| 坡度因素对雪峰山隧道开挖面最小支护力的影响研究 |
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| 引用本文： | 黄戡,刘宝琛,彭建国,赵丹,丁国华,胡惠华.坡度因素对雪峰山隧道开挖面最小支护力的影响研究[J].中南公路工程,2010(1):9-12,27. |
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| 作者姓名： | 黄戡 刘宝琛 彭建国 赵丹 丁国华 胡惠华 |
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| 作者单位： | 中南大学土木建筑学院;湖南省交通规划勘察设计院; |
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| 基金项目： | 交通部西部交通建设科技项目(2003-318-798-02) |
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| 摘 要： | 在引用Horn筒仓模型的基础上，首先引进隧道开挖面处的坡度角对模型进行改进；然后根据、极限平衡条件对模型在开挖面处进行空间受力分析；最后推导出不同坡度下开挖面所需最小支护力的表达式。并以雪峰山隧道为例进行设计计算，计算结果表明：在坡度值变化范围不大的条件下，隧道坡度与隧道开挖面所需的最小支护力近似成线性关系。最后与简化计算公式对比分析，验证了推导表达式的实用性和准确性。
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| 关 键 词： | 坡度因素 筒仓模型 极限平衡 特长隧道 支护力 |
Study on the Gradient Affect to Minimal Supporting Force of Excavation Face in XUE FENG SHANG Tunnel |
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| HUANG Kan,LIU Baochen,PENG Jianguo,ZHAO Dan,DING Guohua,HU Huihua.Study on the Gradient Affect to Minimal Supporting Force of Excavation Face in XUE FENG SHANG Tunnel[J].Central South Highway Engineering,2010(1):9-12,27. |
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| Authors: | HUANG Kan LIU Baochen PENG Jianguo ZHAO Dan DING Guohua HU Huihua |
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| Institution: | HUANG Kan1,2,LIU Baochen1,PENG Jianguo2,ZHAO Dan1,DING Guohua2,HU Huihua2(1.School of Civil Engineering , Architecture,Center South University,Changsha,Hunan 410075,China,2.Transportation Planning Survey , Design Institute in Hunan Province,Hunan 410008,China) |
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| Abstract: | At first,It is inducted the gradiente of excavation surfac to improve the model based on Horn silo model in this paper;And then,It is mechanical analysised on the model of space in the excavation surface according to limit equilibrium conditions;At last,It is derived expression of minimum supporting strength with the excavation surface of different gradiente.It is designed and calculated with XUE FENG SHANG tunnel;The calculation results show that: In the condition with gradiente changes limited,It is a lin... |
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| Keywords: | gradient silo model limit balance tex-long tunnel supporting force |
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