A constitutive model considering friction property of geomaterials and stability analysis of borehole
文献类型：会议论文
| 作者 | Zheng, Ying-ren1,2; Gao, Hong1; Feng, Xia-ting1 ; Jiang, Quan1; Zhang, Yong-hui1
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| 出版日期 | 2016 |
| 会议日期 | SEP 06-08, 2015 |
| 会议地点 | Wuhan, PEOPLES R CHINA |
| 关键词 | Friction property Mechanical element of friction material Nonlinear constitutive model Friction strength enhancement |
| 卷号 | 36 |
| DOI | 10.1016/j.jngse.2016.02.035 |
| 页码 | 1276-1283 |
| 英文摘要 | The strength and deformation properties of geomaterials are essential to estimating the cracking behavior of rock, especially for deep exploration of conventional and unconventional hydrocarbon resources. Because the geomaterials encountered in hydrocarbon exploration are generally granular friction materials formed from deposition or cementation of granular materials in natural conditions, they sustain loads by means of intergranular friction, which forms the main source of their shear strength. Therefore, the deformation and failure of friction material is governed by the friction law. A mechanical element of the friction material is modelled based on the concept that the internal friction exists in both the elastic state and the plastic state. By assuming that the friction coefficient is proportional to the strain, the friction stress is computed, and then the corresponding nonlinear elasto-plastic constitutive model of the friction material is established. Based on analysis of the internal friction effect of rock during macroscopic shear deformation, the mechanical mechanism of geomaterials' friction strength enhancement is explained. The nonlinear elasto-plastic constitutive model was used to compute the fracture and failure of a tunnel and a deep borehole. The results show that the model is effective for estimating the mechanical response of important geotechnical problems, such as the analysis of cracked rodc-mass strength, forecasting crack closure, and borehole wall collapse. (C) 2016 Elsevier B.V. All rights reserved. |
| 源文献作者 | Int Soc Rock Mech, Chinese Acad Sci, Inst Rock Soil Mech, Natl State Key Lab Geomechan & Geotechnical Engn |
| 会议录 | JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
 |
| 会议录出版者 | ELSEVIER SCI LTD |
| 会议录出版地 | OXFORD |
| 语种 | 英语 |
| WOS研究方向 | Energy & Fuels ; Engineering |
| WOS记录号 | WOS:000390830300016 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4913]  |
| 专题 | 岩土力学所知识全产出_会议论文 岩土力学所知识全产出 国家重点实验室知识产出_会议论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Logist Engn Univ PLA, Dept Civil Engn |
| 推荐引用方式 GB/T 7714 | Zheng, Ying-ren,Gao, Hong,Feng, Xia-ting,et al. A constitutive model considering friction property of geomaterials and stability analysis of borehole[C]. 见:. Wuhan, PEOPLES R CHINA. SEP 06-08, 2015. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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