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2011年12月24日,雅西高速公路关键控制性工程——大相岭泥巴山隧道左线成功安全贯通。至此,这条由中铁隧道股份有限公司承担施工的长达10 km的西南第一公路长大隧道正式双向贯通,雅西高速公路雅安境内路段已经成功实现连通。据了解,大相岭泥巴山隧道分为左右2线,左线长9 962 m,右线长10 007 m,该隧道也是目前西南地区在建最长、埋深全国最大
On December 24, 2011, the key control project of Iasi Expressway - the Daxiangling mud tunnel on the left lane was successfully completed. So far, this tunnel of 10 km southwest of the first large tunnel under construction undertaken by China Railway Tunnel Co., Ltd. has been formally bidirectionally connected, and the internal section of Ya’an Expressway in Ya’an has been successfully connected. It is known that the Mubashan tunnel in the Daxiangling Mountains is divided into 2 lines at left and right, the length of the left line is 9,962 m and the length of the right line is 10,007 m. The tunnel is also the longest under construction in the southwest region with the largest depth in the country