9月28日,由中国中铁广州工程局施工的北京国道109新线高速公路西胡林隧道右线顺利实现贯通。这是北京基础设施建设领域重点工程取得重大性进展。
北京国道109新线高速公路西胡林隧道右线全长521m,左线全长533m,在全线16座隧道中率先贯通。项目全线穿越28条不同的断层破碎带和富水区,地质情况复杂、施工难度大、地下水丰富,特别容易坍塌,局部围岩破碎地段像是在豆腐渣里打洞一样。针对隧道复杂的地质条件,施工单位采用地质超前预报、监控量测等信息化施工技术。
国道109新线高速公路是京西地区第一条高速公路,是北京市重点民生工程。线路全长65.4千米,计划于2023年底建成通车,将有效缓解京西地区交通压力,促进京津冀一体化,为绿水青山门头沟传统村落、非遗文化、红色旅游带来契机。
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