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

Table 6

Values of a and b under different rock sizes.

Parameter	Values
	l = 100 mm	l = 200 mm	l = 400 mm	l = 600 mm	l = 800 mm	l = 1000 mm	l = 1200 mm
A	0.027	0.013	0.012	0.005	0.004	0.004	0.004
B	1.089	0.473	0.143	0.128	0.100	0.053	0.036