| 风积砂围岩浅埋暗挖隧道施工技术 |
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| 引用本文： | 史宝童,肖均.风积砂围岩浅埋暗挖隧道施工技术[J].施工技术,2011,40(7). |
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| 作者姓名： | 史宝童 肖均 |
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| 作者单位： | 1. 中交第一公路勘察设计研究院有限公司,陕西,西安,710075
2. 陕西榆林榆神高速公路有限公司,陕西,榆林,719000 |
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| 摘 要： | 针对风积砂地层颗粒单一、级配不良、黏聚力低、稳定性差的特点,结合榆神高速神木一号隧道工程,通过对不同施工方案的比较分析,介绍了水平旋喷桩和三台阶临时仰拱法在大跨度风积砂隧道施工中的应用.经施工开挖检验,水平旋喷桩完整性好,咬合度高,单轴抗压强度达11MPa;三台阶临时仰拱法分部开挖面积小,利于及时支护,施工体系转换灵活,可有效控制围岩变形.
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| 关 键 词： | 风积砂地层 浅埋暗挖 三台阶临时仰拱法 超前支护 水平旋喷桩 |
Construction Technology of Shallow Underground Excavation Tunnel in Aeolian Sand Surrounding Rock |
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| Shi Baotong,Xiao Jun.Construction Technology of Shallow Underground Excavation Tunnel in Aeolian Sand Surrounding Rock[J].Construction Technology,2011,40(7). |
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| Authors: | Shi Baotong Xiao Jun |
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| Abstract: | Aiming at the single particles,bad gradation,poor cohesion and stability of aeolian sand stratum,based on Shenmu No.1 tunneling engineering project,the application of horizontal rotary jet grouting piles and three benches method in aeolian sand tunnel with large span has been introduced by comparing different construction schemes.The excavation construction has proved that horizontal rotary jet grouting piles is in good condition of integrity and galled extent.Meanwhile,the uniaxial compression strength rea... |
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| Keywords: | aeolian sand stratum shallow underground excavation three benches temporary invert method advanced support horizontal rotary jet grouting pile |
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