Study on Anchor Cable instead of Single Hydraulic Prop Support in Advance Support of Deep Roadway

Table 1

Relationship between number of anchor cables and row spacing.

(mm)	800	900	1000	1200	1400	1600
n	2.56	2.88	3.2	3.84	4.48	5.12
N/root (recommended)	3	3	4	4	5	6