in the study area，and use the Receiver Operating Characteristic (ROC) curve to test model accuracyThe results show that the evaluation accuracy of the information value model (AUC=0800) is better than that of the certainty factor method (AUC=0784) and the frequency ratio method (AUC=0787)As a consequence，the information value model is more suitable for landslide susceptibility evaluation in this area

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