Abstract
The double-sided shear meso test equipment for rock, was developed independently for the study on the mesoscopic damage mechanical properties of rock under double-sided shearing. Using the equipment, the mechanical properties of rock under double-sided shearing could be identified, and the shear strength and deformation characteristics of rock could be studied. Mesoscopic observation system and acoustic emission system could be used to study the mesoscopic damage mechanical properties of rock under double-sided shearing. Further, non-restrictively double-sided shear mesoscopic mechanical properties tests of drying sandstone were carried out. Double-sided shear stress-strain curves, crack evolution near left and right predetermined shear plane, and mesoscopic crack distribution were obtained. The results show that crack evolution and meso-crack distribution characteristics are significantly different compared with single shear. Using this equipment to carry out the rock double-sided shear mesoscopic tests under different conditions can study the rock double-sided shear failure mechanism based on mesoscopic damage mechanics.
| Original language | English |
|---|---|
| Pages (from-to) | 3396-3404 |
| Number of pages | 9 |
| Journal | Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) |
| Volume | 46 |
| Issue number | 9 |
| DOIs | |
| State | Published - 1 Sep 2015 |
| Externally published | Yes |
Keywords
- Crack evolution
- Double-sided shear
- Mesoscopic observation
- Rock mechanics
- Sandstone