A New Method for Predicting Coal and Gas Outbursts

Table 12

Distribution of percentages of gas desorption index K_1max of drilling cuttings predicted during the field testing.

K1max (mL/g min^1/2)	Total times (157)	Percentage
≥0.1	157	100
≥0.2	157	100
≥0.3	154	98
≥0.4	147	94
≥0.5	136	87
≥0.6	114	73
≥0.7	97	62
≥0.8	83	53
≥0.9	67	43
≥1.0	49	31