三轴压缩作用下自然浸水红砂岩静态力学性能研究
Study on Static Mechanical Properties of Naturally Immersed Red Sandstone under Triaxial Compression
王瑞璐 1韦朝仁 2楼嘉源 1郭智涵1
作者信息
- 1. 衢州学院,浙江衢州 324000
- 2. 中国冶金地质总局浙江地质勘查院,浙江衢州 324000
- 折叠
摘要
为研究围压对自然浸水红砂岩静态力学性能的影响规律,对自然浸水红砂岩开展0～15MPa下的三轴压缩试验.试验结果表明:无围压下,自然浸水红砂岩的应力-应变曲线有明显的压密阶段.随着围压的增加,偏差应力-应变曲线中不再出现压密阶段.试样的偏差应力-应变曲线均呈现明显的屈服平台.峰值偏差应力、峰值应变和弹性模量均随围压的增加而增大.且峰值偏差应力、峰值应变和弹性模量均与围压呈幂函数增加关系.
Abstract
To investigate the effect of confining pressure on the static mechanical properties of naturally soaked red sandstone,triaxial compression tests under confining pressures ranging from 0 to 15 MPa were performed on naturally soaked red sandstone.The test results show that under no confining pressure,the stress-strain curve of naturally soaked red sandstone exhibits a distinct compaction stage.However,as the confining pressure increases,the compaction stage no longer appears in the deviatoric stress-strain curve.All the deviatoric stress-strain curves of the samples exhibit a clear yield platform.The peak deviatoric stress,peak strain,and elastic modulus increase with increasing confining pressure,showing a power function increase relationship with the confining pressure.
关键词
红砂岩/围压/力学性能Key words
red sandstone/confining pressure/mechanical properties引用本文复制引用
出版年
2024
NETL
NSTL
万方数据