论文部分内容阅读
中铁二十局集团承建的青藏铁路7标段工程,全长36.4km,合同投资8.46亿元,管区主要工程量:路基土方333万m~3,车站2座,隧道1座1338延米,特大桥3座3729延米,大中小桥35座4948延米,涵洞39座992横延米,铺架工期为2001年6月1日至2003年12月20日。 本标段位于青藏高原腹地,可可西里无人区的风火山地段,距格尔木市350 km,平均海拔4 800 m,最高海拔5010 m。该地区高寒缺氧,空气稀薄,自然条件极为恶劣,属典型的高原冰雪型气候,一年寒季长达7个月,年平均气温-7℃,最低气温-41℃,昼夜温差高达30℃左右,素
The 7th section of the Qinghai-Tibet Railway under construction by China Railway 20th Bureau Group is 36.4km in length with a contractual investment of 846 million yuan. The major works in the area include 2.33 million m 3 of earth and road embankment, 2 stations and 1 tunnel of 1338 meters Bridge 3 3729 Yanmi, Dazhong Xiao Bridge 35 4948 Yanmi, culvert 39 992 Wang Yan meters, laying period from June 1, 2001 to December 20, 2003. This section is located in the Fenghuoshan section in the hinterland of the Qinghai-Tibet Plateau and in the no-man's area of Hoh Xil, 350 km from Golmud, with an average elevation of 4 800 m and a maximum elevation of 5010 m. The area is characterized by cold anoxia, air thinning and extremely poor natural conditions. It is a typical plateau ice and snow climate with a cold season of 7 months a year, an annual average temperature of -7 ℃, a minimum temperature of -41 ℃ and a temperature difference between day and night of 30 ℃ About, prime