不同日降雨工况下万州区滑坡灾害危险性分析Landslide Hazard Analysis under Different Daily Rainfall Conditions in Wanzhou District
王芳;殷坤龙;桂蕾;陈丽霞;
摘要(Abstract):
以三峡库区万州区为例,选择具有代表性的地质环境指标,分析各指标等级,利用逻辑回归、支持向量机和决策树3种数理统计模型,计算全区滑坡灾害易发性程度,分析3种日降雨工况下滑坡的发生概率,得到各日降雨工况下万州区滑坡灾害危险性分布图。确定了支持向量机模型为万州区滑坡灾害易发性分析的最优模型;万州区滑坡灾害高易发区和高危险区主要表现出沿河道水系呈带状分布、沿高程垂直分布、在城镇区集中分布的特点;特定工况下,万州区滑坡灾害危险性随着日降雨量增大而增大。
关键词(KeyWords): 滑坡;易发性;危险性;支持向量机;万州区
基金项目(Foundation): 国家自然科学基金(41601563;41641012)
作者(Author): 王芳;殷坤龙;桂蕾;陈丽霞;
Email:
DOI: 10.19509/j.cnki.dzkq.2018.0126
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