| 坪石板隧道大跨断面施工技术 |
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| 引用本文： | 尹利生,刘晓翔,崔成刚.坪石板隧道大跨断面施工技术[J].现代隧道技术,2011,48(2):110-115. |
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| 作者姓名： | 尹利生 刘晓翔 崔成刚 |
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| 作者单位： | 1. 中交一航局一公司,天津,300450
2. 兰渝铁路有限责任公司,兰州,730050 |
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| 摘 要： | 坪石板隧道全长154m,为双线变四线大跨单洞隧道,有三种不同断面形式。其中,大跨段具有环境复杂、浅埋偏压、围岩破碎等特点,施工难度较大。文章主要介绍了大跨段的工程特点、施工方法,以及自进式中空锚杆超前大管棚支护、双侧壁导洞法开挖等施工技术。
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| 关 键 词： | 隧道施工 浅埋偏压 大跨 变断面 |
Construction Techniques of Pingshiban Tunnel with Large Profile |
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| Yin Lisheng,Liu Xiaoxiang,Cui Chenggang.Construction Techniques of Pingshiban Tunnel with Large Profile[J].Modern Tunnelling Technology,2011,48(2):110-115. |
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| Authors: | Yin Lisheng Liu Xiaoxiang Cui Chenggang |
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| Institution: | Yin Lisheng1 Liu Xiaoxiang2 Cui Chenggang2(1 No.1 Company,China Communications No.1 Navigation Bureau,Tianjing 300450,2 Lanzhou-Chongqing Railway Co.,Ltd.,Lanzhou 730050) |
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| Abstract: | Pingshiban tunnel is 154m long with large-span single tube changed from double-track to four-track and with three different section types.The large-span section features complex environment,shallow overburden,uneven pressure,fractured surrounding rocks and difficulty for construction.The paper describes the project characteristics and construction techniques involving large pipe-roofing pre-support with self-drilling hollow anchor bolts and double side-heading excavation for the large-span section. |
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| Keywords: | Tunnel construction Shallow overburden and uneven pressure Large span Variable section |
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