Progressive Failure and Fracture Mechanism of Sandstone under Hydraulic-Mechanical Coupling

Figure 2

Rock mechanics experimental system. a –oil source, b –axis, enclosure, pore water loading pump, c –monitor and control panel, d –computer acquisition control system, e –base lift pump, f –base (f-1 axial sensor, f-2 radial sensor), g –power, h –pressure pump for confining pressure room.