关角隧道:在青藏“天路”开凿奇迹  

Guanjiao Tunnel:Creat Miracles on the Qinghai-Tibet "Heavenly Road"

作　　者：付惊群[1] 雒泽华[1] 

机构地区：[1]《建设机械技术与管理》编辑部

出　　处：《建设机械技术与管理》2013年第8期25-31,12,共7页Construction Machinery Technology & Management

摘　　要：2013年8月初，在中国大部分地区酷暑难耐的“炙热”中，我们从北京一路向西，来到位于西宁与格尔木之间的青藏复线关角隧道工地采访。Located in Tianjun County and Wulan County,Qinghai Province,the Guanjiao Tunnel of the Xining-Golmud No.2 Line on the Qinghai-Tibet Railway is 32.6 kilometers.The local elevation ranges from 3,200 to 4,400meters,which makes the tunnel currently the world's longest tunnel under construction in Asian high-altitude regions.The annual average local temperature is-0.5tC and spring is followed by fall.In addition to its high elevation,the geological and hydrogeological conditions are extremely complicated,and the region is sparsely populated.Because of the difficulty in construction and high volume of construction,the tunnel is a key controlled project of the Xining-Golmud No.2 Line on the Qinghai-Tibet Railway.Due to the investment,construction capacity and other restrictions,the original Qinghai-Tibet Railway has to take a roundabout way in the section of Guanjiao Mountain,which is the only way leading into Tibet from Qinghai.Since the section has numerous tortuous tracks and curves,it is known as 'big-bulb line'.The transport capacity is seriously restricted.According to design of the new Xining-Golmud Line,it will take the train only 20 minutes to go through the Guanjiao Mountain,while the time was two hours in the past.The significance is self-evident.Two sections starting respectively from the two ends of the tunnel,which is a key controlled project of the Xining-Golmud No.2 Line on the Qinghai-Tibet Railway,will be undertaken by the two most domestically and internationally prestigious organizations in the field of tunnel construction- China Railway 16th Bureau Group and China Railway Tunnel Group.The two organizations are the world's top 500 companies,as well as the 'trump card' of China Railway Construction Corporation and China Railway Group Limited in the field of tunnel construction,respectively.During the visit to the XGZHQ5-1 section undertaken by China Railway 16th Bureau Group,an in-depth exploration of the problems and achievements in the construction was made.

关 键 词：青藏 隧道 开凿 格尔木 

分 类 号：U455[建筑科学—桥梁与隧道工程]