The Use of the Direct Optimized Probabilistic Calculation Method in Design of Bolt Reinforcement for Underground and Mining Workings

Table 1

𝛽 stratification coefficient.

Number of strata	1	2	3	4	5	6	7	8	9	10
𝛽	1.0	0.95	0.90	0.86	0.82	0.79	0.76	0.73	0.71	0.70