Application of Probabilistic Method to Stability Analysis of Gravity Dam Foundation over Multiple Sliding Planes

Table 4

Description of the slip paths and the value of the material properties of the sliding planes.

Number of slip paths	Name of sliding planes comprising the paths	Angle of apparent dip/°	Characteristics	Strength against shear fracture
					/MPa
A	A1-A2	90	Tensile fractured plane at dam heal	0.000	0.000
	A2-A3	−16	Clastic with mud	0.375	0.075
	A3-A4	−16	Clastic and fragment	0.475	0.125
	A4-A5	−16	Clastic with mud	0.375	0.075
	A5-A6	0	Dam base	1.150	1.125
B	B1-B2	90	Tensile fractured plane at dam heal	0.000	0.000
	B2-B3	−14	Clastic with mud	0.375	0.075
	B3-B4	−16	Clastic and fragment	0.475	0.125
	B4-B5	−14	Clastic with mud	0.375	0.075
C	C1-C2	90	Tensile fractured plane at dam heal	0.000	0.000
	C2-C3	−15	Clastic and fragment	0.475	0.125
	C3-C4	−19	Rock bridge (II)	1.275	1.550
	C4-C5	−16	Mud with silty grain clastic	0.275	0.030
	C5-C6	−16	Rock bridge (III1)	1.050	0.850