中交二公局承建的蘭渝鐵路兩水隧道位于甘肅隴南市，主洞全長(zhǎng)4945.3米，隧道區(qū)地質(zhì)結(jié)構(gòu)復(fù)雜，水文地質(zhì)條件較差，施工中遇到的高地應(yīng)力條件下的軟巖大變形，被業(yè)內(nèi)專(zhuān)家稱(chēng)為“國(guó)內(nèi)罕見(jiàn)，世界難題”。
　　The Liangshui Tunnel of Lanzhou-Chongqing Railway is located in Longnan City, Gansu Province. The main tunnel is 4945.3m in length. The geological structure of the tunnel area is complex and the hydrogeological conditions are poor. The soft rock deformation under the condition of high ground stress encountered in construction is referred to as "a rare problem in China and a difficult problem in the world" by the experts in the industry.