Sensitivity Analysis in the Estimation of Mechanical Parameters of Engineering Rock Mass Based on the Hoek–Brown Criterion

Table 1

The detailed data involved in the calculation of GSI.

Monitoring hole	Discontinuity length	Separation	Roughness	Infilling	Weathering	JCond89	RQD	GSI
K0+320-0-1	1	1	6	6	6	20	50	53
K0+320-0-2	1	1	5	6	5	18	46	50

Note: the guidelines for classification of discontinuity conditions proposed by Bieniawski [27] are used to rate the factors in Table 1.