Comparison of the characteristics of rock salt exposed to loading and unloading of confining pressures
文献类型：期刊论文
| 作者 | Ren, Song1; Chen, Jie1,2; Jiang, Deyi1; Yang, Chunhe1,2 |
| 刊名 | ACTA GEOTECHNICA
 |
| 出版日期 | 2016 |
| 卷号 | 11期号:1页码:221-230 |
| 关键词 | Dilatancy Loading path Rock salt Triaxial Uniaxial Unloading |
| ISSN号 | 1861-1125 |
| DOI | 10.1007/s11440-015-0369-9 |
| 英文摘要 | Rock mechanical behaviors and deformation characteristics are associated with stress history and loading path. Unloading conditions occur during the formation of a salt cavity as a result of washing techniques. Such conditions require an improved understanding of the mechanical and deformation behaviors of rock salt. In our study, rock salt dilatancy behaviors under triaxial unloading confining pressure tests were analyzed and compared with those from conventional uniaxial and triaxial compression tests. The volume deformation of rock salt under unloading was more than under triaxial loading, but less than under uniaxial loading (with the same deviatoric stress). Generally, under the same axial compression, the corresponding dilatancy rate decreased as the confining compression increased, and under the same confining compression, the corresponding dilatancy rate increased as the axial compression increased. The dilatancy boundary of the unloading confining pressure test began with unloading. This is different from the dilatancy of the uniaxial and triaxial compression tests. The accelerated dilatancy point boundary stress value was affected by confining and axial compressions. The specimens entered into a creep state after unloading. The associated creep rate depends on the deviatoric stress and confining compression values at the end of the unloading process. Based on unloading theory and the experimental data, we propose a constitutive model of rock salt damage. Our model reflects the dilatancy progression at constant axial stress and reduced lateral confinement. |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000368684700015 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3816]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Controls ; 2.Chinese Acad Sci, Inst Rock & Soil Mech |
| 推荐引用方式 GB/T 7714 | Ren, Song,Chen, Jie,Jiang, Deyi,et al. Comparison of the characteristics of rock salt exposed to loading and unloading of confining pressures[J]. ACTA GEOTECHNICA,2016,11(1):221-230. |
| APA | Ren, Song,Chen, Jie,Jiang, Deyi,&Yang, Chunhe.(2016).Comparison of the characteristics of rock salt exposed to loading and unloading of confining pressures.ACTA GEOTECHNICA,11(1),221-230. |
| MLA | Ren, Song,et al."Comparison of the characteristics of rock salt exposed to loading and unloading of confining pressures".ACTA GEOTECHNICA 11.1(2016):221-230. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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