Effects of porosity on seismic velocities, elastic moduli and Poisson's ratios of solid materials and rocks
文献类型：期刊论文
| 作者 | Yu, Chengbo2; Ji, Shaocheng2; Li, Qi1
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| 刊名 | Journal of Rock Mechanics and Geotechnical Engineering
 |
| 出版日期 | 2016 |
| 卷号 | 8期号:1页码:35 |
| 关键词 | Porous rocks Seismic velocities Elastic moduli Poisson's ratio Porosity Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 |
| ISSN号 | 1674-7755 |
| 英文摘要 | The generalized mixture rule (GMR) is used to provide a unified framework for describing Young's (E), shear (G) and bulk (K) moduli, Lame parameter (λ), and P- and S-wave velocities (Vp and Vs) as a function of porosity in various isotropic materials such as metals, ceramics and rocks. The characteristic J values of the GMR for E, G, K and λ of each material are systematically different and display consistent correlations with the Poisson's ratio of the nonporous material (ν0). For the materials dominated by corner-shaped pores, the fixed point at which the effective Poisson's ratio (ν) remains constant is at ν0=0.2, and J(G)>J(E)>J(K)>J(λ) and J(G) 0.2 and ν0 J(Vp) and J(Vs) 0.2 and ν0 0.2 and ν0=0.2, respectively. For natural rocks containing thin-disk-shaped pores parallel to mineral cleavages, grain boundaries and foliation, however, the ν fixed point decreases nonlinearly with decreasing pore aspect ratio (α: width/length). With increasing depth or pressure, cracks with smaller α values are progressively closed, making the ν fixed point rise and finally reach to the point at ν0=0.2. |
| 资助项目 | [Natural Sciences and Engineering Council of Canada] |
| 语种 | 英语 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/26350]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.中国科学院 2.Ecole Polytech Montreal, Department Genie Civil Geol & Mines, Montreal, PQ H3C 3A7, Canada |
| 推荐引用方式 GB/T 7714 | Yu, Chengbo,Ji, Shaocheng,Li, Qi. Effects of porosity on seismic velocities, elastic moduli and Poisson's ratios of solid materials and rocks[J]. Journal of Rock Mechanics and Geotechnical Engineering,2016,8(1):35. |
| APA | Yu, Chengbo,Ji, Shaocheng,&Li, Qi.(2016).Effects of porosity on seismic velocities, elastic moduli and Poisson's ratios of solid materials and rocks.Journal of Rock Mechanics and Geotechnical Engineering,8(1),35. |
| MLA | Yu, Chengbo,et al."Effects of porosity on seismic velocities, elastic moduli and Poisson's ratios of solid materials and rocks".Journal of Rock Mechanics and Geotechnical Engineering 8.1(2016):35. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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