| 高速铁路大断面黄土隧道二次衬砌施作时机研究 |
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| 引用本文： | 路军富,王明年,贾媛媛,喻渝,谭忠盛. 高速铁路大断面黄土隧道二次衬砌施作时机研究[J]. 岩土力学, 2011, 32(3): 843-848 |
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| 作者姓名： | 路军富 王明年 贾媛媛 喻渝 谭忠盛 |
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| 作者单位： | 1. 成都理工大学 地质灾害防治与地质环境保护国家重点实验室，成都 610059；2. 西南交通大学 土木工程学院，成都 610031；3. 西华大学 建筑与土木工程学院，成都 610039；4. 中铁二院工程集团有限责任公司，成都 610031；5. 北京交通大学 土木建筑工程学院，北京 100044 |
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| 基金项目： | 铁道部科技研究开发计划项目 |
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| 摘 要： | 隧道工程二次衬砌施作时机是隧道界普遍关注的问题。依托正在修建的郑州-西安铁路客运专线大断面黄土隧道工程，以围岩及初期支护基本稳定速率作为二次衬砌施作时机判定指标，采用位移断面监测数据回归分析和数值分析相结合，建立基本稳定速率的理论求解方法，从而确定二次衬砌施作时机；同时，选取贺家庄隧道试验段作为工程实例，对高速铁路大断面黄土隧道二次衬砌施作时机进行研究。研究结果表明：当拱顶下沉变形速率值小于0.55 mm/d，边墙水平绝对收敛速率值小于0.11 mm/d时，即可进行二次衬砌施作。此次研究为类似工程的设计和施工提供了参考依据。
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| 关 键 词： | 隧道工程 大断面黄土隧道 二次衬砌 施作时机 基本稳定速率 |
| 收稿时间： | 2009-09-15 |
Research on construction time of secondary lining of large section loess tunnel for high-speed railway |
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| LU Jun-fu,WANG Ming-nian,JIA Yuan-yuan,YU Yu,TAN Zhong-sheng. Research on construction time of secondary lining of large section loess tunnel for high-speed railway[J]. Rock and Soil Mechanics, 2011, 32(3): 843-848 |
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| Authors: | LU Jun-fu WANG Ming-nian JIA Yuan-yuan YU Yu TAN Zhong-sheng |
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| Affiliation: | 1. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China; 2. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China；3. School of Architecture and Civil Engineering, Xihua University, Chengdu 610039, China；4. China Railway Eryuan Engineering Group Co., Ltd.,Chengdu 610031, China; 5. School of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing, 100044, China |
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| Abstract: | The construction time of secondary lining of tunnel is a very controversial issue in tunneling engineering. Associating with the large-section loess tunnel construction of Zhengzhou-Xi′an high-speed passenger railway, the determinant indexes about the construction time of secondary lining are put forward, which are basic stability deformation rate and basic stability time and distance. The solving method for basic stability deformation rate was carried out with regression analysis and numerical analysis. In this case, we take the Hejiazhuang tunnel as our experimental section, the construction time of secondary lining of large section loess tunnel is studied. The study results indicate: the value of vertical deformation rate of tunnel crown less than 0.55mm/d and the value of horizontal absolute convergence rate of tunnel sidewall less than 0.17mm/d; we can construct the secondary lining. In conclusion, these results are instructive for the design and construction on similar tunneling engineering. |
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| Keywords: | tunnel engineering large section loess tunnel secondary lining construction time stability deformation rate |
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