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    戴勇,孟庆凯,陈世泷,等,2024. 基于BPNN-SHAP模型的滑坡危险性评价:以伊犁河流域为例[J]. 沉积与特提斯地质,44(3):534−546. DOI: 10.19826/j.cnki.1009-3850.2024.07006
    引用本文: 戴勇,孟庆凯,陈世泷,等,2024. 基于BPNN-SHAP模型的滑坡危险性评价:以伊犁河流域为例[J]. 沉积与特提斯地质,44(3):534−546. DOI: 10.19826/j.cnki.1009-3850.2024.07006
    DAI Y,MENG Q K,CHEN S L,et al.,2024. Landslide hazard evaluation based on BPNN-SHAP model: A case study of the Yili River Basin, Xinjiang Province[J]. Sedimentary Geology and Tethyan Geology,44(3):534−546. DOI: 10.19826/j.cnki.1009-3850.2024.07006
    Citation: DAI Y,MENG Q K,CHEN S L,et al.,2024. Landslide hazard evaluation based on BPNN-SHAP model: A case study of the Yili River Basin, Xinjiang Province[J]. Sedimentary Geology and Tethyan Geology,44(3):534−546. DOI: 10.19826/j.cnki.1009-3850.2024.07006

    基于BPNN-SHAP模型的滑坡危险性评价:以伊犁河流域为例

    Landslide hazard evaluation based on BPNN-SHAP model: A case study of the Yili River Basin, Xinjiang Province

    • 摘要: 为进一步提高滑坡危险性预测模型精度、增强模型可解释性,本文以新疆伊犁河流域为研究区,选取8个影响滑坡发生的危险性因子,在反向传播神经网络(BPNN)基础上,借鉴博弈论思想,构建一种可解释BP神经网络模型(BPNN-SHAP),解决神经网络滑坡危险性评价的“黑箱”问题。将数据集分为70%训练集和30%测试集,采用5折交叉验证提高模型稳定性,对比深度神经网络(DNN)、随机森林(RF)和逻辑回归(LR)3个模型的评价精度,并探讨BPNN-SHAP预测结果的可解释性,完成区域滑坡危险性评价。研究结果表明:相较于其他模型,BPNN-SHAP模型的5个精度评价指标均为最高,分别是:准确率(A)=0.904、精准度(P)=0.911、召回率(R)=0.919、F1分数(F1Score)=0.915、曲线下面积(SAUC)=0.901;研究区滑坡极高、高危险区分别占比11.96%、15.53%,其中新源县和巩留县极高、高危险区占比最高,分别为51.1%、45.6%;滑坡主控因子为高程、坡度、降雨量和峰值地面加速度(PGA),定量揭示高程在15002000 m、坡度大于14°、年降雨量在260~310 mm、PGA大于0.23 g的区域对滑坡发生起促进作用,表明该区域滑坡可能为高程和坡度主控的降雨型、地震型滑坡。本研究方法可为滑坡危险性评价提供新的技术参考,为伊犁河流域防灾减灾韧性建设提供理论支撑。

       

      Abstract: To further improve the accuracy of landslide hazard prediction models and enhance their interpretability, this study selected 8 influencing factors of landslide occurrence, taking the Yili River Basin, Xinjiang province as an example. An interpretable BPNN-SHAP model, based on the back propagation neural network (BPNN) model and the game theory with the aim of addressing the 'black box' issue, was constructed. Firstly, the dataset was divided into 70% training set and 30% test set, and 5-fold cross-validation was used to enhance the robustness of the BPNN-SHAP model. Then, the evaluation accuracy of this model was compared with three other models: Deep Neural Network (DNN), Random Forest (RF), and Logistic Regression (LR). Finally, regional landslide hazard assessment was completed, and the interpretability of BPNN-SHAP was also discussed. The results showed that the BPNN-SHAP model achieved the highest statistical values in the following metrics: Accuracy (A)=0.904, Precision (P)=0.911, Recall (R)=0.919, F1Score=0.915, and SAUC=0.905. The very high and high danger areas for landslides in the study region accounted for 11.96% and 15.53%, respectively. Among these regions, Xinyuan and Nileke County occupy the highest proportions, at approximately 51.1% and 45.6%, respectively. The primary controlling factors for landslides were elevation, slope, rainfall, and peak ground acceleration (PGA). Specifically, areas with an elevation of 1500 m to 2000 m, slopes greater than 14°, annual rainfall between 260 mm and 310 mm, and PGA greater than 0.23 g are prone to landslides, indicating that the predominant types of landslides are rainfall-induced and earthquake-induced. Our research method is expected to provide a new technical reference for landslide hazard assessment and theoretical support for disaster prevention, mitigation, and resilience construction in the Yili River Basin.

       

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