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本刊讯(黄仕科祖婧周娟张正)6月16日9时,由中铁二十三局集团四公司承建的四川汶川特大地震灾后重建最后一个攻坚堡垒工程、我国在建海拔最高公路隧道——雅克夏雪山隧道,在参战员工和当地各族群众的欢呼声、掌声和鞭炮的轰鸣声中,历经3年时间终于安全胜利贯通,并将于今年年底实现通车。雅克夏雪山隧道是我国目前在建的海拔最高的公路隧道,自然条件恶劣,高原高寒缺氧,氧气含量仅为平原的60%,气候多变,最低气温零下37.5℃,地质构造复杂,岩体极度破碎,裂隙发育,地下水极为丰富,岩体遇水极易软化、滑移导致坍塌,因氧气含量低,作业人员
At 0900 on June 16, the last fortified stronghold project to be rebuilt after the devastating earthquake in Wenchuan, Sichuan, which was undertaken by the Company No. 4 of the 23rd China Railway Construction Group Corporation, the highest elevation highway tunnel under construction in China - - In the roar of applause, applause and firecrackers from participating workers and local people of all ethnic groups, the Yaxha Snow Mountain Tunnel finally passed through three years of safety and will be opened to traffic by the end of this year. The Yaksha Snow Mountain Tunnel is the highest elevation road tunnel currently under construction in our country. The natural conditions are harsh. The plateau is cold and anoxic. The oxygen content is only 60% of the plain. The climate is variable. The minimum temperature is 37.5 ℃ and the geological structure is complicated. Extremely broken, fissures, groundwater is extremely rich, very easy to soften rock mass, slip caused collapse, due to low oxygen content, the operator