【摘要】 以荆竹岭隧道为工程背景,通过分析石膏地层的工程特性,详细介绍了荆竹岭隧道石膏地层的施工技术。隧道施工中,近似椭圆形衬砌断面,可缩性钢架为骨架的支护措施,以及超短台阶法为主体的施工方法等技术的综合运用,有效控制了隧道施工中围岩的膨胀变形,为膨胀性围岩隧道工程设计及施工积累了经验。更多还原

【Abstract】 Based on the engineering background of Jingzhuling tunnel, by studying the characters of anhydrite, this paper describes the tunnel construction technology in anhydrite stratum in detail. During the construction, the comprehensive application of measures such as oval model lining trans-section, compressible bracket supporting technology and super-short step based construction methods, etc, not only achieved an effective control over the swelling deformation of the surrounding rock, but also accumulated experience for the design and construction of tunnels in swelling rocks.更多还原