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基于震裂损伤程度的公路崩塌识别方法

, PP. 45-51

Keywords: 道路工程,识别,层次分析法,影响因素,评价

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Abstract:

震后地震区公路沿线发育的地质灾害主要以崩塌灾害为主,不仅发生频率高,而且规模大、破坏强。根据实地调研震后公路沿线崩塌灾害的发育特征,选择对崩塌识别的主要影响因素进行了分析。选取主控结构面倾角、地形坡度、结构面特性、凹腔发育特征、岩性及组合特征、岩体结构和震裂损伤程度7个因素作为崩塌识别的基本指标,采用层次分析法半定量地研究了指标之间相互作用关系对崩塌识别的影响权重和指标重要性程度。提出了公路崩塌识别的崩塌判别指数CDI方法,建立了震后公路崩塌的识别体系。该识别体系运用到公路沿线崩塌隐患点的定量评价与现场的定性分析总体一致,表明该识别体系是对震后公路崩塌进行快速识别的有效方法。

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