Using MTS Ultrasonic Measurement System, we studied the influences of water of saturation and pore pressure on velocities of compressional (P) and shear (S) waves in exposure rock specimens.
我们用MTS的超声波测试系统研究了地表岩样饱和水及孔隙压力对纵横波速度的影响。
2
Based on field measurement, the authors describe zone of influence of abutment pressure, rules of its change, loosening of the surrounding rock and the stability of roadways.
Along with the construction of various pressure tunnels, the new measurement requirement of mechanical parameters for rock mass has been brought forward.