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Guanshan Extra-Long Tunnel on Tianshui-Pingliang Railway Built by China Railway Construction Corporation Completed

2015-08-10 716 0人评论

　　8月6日上午，中国铁建十九局集团承建的甘肃天水至平凉铁路关山隧道顺利贯通，为天平铁路年内全线开通奠定了坚实基础。

　　天平铁路关山特长隧道是全线控制性工程，全长15.634公里，2009年4月开工，历时76个月。

贯通胜利图

　　关山隧道历经北秦岭褶皱带、六盘山褶皱带、鄂尔多斯地台三个大地构造单元，多种构造交叉穿织，复合叠置，褶曲、断裂较为发育。另外，受多种区域构造复合穿插作用的影响，沿线途经地区断层较发育，岩浆侵入面积亦广，沿途经过地区内特殊岩土主要为湿陷性黄土、膨胀岩土和软弱地基三大类。地质结构复杂，施工难度大。滑坡、错落、泥石流、崩塌、顺层、有害气体、放射性等不良地质现象时常发生，特别是2012年遭遇高地应力这一世界罕见的施工难题，使关山隧道施工困难重重。经二年多的努力，攻克世界性难题，成果己被收录到《高速铁路建设典型工程案例-隧道工程》一书中。

　　据悉，甘肃平凉和天水自古就是“丝绸之路”必经重镇，素有陇上“旱码头”之称，天平铁路向北延伸可与太中银和西平铁路连接，向南延伸可与兰渝铁路相通，在我国铁路网中起着重要的联络作用，同时，为陇东地区煤炭资源的开发和利用打开新的战略通道，对于实施国家西部大开发、促进甘肃从资源优势向经济优势转化、拉动区域经济发展具有十分重要的意义。

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Guanshan Extra-Long Tunnel on Tianshui-Pingliang Railway Built by China Railway Construction Corporation Completed

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Guanshan Extra-Long Tunnel on Tianshui-Pingliang Railway Built by China Railway Construction Corporation Completed

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