8月25日，来自全国各地的公路建设专家、技术人员在中铁十局西北公司承建的拉脊山隧道工地现场观摩。 On August 25,，From all parts of the country highway construction experts、Technical personnel in China railway bureau of ten northwest company contracted to construct the LaJiShan tunnel on site viewing。

    经过5年的建设，青海首条高海拔超长公路隧道——青海西久公路拉脊山隧道近日实现左幅隧道贯通，隧道工程将于今年年底达到试通车条件。 After five years of construction，Qinghai first high altitude long highway tunnel in qinghai province, west long highway tunnel to realize LaJiShan recently left picture of tunnel breakthrough，Tunnel engineering by the end of the year to try to traffic condition。

    拉脊山隧道平均海拔超过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 LaJiShan tunnel average altitude 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

    8月25日，一辆施工人员用车驶经中铁十局西北公司承建的拉脊山隧道右洞。     On August 25,，A car transport, construction personnel designated by the China railway bureau of ten northwest company contracted to construct the LaJiShan tunnel right hole。新华社记者 侯德强 摄 Xinhua news agency reporters HouDeJiang perturbation

8月25日，一辆施工人员用车从已贯通的拉脊山隧道左洞驶出。 On August 25,，A car transport, construction personnel from already through the LaJiShan tunnel left hole to put off。新华社记者 侯德强 摄 Xinhua news agency reporters HouDeJiang perturbation