Determination of the Peak and Residual Shear Strengths of the Sandwich Material in Slopes

Table 2

Macroscopic response mechanism upon change of microscopic parameters.

Parameters	Elastic modulus	Shear modulus	Cohesion	Internal friction angel	Ps	Rs
Porosity ()	+	+	++	++	++	++
Contact stiffness ()	++	+	+	+	+	+
Stiffness ratio ()	++	+	+	+	+	+
Friction between particles (fric)	−	−	++	++	++	+++
Normal bond strength (NB)	−	+	+++	+++	+++	+
Shear bond strength (SB)	−	+	+++	+++	+++	+
Vertical pressure ()	−	+	++	++	++	++
Loading rate ()	−	−	+	+	+	+

Note. “+++” denotes “in close correlation”; “++” denotes “in important correlation”; “+” denotes “in partial correlation”; and “−” denotes that “there is little correlation” or “there is almost no correlation.” The “PS” denotes the peak strength and “RS” denotes “residual strength.”