| 胡麻岭隧道第三系粉细砂岩段施工关键技术 |
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| 引用本文： | 徐长久.胡麻岭隧道第三系粉细砂岩段施工关键技术[J].国防交通工程与技术,2011(6):55-58. |
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| 作者姓名： | 徐长久 |
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| 作者单位： | 中铁十九局集团有限公司工程经营部; |
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| 摘 要： | 胡麻岭隧道3#、4#斜井和隧道正洞区段穿越第三系弱胶结粉细砂岩,由于地层岩性软,地下水丰富,施工中涌水、流砂、掌子面泥化现象明显,施工难度极大。介绍了施工中所采用的降水、围岩加固、加强支护等措施和方法,有效保证了工期和施工质量。施工经验可供同类工程参考。
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| 关 键 词： | 隧道施工 第三系粉细砂岩 二次支护 水平旋喷桩 帷幕注浆 |
Key Techniques for the Construction of the 3rd System Fine-Powdered Sandy Rock Section of the Humaling Tunnel |
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| Xu Changjiu.Key Techniques for the Construction of the 3rd System Fine-Powdered Sandy Rock Section of the Humaling Tunnel[J].Traffic Engineering and Technology for National Defence,2011(6):55-58. |
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| Authors: | Xu Changjiu |
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| Institution: | Xu Changjiu(The Managing Department of the 19th Bureau Group of the Railway Building Corporation of China,Beijing 100176,China) |
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| Abstract: | The third and fourth oblique shafts and the section of the main body of the Humaling Tunnel go through the third system under-cemented fine-powdered sandy rock stratum,where the rock of the stratum is soft and underground water is rich,owing to which gush of underground water and flowing sand arise here and there,and the slurrying phenomenon of the work face is obvious,which make the construction extremely difficult.Introduced in the paper are technical measures and methods related to draining underground w... |
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| Keywords: | construction of tunnels third-system fine sandy rock secondary support level-swivel-sprayed pile heavy-curtain jetting |
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