冲沟区隧道洞口段暗洞明作施工技术

Construction Technology of Open Hole in Tunnel Section of Gully Area

由于山岭地形及周边环境的约束,经常遇到隧道洞口段位于冲沟和围岩破碎的浅埋不良地段,若采取的施工方法和安全技术措施不当,极易出现泥石流、垮塌,所造成的人身伤害、经济损失及工期延误等是无法弥补和度量的。本技术采用暗洞明作施工方法,充分考虑增强山体自身稳定性,防止边仰坡滑移。

Due to the constraints of mountain terrain and surrounding environment,frequent encounters of tunnel openings are located in shallow buried areas with broken gullies and surrounding rocks,if the construction method and safety technical measures are not adopted properly,extremely prone to debris flow and collapse,the personal injuries,economic losses,and delays in construction cannot be compensated and measured.This technology uses a dark hole to make the construction method,fully consider enhancing the stability of the mountain,prevent side slope slip.