岩土力学2011，Vol.32Issue(10)：2917-2921,2928,6.
单轴压缩下含倾斜单裂纹砂岩试件裂纹扩展量测研究
A study of crack propagation measurement on sandstone with a single inclined flaw under uniaxial compression
谢其泰 1郭俊志 2王建力 2陈于高1
作者信息
- 1. 台湾大学地质科学系,台湾台北10617
- 2. 成功大学资源工程学系,台湾台南70101
- 折叠
摘要
Abstract
Uniaxial compression test was conducted on sandstone with a single pre-existing flaw at various inclined angles. Employing crack propagation measuring techniques and relevant fracture criteria, some conclusions are drawn as follows. (1) The crack initiation angles of the sandstone specimen obtained from both theory and experiments increased with increasing flaw inclined angle. (2) Using a fracture criterion, the appearance of a anti-wing cracks at the tip of the crack of the sandstone specimen was attributed to shear failure. (3) Under uniaxial compression, crack propagation in the sandstone specimen is influenced by the single flaw inclined angle; a small flaw inclined angle it is not easy to crack initiation, while the large flaw inclined angle, allowed easy crack initiation (4) Under uniaxial compression, crack propagation in the sandstone specimen, which was influenced by a single pre-existing flaw, was unstable when the flaw inclined angle was small; and stable when the angle was large. (5) For the sandstone specimen, the average crack propagation velocity for A and B sides of the crack tip decreases with increasing flaw inclined angle.关键词
裂纹倾斜角/反翼裂纹/裂纹扩展速度Key words
flaw inclined angle/ anti-wing crack/ crack velocity分类
建筑与水利引用本文复制引用
谢其泰,郭俊志,王建力,陈于高..单轴压缩下含倾斜单裂纹砂岩试件裂纹扩展量测研究[J].岩土力学,2011,32(10):2917-2921,2928,6.
