An Experimental Study on Coal Fines Migration during Single Phase Water Flow

Figure 7

The characteristic of coal fines intrusion under different coal fines size. (a) The condition: coal fines size of 80-120 mesh, flow velocity of 6 mL/min, and confining pressure of 6 MPa. (b) The condition: coal fines size of 120-160 mesh, flow velocity of 6 mL/min, and confining pressure of 6 MPa.

(a)

(b)