| 井孔岩体稳定分析的双孔隙弹塑性数值解 |
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| 引用本文： | 沈新普,张金才,奚耀佑.井孔岩体稳定分析的双孔隙弹塑性数值解[J].太原理工大学学报,2005,36(6):627-629. |
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| 作者姓名： | 沈新普 张金才 奚耀佑 |
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| 作者单位： | 1. 沈阳工业大学,建筑工程学院,辽宁,沈阳,110023;三峡大学,防灾减灾实验室,湖北,宜昌,443002
2. 沈阳工业大学,建筑工程学院,辽宁,沈阳,110023 |
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| 基金项目： | 国家自然科学基金资助项目(10472072)，辽宁省教育厅重大基础研究计划资助项目(2004C035) |
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| 摘 要： | 研究了倾斜油井井眼周围含天然裂纹的孔隙岩体的机械力学行为及其与流体流动耦合的力学问题。模型中将含天然裂纹的孔隙岩体看作双孔隙介质,即孔隙岩体和其中包含的裂隙系统。孔隙岩体和裂隙系统二者具有不同的孔隙率和不同的渗透特性。模型将孔隙岩体、裂隙系统、以及流体的流动三者耦合起来考虑,在分析中考虑了岩体和裂隙系统二者不同的孔隙率和不同的渗透率。并给出了任意倾角的孔隙裂隙岩体中井孔围岩的变形与岩体内部流体的流动的数值解。
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| 关 键 词： | 弹塑性 双孔隙 井孔 稳定性 |
| 文章编号： | 1007-9432（2005）06-0627-03 |
| 收稿时间： | 2005-08-28 |
| 修稿时间： | 2005年8月28日 |
Elastoplastic Dual-Porosity Analysis for Instability of Borehole in Rockmass |
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| SHEN Xin-pu,ZHANG Jin-cai,XI Yao-you.Elastoplastic Dual-Porosity Analysis for Instability of Borehole in Rockmass[J].Journal of Taiyuan University of Technology,2005,36(6):627-629. |
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| Authors: | SHEN Xin-pu ZHANG Jin-cai XI Yao-you |
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| Institution: | 1. College of Architectural Engineering, Shenyang University of Techenology, Shenyang 110023, China ; 2. Three Gorge University ,Yichang 443002 ,China |
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| Abstract: | The mechanical behaviour of rockmass around an arbitrary inclined borehole and its coupling with multiphase flow were investigated.A dual porosity finite element method was used in this study.In the model adopted here,rockmass which consists natural cracks and pores was taken as dual-porous continum.The porous rock matrix and the crack system have different seepage behaviour.The behaviour of porous rock matrix,property of crack set,together with the multiphase flow,have been coupled into a dual porosity multiphase multi-field finite element formulation.Numerical solutions are presented at the end of the paper. |
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| Keywords: | elastoplasticity dual porosity borehole instability |
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