Study on Gas Control in Goaf of High Gas Coal Seam: A Case Study of Tingnan Coal Mine, China

Table 4

Simulation results from position 1 to position 9.

Position	Drainage concentration in high-drainage way (%)	Gas concentration in upper corner (%)	Pure quantity of drainage (m^3/min)
1	16.29	0.35	19.55
2	16.13	0.92	19.36
3	15.79	2.83	18.95
4	20.97	0.97	25.16
5	21.55	0.60	25.86
6	21.32	1.27	25.58
7	20.34	1.36	24.41
8	21.29	1.14	25.55
9	21.19	1.88	25.43