| 桃树坪隧道富水未成岩粉细砂预加固施工技术 |
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| 引用本文： | 李世才,石光荣,伍军.桃树坪隧道富水未成岩粉细砂预加固施工技术[J].现代隧道技术,2011,48(2):116-119. |
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| 作者姓名： | 李世才 石光荣 伍军 |
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| 作者单位： | 1. 中铁二十一局集团有限公司兰渝铁路指挥部,兰州,730000
2. 兰渝铁路有限责任公司,兰州,730050 |
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| 摘 要： | 富水未成岩粉细砂隧道开挖后围岩极不稳定,呈流塑状,极易出现溜塌现象、造成初期支护变形侵限,甚至大的坍塌,严重影响到工程的质量、安全、工期及成本。为确保施工进度、安全及质量,必须采取预加固措施。文章结合兰渝铁路LYS-7标段桃树坪隧道出口段的施工实践,介绍了隧道出口富水未成岩粉细砂地层的高压旋喷注浆预加固技术。
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| 关 键 词： | 隧道施工 富水未成岩粉细砂 地层预加固 高压旋喷注浆 水平旋喷桩 |
Construction Techniques of Advance Reinforcement for Immature Fine Sandstone Stratum with Rich Water in Taoshuping Tunnel |
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| Li Shicai,Shi Guangrong,Wu Jun.Construction Techniques of Advance Reinforcement for Immature Fine Sandstone Stratum with Rich Water in Taoshuping Tunnel[J].Modern Tunnelling Technology,2011,48(2):116-119. |
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| Authors: | Li Shicai Shi Guangrong Wu Jun |
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| Institution: | Li Shicai1 Shi Guangrong 2 Wu Jun2(1 Headquarters of Lanzhou-Chongqing Railway,China Railway No.21 Construction Bureau Group Co.Ltd.,Lanzhou 730000,2 Lanzhou-Chongqing Railway Co.,Ltd.,Lanzhou 730050) |
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| Abstract: | It is necessary to take some measures to ensure construction progress,safety and quality for a tunnel passing through fine sanfstone stratum.This paper introduces the advance reinforcement technique by jet grouting for the tunnel exit embedded in immature fine sandstone stratum with rich water based on the practice of Taoshuping tunnel Lot LYS-7 on Lanzhou-Chongqing railway. |
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| Keywords: | Tunnel construction immature fine sandstone stratum with rich water Ground advance reinforcement High-pressure rotary jet grouting Horizontal rotary jet grouting |
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