| 岩石单轴受压体应变与长期强度关系 |
| |
| 引用本文： | 许年春,杨小院,秦娟.岩石单轴受压体应变与长期强度关系[J].辽宁工程技术大学学报(自然科学版),2012,31(3):358-361. |
| |
| 作者姓名： | 许年春 杨小院 秦娟 |
| |
| 作者单位： | 1. 重庆科技学院建筑工程学院,重庆,401331
2. 重庆地震局地震工程研究所,重庆,401147 |
| |
| 基金项目： | 重庆教委科研基金资助项目(KJ091405);重庆市建设委员会基金资助项目(城科字2011第(84)号) |
| |
| 摘 要： | 为了验证可根据岩石单轴受压体应变最大值大致对应出岩石的长期强度这一观点,对4个砂岩试样进行单轴受压试验,采用千分表测出受压过程中的径向变形,计算出径向应变和体应变,得出岩样单轴受压时轴向应力-体应变曲线,结果表明:岩石单轴受压时发生的是剪切破坏,轴向应力-体应变曲线极不规则.得出的结论是无法根据岩石单轴受压体应变的变化特征确定出岩石的长期强度.
|
| 关 键 词： | 岩石 蠕变 单轴受压 体应变 长期强度 剪切破坏 千分表 径向变形 |
Relationship between rock’s bulk strain and long-term strength under uniaxial compression |
| |
| XU Nianchun
,
YANG Xiaoyuan
,
QIN Juan.Relationship between rock’s bulk strain and long-term strength under uniaxial compression[J].Journal of Liaoning Technical University (Natural Science Edition),2012,31(3):358-361. |
| |
| Authors: | XU Nianchun YANG Xiaoyuan QIN Juan |
| |
| Institution: | 1.School of Architecture and Civil Engineering,Chongqing University of Science & Technology,Chongqing 401331,China;2.Institute of Earthquake Engineering,Chongqing Earthquake Bureau,Chongqing 401147,China) |
| |
| Abstract: | Some literatures state that long-term rock strength can roughly be determined according to the maximum value of rock sample’s bulk strain under uniaxial compression.In order to study the relationship between rock’s bulk strain and long-term strength,the uniaxial compression tests on four sandstone samples have been carried out with the measurement of sample deformation in radial direction using a micrometer.The result shows that the curve of bulk strain-stress in axial direction is extremely irregular.Therefore,the long-term rock strength cannot be measured from the variation characteristics of bulk strain. |
| |
| Keywords: | rock creep uniaxial compression bulk strain long-term strength shear failure micrometer deformation in radial direction |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
