
9月17日,太原西北二环高速公路重点控制性工程之一的牛金山隧道左右洞累计施工均突破1000米。
牛金山隧道是西北二环高速公路重要控制性工程,连接阳曲县大盂镇和东黄水镇,隧道内设计时速80公里/小时,隧道全长6.6公里,分为左洞和右洞,各有3个车道,最高行车速度100公里/小时。其中,左洞往西延伸至静乐县方向,右洞往东延伸至阳泉方向。
隧道进口端地质环境较复杂,隧道内左、右洞各有长200米的活动性断层破碎带,施工难度很大,技术要求极高。西北二环ZH11标段项目部严控安全步距,根据地质情况,采取多种工艺动态调整,确保隧道的施工安全;邀请隧道专家,及时制订方案,提高工效;施工人员通过对数据分析整理汇总,提供技术支撑,确保施工如期进行。
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