| 围压和地下水对软岩残余强度及峰后体积变化 影响的试验研究 |
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| 引用本文： | 郭富利,张顶立,苏洁,牛晓凯.围压和地下水对软岩残余强度及峰后体积变化 影响的试验研究[J].岩石力学与工程学报,2009,28(Z1):2644-2644. |
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| 作者姓名： | 郭富利 张顶立 苏洁 牛晓凯 |
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| 作者单位： | 1. 北京交通大学,隧道及地下工程教育部工程研究中心,北京,100044
2. 北京市市政工程研究院,北京,100037 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 就宜万铁路堡镇隧道高地应力大变形段中所揭示的黑色炭质页岩设计不同饱水时间下的三轴试验方案，进行三轴力学性质测试，获得围压和饱水时间对软岩残余强度和峰后体积变化的影响规律，探讨二者对软岩残余强度和体积变化的作用机制及特点，对隧道二次衬砌作用时机进行分析。
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| 关 键 词： | 关键词岩石力学峰后力学性质峰后体积变化饱水软岩力学性质软化三轴试验 |
| 收稿时间： | 2008-6-20 |
| 修稿时间： | 2008-9-22 |
EXPERIMENTAL STUDY OF INFLUENCES OF CONFINING PRESSURES AND GROUND WATER ON RESIDUAL STRENGTH AND POST-PEAK VOLUMETRIC CHANGE OF SOFT ROCK |
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| GUO Fuli,ZHANG Dingli,SU Jie,NIU Xiaokai.EXPERIMENTAL STUDY OF INFLUENCES OF CONFINING PRESSURES AND GROUND WATER ON RESIDUAL STRENGTH AND POST-PEAK VOLUMETRIC CHANGE OF SOFT ROCK[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(Z1):2644-2644. |
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| Authors: | GUO Fuli ZHANG Dingli SU Jie NIU Xiaokai |
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| Abstract: | The post-peak mechanical behaviors of black macker widely distributed in Baozhen tunnel are discussed by a series of triaxial compressive tests under different saturated times，and research on changing laws of rock residual strengths and post-peak volumetric strain under different confining pressures and saturated times is carried out. In addition，the mechanism and features of confining pressure，saturation time acting on remnant strength are researched. Finally，the timing of carrying out secondary lining is analyzed. |
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| Keywords: | Key words：rock mechanics post-peak mechanical properties post-peak volumetric change saturated soft rocks softening of mechanical properties triaxial compression test |
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