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用信息价值和确定性因子模型评估通关区安地区的山体滑坡易感性
Dan Ding1,2, Yuting Wu3, Tianzhen Wu4
1321 Geological Team, Anhui Bureau of Geology and Mineral Resources, Tongling, 244033, Anhui, China.
Scientific reports
|April 10, 2025
概括
由于地质因素和施工,中国通关区的山体滑坡易感性在断层和道路附近很高. 确定因素 (CF) 模型有效地确定了针对性缓解努力的高风险区域.
科学领域:
- 地质科学 地质科学
- 地理危险 地区性危险
- 风险评估 风险评估
背景情况:
- 地质灾害,如山体滑坡,在全球范围内构成重大风险,造成经济损失,影响数百万人.
- 在中国安省通关区通灵市,山体滑坡是一个主要问题,威胁着基础设施和人类活动.
- 了解山体滑坡的易感性对于地方风险评估和全球灾害模式分析至关重要.
研究的目的:
- 为了评估中国安省通关区的山体滑坡易感性.
- 确定影响该地区滑坡发生的关键因素.
- 为了比较信息值和确定性因子 (CF) 模型在山体滑坡易感性映射中的有效性.
主要方法:
- 利用了七个影响因素:高度,斜率,角度和距离断层的距离.
- 应用信息价值模型和确定因素 (CF) 模型进行易感性评估.
- 在曲线下的使用面积 (AUC) 和接收器运行特征 (ROC) 曲线下评估模型性能.
主要成果:
- 滑坡集中在断层300米以内,以及在道路和建筑物附近的斜坡上,表明地质结构和人类活动的影响.
- 关区的很大一部分被归类为高度容易发生山体滑坡的地区,需要有针对性的缓解策略.
- 与信息价值模型相比,CF模型在评估山体滑坡易感性方面表现出更高的准确性.
结论:
- 断层和人类建筑活动是通关区山体滑坡的主要驱动因素.
- CF模型是一个可靠的工具,用于评估研究区域的山体滑坡易感性.
- 这些发现为类似地质环境中的危险减轻,预防和应急响应规划提供了关键的见解.
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