以永宁高速公路A8标莲花山隧道施工控制测量为背景,对洞内外导线布测对隧道贯通横向误差的影响进行了分析,阐述了洞内平面导线敷设方法,利用横洞增设第二导线闭合环来控制指导隧道掘进,提高了隧道控制测量精准度,该技术可为长大隧道施工控制测量提供借鉴与参考。 Taking the control and measuring of Lianhuashan Tunnel on the A8 Bend of Yongning Expressway as the background, the influence of the test of the inside and outside of the tunnel on the transverse runout of the tunnel was analyzed. The laying method of the plane conductor in the tunnel was described. To control and guide tunneling and improve the accuracy of tunnel control measurement. This technology can provide reference and reference for construction control and measurement of long and large tunnels.