Experimental Study on Shear Strength of Root Composite Tailing Soil Based on Interfacial Bonding

Table 6

Calculation results of measured value and model value of root additional cohesion.

Types	RAR	Measured value			Predicted value of WU model		Modified WU model predicted value
		Tensile strength/MPa	Pulling strength/MPa	Shear strength amount of increase/kPa	Shear strength amount of increase/kPa	Growth rate/%	Shear strength amount of increase/kPa	Growth rate/%
RS	0.21	16.15	5.10	4.58	40.70	788.60	12.84	180.37	0.36
	0.42	16.15	5.10	5.21	40.70	681.15	18.06	246.59	0.29
	0.63	16.15	5.10	6.38	40.70	537.90	38.92	386.81	0.21
NRS	0.21	16.15	7.17	8.31	81.40	879.49	25.68	209.04	0.32
	0.42	16.15	7.17	8.55	81.40	852.00	36.11	322.39	0.24
	0.63	16.15	7.17	9.27	81.40	778.06	77.85	570.09	0.15
GRS	0.21	16.15	12.32	14.10	122.09	765.91	38.52	173.21	0.37
	0.42	16.15	12.32	14.17	122.09	761.64	54.17	282.30	0.26
	0.63	16.15	12.32	14.90	122.09	719.42	116.77	525.34	0.16