Triaxial experiment of Qingshankou shales: Stress-strain data and ultrasonic wave velocities measurement

Two shale samples cored in the direction parallel (H) and perpendicular (V) to the shale bedding are tested under triaxial cyclic loading conditions. Stress-strain data and ultrasonic P- and S-wave velocities are acquired.本试验选取两块分别沿平行于页岩层理方向（记为H）与垂直于页岩层理方向（记为V）取心的页岩试样，在三轴循环加载条件下开展测试，同步采集应力-应变数据以及超声波纵波（P-wave）与横波（S-wave）的速度。