Experiment Research about Mechanical Characteristic of Gneissic Granite
详细信息
- 责任者：Fan Yongbo (Key Laboratory of Environmental Mechanics ; Institute of Mechanics ; Chinese Academy of Sciences ; Beijing 100150 ; China) ; Wu Faquan
- 刊名：Hydrogeology and Engineering Geology
- 出版年：2011
- 卷期：38(3)
- 关键词：花岗质片麻岩 ; granitic gneiss ; 岩体力学 ; rock mechanics ; 卸荷 ; unloading
- 页码：p.54-58
- 图表：8 illus., 1 refs.
- 分类号：1702
- issnNo：ISSN1000-3665
- isbnNo：CN11-2202/P
摘要
Unloading confining pressure tests are conducted before different pre-peak confining pressure of gneissic granite obtained at the foundation of Xiaowan Hydrodynamic Station, the results show that the deformation modulus changes little, but poisson’s ratio increases greatly compared with the loading conditions under the same confining pressure. Samples with different sizes will show different behaviors under the same unloading confining pressure, and the sample with a larger size will show tensile failure. The peak-stress of the sample will increase linearly with the confining pressure increasing,and size effect is obvious.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |