CAJ | 학술논문

随着我国高速铁路建设的发展,在施工中遇到隧道燕尾段的情况会越来越多,其特点是左右洞间距小、中间岩柱加固困难、后行隧道开挖对先行隧道影响大,安全质量控制难度大。向莆铁路赤岭隧道为燕尾式隧道,通过采用合理确定左右线的施工顺序和滞后距离、设对拉锚杆对中岩墙进行加固、严格控制开挖进尺和爆破效果等措施,安全顺利通过了小间距段。
수착아국고속철로건설적발전,재시공중우도수도연미단적정황회월래월다,기특점시좌우동간거소、중간암주가고곤난、후행수도개알대선행수도영향대,안전질량공제난도대。향보철로적령수도위연미식수도,통과채용합리학정좌우선적시공순서화체후거리、설대랍묘간대중암장진행가고、엄격공제개알진척화폭파효과등조시,안전순리통과료소간거단。
With the rapid development of the high-speed railway in our country,more and more swallow-tailed-type sections are faced with in the construction of tunnels,the characteristics of which are that the space between the right and left cavities is small,the strengthening of the mid-rock columns is difficult,the excavation of the following tunnel has a great effect on the advancing tunnel,and the safety and quality control is very difficult.The Red Mountain Tunnel of the Xiang-Pu Railway is a swallow-tailed-type tunnel.However,the excavation of the tunnel is safely and smoothly performed in the short-spaced sections of the tunnel only because some corresponding measures,such as reasonably choosing the right sequences of construction processes and lagging distances,providing opposite-pulling anchor bars to strengthen the mid-rock wall,and strictly control the drilling footage and the blasting effects,etc.,are adopted.