图为贵广铁路岩山隧道贯通仪式现场（8月25日摄）。经过3年零8个月的艰苦奋战，全长14．693千米的贵广铁路客运专线全线最长隧道岩山隧道于25日上午顺利实现安全贯通。它标志着贵广铁路客运专线建设取得突破性进展，为贵广铁路全线通车奠定了坚实的基础。贵广铁路客运专线全长857千米，是我国西部大开发战略实施中的一条连接祖国西南内陆与华南珠江三角经济带的重要客运专线。它北起贵阳，南至广州，沿线共设21个客运站，是西南地区首条设计时速不低于250公里的高标准铁路。据介绍，贵广铁路客运专线预计于2014年完工，按照设计，届时旅客坐火车从贵阳到广州将由目前的20个小时缩减至4个小时左右。新华社记者 陶亮 摄     The graph is your Canton railway YanShan tunnel through the ceremony（August 25 perturbation）。After three years and eight months of hard fighting，Total length of 14.693 km your Canton railway passenger dedicated line all the longest tunnel YanShan tunnel in the 25th morning smooth realization safety through。It marks the expensive Canton railway passenger dedicated line construction has made breakthrough progress，For your Canton railway was completed and opened to traffic has laid a solid foundation。Your Canton railway passenger dedicated line total length of 857 km，Is China's western development strategy of the implementation of a pipeline connecting the inland country southwest and south China pearl river delta economic zone of the important passenger dedicated line。It the guiyang north，South to guangzhou，Along a total of 21 passenger depot，Southwest is the first design speed of not less than 250 kilometers of high standard railway。According to introducing，Your Canton railway passenger dedicated line is scheduled to be completed in 2014，According to the design，The passenger train from guiyang to guangzhou by the current 20 hours reduced to 4 hours or so。Xinhua news agency reporters TaoLiang perturbation

    图为贵广铁路岩山隧道贯通仪式现场（8月25日摄）。新华社记者 陶亮 摄     The graph is your Canton railway YanShan tunnel through the ceremony（August 25 perturbation）。Xinhua news agency reporters TaoLiang perturbation

    全长14．693千米的岩山隧道一隅（8月25日摄）。新华社记者 陶亮 摄     Total length of 14.693 km YanShan tunnel corner（August 25 perturbation）。Xinhua news agency reporters TaoLiang perturbation