A Case Study of Optimization and Application of Soft-Rock Roadway Support in Xiaokang Coal Mine, China

Table 2

Simulation scheme for parameter optimization of the anchor bolt and cable.

Support type	Plans in Figure 12	Parameters
		Space (mm)	Pretightening force (kN)	Length (mm)
Anchor bolt	(a)	1200, 1000, 800	100	2.4
	(b)	800	40, 60, 100	2.4
	(c)	800	100	1.8, 2.2, 2.4
Anchor cable	(d)	—	60, 105, 150	7.3
	(e)	—	150	5.3, 6.3, 7.3