Safety Standard for Special Class Damslopes Based on Reliability Analysis

Table 7

Statistical parameters of the three ultrahigh dams in China with heights of more than 200 m.

Dam name	Dam height (m)	Material	Density ρ (kg/m^3)	Nonlinear strength parameters
				φ0 (°)	Δφ (°)
Nuozhadu	261.5	(1) and (2): upstream rockfill	2150	52.0	8.5
		(3): transition material	2100	51.0	8.4
		(4): filter material	2080	50.0	8.3
		(6): downstream rockfill	2030	51.0	8.4
Shangzhai	254	(1): coverage material	2100	46.0	9.0
		(2): main rockfill material	2320	52.0	8.2
		(3): secondary rockfill material	2230	49.0	10.2
		(4): downstream rockfill	2120	46.0	9.0
Lianghekou	295	(1): fine rockfill	2000	51.5	8.4
		(2): rockfill material II	2110	49.1	9.1
		(5): transition material	2040	49.1	6.7
		(6): filter material	1940	49.9	10.1