11月8日，承建拉脊山隧道工程的中铁十局西北公司施工人员在贯通的右幅隧道前欢呼雀跃。当日，青海首条高海拔超长公路隧道——青海西久公路拉脊山隧道实现全面贯通。拉脊山隧道属于高海拔地区的双洞隧道，平均海拔超过3200米，隧道全长超过11公里，总投资8亿多元。隧道工程施工现场空气稀薄，环境恶劣，地质十分复杂，施工难度很大。隧道工程建成后，对促进西宁与青海南部牧区的经济联系，推动民族地区经济社会发展具有重要意义。新华社记者 侯德强 摄     On November 8th,For the construction of the LaJiShan tunnel engineering of China railway bureau of ten northwest company construction personnel in both of the right picture before tunnel joy.On that day,Qinghai first high altitude long highway tunnel in qinghai province, west long highway tunnel LaJiShan realize comprehensive breakthrough.LaJiShan tunnel belongs to high altitude areas of the double hole tunnel,The average elevation of more than 3200 meters,Tunnel length more than 11 km,With a total investment of 800 million yuan.Tunnel engineering construction site thin air,Bad environment,Very complex geological,Construction difficult.After the completion of tunnel engineering,To promote the xining in qinghai province and southern pastoral areas economic ties,To promote economic and social development in national regions have important significance.Xinhua news agency reporters HouDeJiang perturbation

    11月8日，承建拉脊山隧道工程的中铁十局西北公司施工人员在施工现场庆祝右幅隧道贯通。新华社记者 侯德强 摄     On November 8th,For the construction of the LaJiShan tunnel engineering of China railway bureau of ten northwest company construction personnel in the construction site to celebrate the right picture of tunnel breakthrough.Xinhua news agency reporters HouDeJiang perturbation