| 卸荷速率对岩石强度影响的试验研究 |
| |
| 引用本文： | 安泰龙,茅献彪,孙凤娟. 卸荷速率对岩石强度影响的试验研究[J]. 力学与实践, 2009, 31(6): 21-24. DOI: 10.6052/1000-0879-2008-407 |
| |
| 作者姓名： | 安泰龙 茅献彪 孙凤娟 |
| |
| 作者单位： | 1. 中国矿业大学理学院力学系;2. 中国矿业大学;3. ; |
| |
| 基金项目： | 国家重点基础研究发展规划(973计划)，高等学校学科创新引智计划，国家自然科学基金重点项目 |
| |
| 摘 要： | 通过MTS 815.02型电液伺服岩石力学试验系统，研究砂岩试样在常规三轴条件下卸围压过程中的应力-应变关系，探讨不同卸荷速率对试样强度的影响情况，分析得出卸荷速率与试样强度的变化规律；观察、测量破坏试样的破裂特征及角度，初步探究试样在卸荷作用下的破坏机理；研究成果可为工程实践的岩体卸荷问题提供一定的理论参考.
|
| 关 键 词： | 砂岩 围压 卸荷速率 破坏机理 |
| 收稿时间： | 2008-09-16 |
THE EFFECTS OF DIFFERENT UNLOADING RATES ON ROCK STRENGTH |
| |
| AN Tailong , MAO Xianbiao , SUN Fengjuan. THE EFFECTS OF DIFFERENT UNLOADING RATES ON ROCK STRENGTH[J]. Mechanics and Engineering, 2009, 31(6): 21-24. DOI: 10.6052/1000-0879-2008-407 |
| |
| Authors: | AN Tailong MAO Xianbiao SUN Fengjuan |
| |
| Abstract: | By using MTS series 815.02 model servo-controlled stiffrock mechanics testing system, the stress-strain characteristicsof the sandstone specimen were studied in unloading process under tri-axialcondition with different unloading rates. The relation between strength and unloadingrate was analyzed and a formula was obtained.The fracture mechanism in unloading process was studied by observing thecrack characteristics. The findings can provide sometheoretical reference for engineering practice when analyzing the rock massunloading problems. |
| |
| Keywords: | sandstone confining pressure unloading rates fracture mechanism |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《力学与实践》浏览原始摘要信息 |
|
点击此处可从《力学与实践》下载全文 |
