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地质通报  2009 

三峡引水工程秦巴段的主要工程地质问题

, PP. 651-658

Keywords: 三峡引水工程,区域工程地质条件,工程地质问题,活动断裂,岩爆,突水

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Abstract:

为了研究三峡引水工程秦巴段的重大工程地质问题,在区域工程地质条件和线路工程地质调查分析的基础上,利用工程地质类比法,重点分析评价了秦巴山区与活动断裂、深埋隧道建设相关的重大工程地质问题。初步揭示:①秦巴山区14条区域规模的断裂带主体走向近于东西向,与引水隧道走向大致垂直,现今活动差异明显,其中活动性较强、规模较大的大巴山弧形断裂、宁陕-栗扎坪断裂、石泉-安康断裂、三花石-汉王城断裂位于引水工程的关键部位,需要注意其引起的隧道突水和大变形灾害;②秦巴山区与深埋隧道相关的岩爆、突水灾害比较严重,特别是秦岭主峰附近的强岩爆、大巴山附近的断裂与岩溶相关的大规模突水灾害值得高度注意。

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