Selection of Optimal Threshold of Generalised Rock Quality Designation Based on Modified Blockiness Index

Table 10

Average generalised RQD values with different thresholds of the dam rock mass.

t (mm)	100	200	300	400	500	600	700	800	900	1000
RQDt	96.96	75.45	50.32	31.95	20.81	12.86	7.30	3.55	2.40	0.00