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Back西香高速盐源隧道双洞掘进均过半 预计2029年通车
西香高速盐源隧道双洞掘进均过半 预计2029年通车
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中国新闻网yesterdayInfrastructure3 min readChina

西香高速盐源隧道双洞掘进均过半 预计2029年通车

盐源隧道全长约14.15公里,是西香高速全线最长隧道,也是目前国内在建第四长高速公路隧道。

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9月16日,G7611西昌至香格里拉高速公路盐源隧道双洞掘进均过半。该隧道全长约14.15公里,是国内在建第四长高速公路隧道,预计2029年建成通车。

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Why It Matters

西香高速全长233.13公里,桥隧比达73.4%,双向四车道,设计时速80公里。

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中新网成都9月16日电 (记者 刘忠俊 王鹏)9月16日,G7611西昌至香格里拉(四川境)高速公路(以下简称“西香高速”)盐源隧道双洞掘进均过半。该隧道全长约14.15公里,是西香高速全线最长隧道,也是目前国内在建第四长高速公路隧道。

西香高速盐源隧道双洞掘进过半现场。蜀道高速集团供图

盐源隧道位于四川省凉山州盐源县润盐镇北山村境内,海拔约2500米,最大埋深约1090米,是西香高速从西昌通向盐源的核心控制性工程。

据了解,该隧道地处横断山脉核心区域,地形切割强烈,山势陡峭,沿线穿越断层破碎带、富水软岩、岩溶等不良地质,施工中面临围岩大变形、涌突水、岩爆等多重风险。同时,高寒、高海拔气候与复杂地质叠加,进一步加大了施工难度。

“把能上的机械尽量用上,把人从最吃力、最危险的施工现场换出来。”四川路桥集团西香高速TJ5标总工汪大海称,面对地质复杂、围岩多变、作业空间受限等难题,施工现场大力推行机械化配套施工,降低人工作业强度与安全风险。掌子面前,采取“超前地质预报、实时监控量测、动态优化设计”。“地质雷达扫一遍,超前水平钻探打进去,前后做了200多次超前探测,就为把掌子面前方那几十米岩层看个清楚。”汪大海表示,隐患早一步发现、早一步处置,事故的苗头就少一分。“隧道每掘进一米,背后都是施工人员在高寒和困难中的一次次较真。”

与此同时,洞外施工便道的扬尘,有雾化设施压着;工地废水进沉淀池、清水回用池,滤净了再抽回场地除尘。“挖出的洞渣也没有白白丢掉。”汪大海称,借BIM正向设计把路线和施工组织理顺,一部分洞渣就近加工,填进路基。少弃一方渣,山下的小高山就少受一分打扰。

西香高速盐源隧道洞口。蜀道高速集团供图

西香高速全长233.13公里,桥隧比达73.4%,双向四车道,设计时速80公里,预计2029年建成通车。

据悉,作为大香格里拉旅游环线的一环,西香高速建成后,盐源、木里两县将告别不通高速的历史;大山里的苹果、核桃等农特产品出山的路更加便捷;泸沽湖的山水,也将迎来更多寻访的游客。

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AI outlook — possibilities, not facts

  • 西香高速预计2029年建成通车

    Likely · Within months

Open Questions

  • 隧道后续施工将面临哪些具体地质难关?
  • 工程能否按期在2029年通车?

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This article was originally published by 中国新闻网.

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