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云南柴石滩水库灌区工程隧洞施工岩溶暗河探测

Express Water Resources & Hydropower Information(2021)

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Abstract
云南柴石滩水库灌区工程隧洞施工开挖过程中揭露一超大溶洞,给隧洞施工带来了较大安全隐患及投资风险.分析了隧洞区工程地质及水文地质条件,基本查明了隧洞周边及洞内的岩溶暗河地质发育特征.采取了三维激光扫描仪测量岩溶空腔地形、地质雷达探测夹层岩体可靠性的联合探测方法,获取了岩溶暗河的三维结构和内部特征.有针对性地提出了洞轴线向右偏移的处理对策.处理方案实施后,隧洞开挖顺利、安全地穿越了岩溶暗河.
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