11月3日，莱索托波利哈利输水隧洞建设项目出口TBM由敞开式掘进模式全面转入双护盾掘进模式，项目核心区段施工正式启动。
自出口TBM始发掘进以来，项目始终以“安全为先、质量优良、精益管理”为基本准则，成功攻克极破碎围岩喷锚支护、洞内轨道安装及大坡度物料运输等多项技术难题，施工效率持续攀升，单班进尺先后突破26米、31米、34米，最终创下单日61.7米的同直径双护盾TBM敞开式掘进施工新纪录，既保障了关键工期的按期实现，更进一步坚定了项目全体职工攻坚克难、不断突破的信心。
本次双护盾掘进任务总里程达33.7千米，项目共配置2台直径5.35米的双护盾TBM，分别从波利哈利进口与卡兹出口开展相向掘进作业。下一步，项目团队将继续秉持初心，担当作为，为实现项目高质量全线贯通的目标持续奋进。
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