Influence of Parallel Joint Spacing and Rock Size on Rock Bulk Modulus

Table 1

Research plans [15].

Numerical simulation	PJS (mm)	Research plans
		Plan 1	Plan 2	Plan 3	Plan 4	Plan 5	Plan 6	Plan 7
		l = 100 mm	l = 200 mm	l = 400 mm	l = 600 mm	l = 800 mm	l = 1000 mm	l = 1200 mm
Plan 8	s = 10	10 × 100	10 × 200	10 × 400	10 × 600	10 × 800	10 × 1000	10 × 1200
Plan 9	s = 20	20 × 100	20 × 200	20 × 400	20 × 600	20 × 800	20 × 1000	20 × 1200
Plan 10	s = 30	30 × 100	30 × 200	30 × 400	30 × 600	30 × 800	30 × 1000	30 × 1200
Plan 11	s = 40	40 × 100	40 × 200	40 × 400	40 × 600	40 × 800	40 × 1000	40 × 1200
Plan 12	s = 50	50 × 100	50 × 200	50 × 400	50 × 600	50 × 800	50 × 1000	50 × 1200

s is the parallel joint spacing, and l is the rock size.