| 岩溶地区双跨连拱公路隧道施工技术 |
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| 引用本文： | 冯军武.岩溶地区双跨连拱公路隧道施工技术[J].国防交通工程与技术,2009,7(2):42-46. |
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| 作者姓名： | 冯军武 |
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| 作者单位： | 中铁二十局集团有限公司三公司,重庆,401121 |
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| 摘 要： | 岩溶地区双连拱公路隧道的施工是山区不良地质条件下隧道修建面临的技术难题之一，其主要特点包括地质条件差，存在较多孔洞、节理裂隙、岩溶地下水，隧道结构受力复杂、施工难度大等。结合沪蓉西高速公路白果坝1#隧道，分析了岩溶地区双连拱隧道的特点，进行了施工方案比选和优化，提出了三导洞紧跟开挖方法及确保隧道安全施工的关键技术措施，解决了岩溶地区的双连拱公路隧道防排水关键技术问题等。
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| 关 键 词： | 岩溶 双连拱 公路隧道 不良地质 三导洞先墙后拱法 防排水 |
Construction Techniques for Duplex-arched Highway Tunnels in Karst Areas |
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| Feng Junwu.Construction Techniques for Duplex-arched Highway Tunnels in Karst Areas[J].Traffic Engineering and Technology for National Defence,2009,7(2):42-46. |
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| Authors: | Feng Junwu |
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| Institution: | Third Co.Ltd.of the 20th Bureau Group of the Railway Building Corporation of China;Chongqing 401121;China |
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| Abstract: | The construction of duplex-arched highway tunnels in karst areas is one of the technical difficulties facing the tunnel-building units in geologically poor mountainous areas,and the main characteristics include poor geological conditions,more cavities,cracks,and karst warter,the tunnel being under complex stresses,and the great construction difficulty,etc.With the No.1 Baiguoba Tunnel of the Hurongxi Expressway as a practical example,an analysis of the characteristics of the duplex-arched tunnel is made,the... |
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| Keywords: | karst duplex-arched highway tunnel poor geological conditions the tri-leading-hole-and-first-wall-and-then-arch method prevention and draining of underground water |
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