据《隧道工人报》报道:由三处有限公司兰临项目部承建的新七道梁隧道被列为甘肃省国家级重点科研项目。 新七道梁隧道为双线特长隧道,是我国西北地区埋深最大(最大埋深大于500m)、洞身最长(单洞长4000m)和断面最大的公路隧道之一,隧道位于中高海拔寒冷地区, According to “Tunnel Workers” reported: Lancong project by the three limited company construction of the new seven tunnel was listed as Gansu Province, a national key scientific research projects. The new Qiliangliang tunnel is a two-lane super long tunnel, which is one of the largest buried tunnels in the northwest of China (maximum buried depth is more than 500m), the longest cave body (4000m long) and the largest cross-section tunnel. ,