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

Table 3

Drainage scheme of high gas drainage gate.

Position	Horizontal distance (m)	Vertical distance (m)
1	15	21
2	15	28
3	15	35
4	25	21
5	25	28
6	25	35
7	35	21
8	35	28
9	35	35