Mechanical Characteristics and Burst-Prone Experiments of T3xj6 Sandstone in Yongchuan Coal Mine, Sichuan Province
In order to understand the mechanical characteristics and burst-prone nature of Upper Triassic Xujiahe (T3xj6) sandstone in Yongchuan coal mine, experiments were conducted using MTS815 rock testing system made in U.S. Indexes of burst-prone were analyzed using the area tool in Origin7.5, which avoided the shortcomings of low precision in area calculation under peak. Results of the experiments indicated that the T3xj6 sandstone has low mechanical characteristics, showing a low Young’s modulus, medium strength and plastic deformation.T3xj6 sandstone was burst-prone, but normally fair and locally intensive.