| 引水工程秦巴段隧洞地应力模拟及工程地质问题 |
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| 引用本文： | 李东林,吴树仁,韩金良,刘景儒.引水工程秦巴段隧洞地应力模拟及工程地质问题[J].地质与勘探,2008,44(5):81-86. |
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| 作者姓名： | 李东林 吴树仁 韩金良 刘景儒 |
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| 作者单位： | 1. 重庆工程职业技术学院,重庆,400037
2. 中国地质科学院地质力学研究所,北京,100081 |
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| 基金项目： | 国家自然科学基金项目(编号:40472153);;中国地质调查局项目(编号:1212010541402);;科技部公益基础(编号:2004DIB3J080)共同资助 |
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| 摘 要： | 利用Ansys有限元软件对三峡引水工程秦巴段线路不同深度、不同截面形态隧洞围岩的应力重分布情况进行模拟计算,得到圆形隧洞、城门形隧洞和马蹄形隧洞围岩的应力数值和等值线图.利用库仑一纳维尔强度准则,对花岗岩区及灰岩区隧洞围岩的剪切破坏进行分析;利用三种岩爆应力判别指标,对岩爆进行初步预测;进而对不同深度、不同截面形态的隧洞围岩的稳定性进行分析;最后对引水工程隧洞设计中截面形态的选择给出了初步建议.
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| 关 键 词： | 三峡引水工程 应力重分 布剪切破坏 岩爆 |
CRUSTAL STRESS MODELLING AND ENGINEERING GEOLOGY PROBLEMS OF QINLING-DABASHAN TUNNEL FOR DIVERSION PROJECT |
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| LI Dong-lin,WU Shu-ren,HAN Jin-liang,LIU Jing-ru.CRUSTAL STRESS MODELLING AND ENGINEERING GEOLOGY PROBLEMS OF QINLING-DABASHAN TUNNEL FOR DIVERSION PROJECT[J].Geology and Prospecting,2008,44(5):81-86. |
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| Authors: | LI Dong-lin WU Shu-ren HAN Jin-liang LIU Jing-ru |
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| Institution: | 1.Chongqing Vocational Institute of Engineering;Chongqing 400037;2.Institute of Geomechanics;Chinese Academy of Geological Sciences;Beijing 100081 |
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| Abstract: | The tunnel length of the Qinling-Dabashan segment of the Three Gorges water diversion project accounts for 80% of the total length of the project line.In order to analyze possible problems of engineering geology in tunnel construction and operations,simulation calculation were performed for crustal stress redistribution of wallrocks in the tunnel with the circle-,straight-wall-top-arch-and horseshoe-shaped cross sections at different depths by using the Ansys finite element software.According to Coloumn-Nav... |
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| Keywords: | Three Gorges water diversion project stress redistribution failure by shear rock burst |
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