| 新奥法隧道开挖围岩级别快速判定方法 |
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| 引用本文： | 郭立军,宋永能. 新奥法隧道开挖围岩级别快速判定方法[J]. 现代交通技术, 2008, 5(5): 59-62 |
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| 作者姓名： | 郭立军 宋永能 |
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| 作者单位： | 1. 中铁四局集团第一工程有限公司,安徽,合肥,230041
2. 安徽省地震局分析预报中心,安徽,合肥,230001 |
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| 摘 要： | 隧道开挖对岩层的级别判定，历来都存在不确定性和多解性，文章通过在高速公路隧道施工断面上划分9个分区，对每个分区确定级别加权系数，9个分区的系数之和为1，再与图纸设计的围岩级别相加，取代数和，得出初期支护所需的级别，避免了盲目估算围岩级别而产生偏差的现象。
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| 关 键 词： | 隧道工程 围岩 支护参数 加权系数 地质构造 |
Fast Grade Determination for Surrounding Rock Excavated with New Austrian Tunnelling Method |
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| Guo Lijun,Song Yongneng. Fast Grade Determination for Surrounding Rock Excavated with New Austrian Tunnelling Method[J]. Modern Transportation Technology, 2008, 5(5): 59-62 |
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| Authors: | Guo Lijun Song Yongneng |
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| Affiliation: | 1.The First Engineering Co.;Ltd of CTCE Group;Hefei 230041;China;2.Anhui Earthquake Analysis and Forecast Center;Hefei 230001;China |
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| Abstract: | The judgment of surrounding rock grade is indeterminacy and multi-separation for a long time during the process of tunnel excavating.In this paper,construction section of expressway tunnel is devided into 9 branch zones and each branch zone has a grade weighting coefficient and the sum of these 9 branch coefficients is 1.Then adding the surrounding rock grade of the designing drawing with the coefficients,the grade of initial supporting demand is got .In this way,the deviation of surrounding rock grade esti... |
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| Keywords: | tunnel engineering surrounding rock supporting parameter weighting coefficient geological structure |
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