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高速公路斜井进入主洞交叉口处多存在开挖断面大、断面变化频繁的特点,在大断面、高挑顶隧道交叉口施工过程中,由于隧道自身无结构承载,同时易对辅助坑道造成相当大的侧压力,造成施工时间长,安全风险大,和榆高速公路康家楼隧道通过采取矩形小断面垂直挑顶和弧形导坑短台阶法相结合,达到安全快速完成大断面交叉口处施工,供硬质岩隧道辅助坑道进入正洞交叉口的施工工程借鉴.“,”The inclined shaft used in high-way drilling into intersection of large section leads to large cross section and cross section changing frequently.During constructing in intersection with large section,with no structure to load and big lateral pressure,it easily makes construction time long and also has risks.Vertical ripping with rectangle light section construction and short step based construction with arc leading pit which are adopted in the Kangjialou tunnel of Heshun toYushe highway has realized construction in intersection of large-section safely and rapidly,which provide experience for construction in intersection of auxiliary gallery of hard rock.