Non-Darcy Flow in Hydraulic Flushing Hole Enlargement-Enhanced Gas Drainage: Does It Really Matter?

Table 1

Numerical simulation schemes.

Cases	Stress redistribution	Gas-coal interaction	Klinkenberg effect	Non-Darcy effect	Radius
Case A					0.054 m
Case B	√				0.5 m
Case C	√	√
Case D	√		√
Case E	√			√
Case F	√	√	√	√