Experimental Investigation of Dilatancy-bulking Behavior of Weak Sandstone
文献类型：会议论文
| 作者 | Lu, Xingli; Liu, Quangsheng |
| 出版日期 | 2011 |
| 会议日期 | APR 09-11, 2011 |
| 会议地点 | Guilin, PEOPLES R CHINA |
| 关键词 | Dilatancy-bulking Loading and Unloading Tests Weak Sandstone |
| 卷号 | 197-198 |
| DOI | 10.4028/www.scientific.net/AMR.197-198.1420 |
| 页码 | 1420-1424 |
| 英文摘要 | The process of stress-induced fracturing around underground excavations is associated with dilatancy-bulking behavior of the fractured rock. Due to the importance in earth science and engineering design, this paper presents an experimental investigation of rock dilatancy-bulking behavior based on triaxial loading and unloading tests carried out on weak sandstone samples from the Gubei colliery. Through experimental and theoretical analyses, it is found that the volume increase of stress-fractured rock can be divided into two groups: (1) pre-peak dilatancy due to crack opening and propagation, (2) post-peak bulking by the sliding, rotate or detachment of rock blocks. And the post-peak bulking deformation is the main cause of the rock volume expansion. Moreover, the evolution of characteristic stresses and dilation angle show strong pressure dependence, which means that confining pressure strongly inhibits dilatancy-bulking behavior. It also indicates that the rock response under loading and unloading conditions is substantially different. |
| 源文献作者 | Zhou, HY ; Gu, TL ; Yang, DG ; Jiang, ZY ; Zeng, JM |
| 会议录 | NEW AND ADVANCED MATERIALS, PTS 1 AND 2
 |
| 会议录出版者 | TRANS TECH PUBLICATIONS LTD |
| 会议录出版地 | STAFA-ZURICH |
| 语种 | 英语 |
| WOS研究方向 | Engineering ; Materials Science |
| WOS记录号 | WOS:000291849700287 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4606]  |
| 专题 | 岩土力学所知识全产出_会议论文 国家重点实验室知识产出_会议论文 |
| 作者单位 | Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Lu, Xingli,Liu, Quangsheng. Experimental Investigation of Dilatancy-bulking Behavior of Weak Sandstone[C]. 见:. Guilin, PEOPLES R CHINA. APR 09-11, 2011. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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