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新华社北京7月2日电 记者从中国中铁股份有限公司获悉,经过1100余名建设者历时近三年的艰苦施工,由中铁开发投资集团、中铁隧道局集团承建的勐绿高速公路项目最长隧道——大梁山隧道2日实现双线贯通。
据中铁隧道局集团该项目负责人介绍,大梁山隧道位于云南省红河州境内,是勐绿高速公路项目关键控制性工程之一。隧道右线长5500米,左线长5493米,属特长隧道,最大埋深达到724米。自开工建设以来,施工团队先后攻克了围岩复杂多变、长距离通风及反坡排水、复杂地质高温作业等多项施工难题。
勐绿高速公路起于云南西双版纳州勐腊县,止于红河州绿春县城,路线主线全长210.72公里,是云南省高速公路网的重要组成部分。
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