| 孔隙压力作用下圆形巷道围岩的蠕变分析 |
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| 引用本文： | 梁冰,李平. 孔隙压力作用下圆形巷道围岩的蠕变分析[J]. 力学与实践, 2006, 28(5): 69-72,27 |
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| 作者姓名： | 梁冰 李平 |
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| 作者单位： | 辽宁工程技术大学力学与工程科学系,阜新,123000;辽宁工程技术大学力学与工程科学系,阜新,123000 |
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| 摘 要： | 在原有的岩土流变理论基础上,与渗流力学原理相结合,考虑孔隙压力及孔隙度在岩石蠕变过程中对于岩体变形的影响,在弹性解答的基础上,通过Laplace变换(对应性原理)得出解析解．在一定的假设条件下,利用弹性力学基本方程、蠕变方程及有效应力原理(Terzaghi有效应力方程),采用H-K体模型作为本构方程,将孔隙压力引入到围岩蠕变方程中．给出在孔隙压力作用下的蠕变曲线,并与不考虑孔隙压力和定孔隙压力条件下蠕变曲线相比,其更接近于实际．
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| 关 键 词： | 孔隙压力 有效应力原理 Laplace变换 蠕变 |
| 收稿时间： | 2005-09-05 |
| 修稿时间： | 2005-09-052006-06-26 |
CREEP ANALYSIS OF ROCK SURROUNDING ROUND TUNNEL BY CONSIDERING PORE PRESSURE |
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| LIANG Bing,LI Ping. CREEP ANALYSIS OF ROCK SURROUNDING ROUND TUNNEL BY CONSIDERING PORE PRESSURE[J]. Mechanics and Engineering, 2006, 28(5): 69-72,27 |
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| Authors: | LIANG Bing LI Ping |
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| Affiliation: | Liaoning Technical University, Department of Mechanics and Engineering Science, Fuxin 123000, China |
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| Abstract: | In this paper,based on the reological theory of rock,and the principle of seepage,considering the effect of the pore pressure and porosity on deformation of rock,analytical solutions are obtained by using the the Laplace transform (corresponding principle).In certain conditions,the creep curve under pore pressure is obtained by using the principle of effective stress (the equation of effective stress of Terzaghi) and H-K model as the constitutive equation.Comparing this curve with that without pore pressure,we can see that our results agree better with the actual situation. |
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| Keywords: | pore pressure principle of effective stress Laplace transform creep |
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