A New Evaluation Method for the Uniaxial Compressive Strength ahead of the Tunnel Face Based on the Driving Data and Specification Parameters of TBM

Table 1

Equations correlating the UCS to PLSI.

References	Expression
Broch and Franklin [4]
ISRM [10]
Norbury [11]
Tsidzi [12]
Grasso et al. [13]
Singh and Singh [14]
Kahraman [15]
Lashkaripour [16]
Quane and Russel [17]
Kahraman et al. [18]
Diamantis et al. [19]
Kohno and Maeda [20]
Azimian et al. [21]