Analysis on the Influence Degree of Deformation Control Factors of Deep-Buried Roadway’s Fractured Surrounding Rock Using Orthogonal Design

Table 9

The range of calculation results for each factor.

Item	Control factor				The order of control factors
	Bolt length	Row spacing between bolts	Cable length	Row spacing in U-shaped steel
Roof, R	9.3	4.0	9.3	31.7	Du > Lb = Lc > Db
Floor, R	1.0	1.3	0.3	3.0	Du > Db > Lb > Lc
Left sidewall, R	2.0	2.7	1.0	7.3	Du > Db > Lb > Lc
Right sidewall, R	1.7	2.3	0.3	5.7	Du > Db > Lb > Lc
Total deformation, R	13.0	7.7	10.7	47.7	Du > Lb > Lc > Db