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据国际商报网报道,2月26日,国家重点工程、西南出海大通道贵广铁路建设取得重大进展——中铁隧道集团承建的全长14637m的三都隧道全线胜利贯通。三都隧道位于贵州省黔南州都匀市和三都县境内,为单洞双线隧道,设计时速300km。隧道另有1座通风竖井、2座横洞、2条平导,横洞和平导总长达7877m。三都隧道穿越14条大断层破碎带,影响最宽的达450m;3条褶曲构
According to the website of International Business Daily, February 26, major progress has been made in the construction of key national projects and the construction of the Gui-Guang Railroad, a major thoroughfare in the south-west sea exit. The three-way tunnel with a total length of 14637m constructed by China Railway Tunnel Group has been successfully completed. Sandu Tunnel is located in Duyun City, Qiannan Prefecture and Sandu County, Guizhou Province, is a single-hole two-lane tunnel with a design speed of 300km. Another tunnel tunnel ventilation shaft, two horizontal holes, two flat lead, horizontal hole and the total length of 7877m. Sandu tunnel through 14 large fault zone, affecting the most wide of 450m; 3 fold structure