| 某水工隧洞开挖与支护的数值模拟 |
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| 引用本文： | 刘佳,徐连民. 某水工隧洞开挖与支护的数值模拟[J]. 土工基础, 2009, 23(1) |
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| 作者姓名： | 刘佳 徐连民 |
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| 作者单位： | 三峡大学三峡库区地质灾害教育部重点实验室,湖北宜昌,443002 |
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| 摘 要： | 在软弱岩体中进行地下洞室开挖时,通常采用加大衬砌厚度来维持围岩的稳定。但工程实践表明,增加衬砌厚度也会带来一些问题,需要作进一步研究。采用摩尔—库伦弹塑性模型的有限元分析方法,模拟水工隧洞的开挖以及支护过程,研究不同厚度的衬砌及支护对洞室围岩稳定性的影响。计算结果表明,在软弱围岩的地下洞室的开挖过程中,单一增加衬砌的厚度并不是最优的选择。
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| 关 键 词： | 摩尔—库伦弹塑性模型 软弱岩体 数值模拟 隧洞开挖 衬砌厚度 |
Excavation and Support Simulation Analysis of Hydraulic Tunnel |
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| LIU Jia,XU Lian min. Excavation and Support Simulation Analysis of Hydraulic Tunnel[J]. Soie Engineering and Foundation, 2009, 23(1) |
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| Authors: | LIU Jia XU Lian min |
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| Affiliation: | LIU Jia; XU Lian min(Key Lab.of Geological Hazards on Three Gorges Reservoir of Ministry of Education; China Three Gorges University; Yichang 443002; China); |
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| Abstract: | During the excavation of underground chamber in the soft rock,lining thickness are increased to keep the stability of surrounding rock. But many engineering practices show that the increase of lining s thickness brings some problems,which needs a further study. The Mohr-coulomb model is used to simulate the whole process and supports of hydraulic tunnel excavation in the finite element method,in which the stability of surrounding rock are analyzed by studied on the influences of different thicknesses of the... |
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| Keywords: | mohr-coulomb model weak rock numerical simulation excavation of tunnel lining thickness |
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