Seepage Force and Its Direct Mechanical Effects in Hydrate-Bearing Porous Media

Figure 6

An unsaturated system composed of two idealized spherical generalized solid particles under static gas and capillary water pressure, including two subsystems: (a) an unsaturated system where the effective pore space is occupied by the gas and capillary water together; (b) a subsystem where the effective pore space is fully filled with the gas under homogenized gas pressure; (c) a subsystem where the effective pore space is completely occupied by the capillary water under homogenized capillary water pressure.