Overall Stability Analysis of Xiluodu High Arch Dam Based on Fine Three-Dimension Numerical Modeling

Table 1

Characteristics of dislocation zone in the interlayer of the dam area.

Place	Weak zone	EL (m)	Thickness (m)	Attitude	Shear resistance		Shear
					f′	c′ (MPa)	f	C (MPa)
Left bank	C9	536	0.5	N25°W/NE∠4°	0.35	0.05	0.30	0
					0.40	0.07	0.34	0
	C8	513	0.5	N35°W/NE∠5°	0.35	0.05	0.30	0
					0.44	0.10	0.37	0
	C7	479	0.6	N25∼35°W/NE∠4∼7°	0.55	0.25	0.47	0
	Lc6	403	0.6	N20°∼40°WNE∠8°∼11°	0.44	0.10	0.37	0
	Lc5	380	0.6	N20°∼30°WNE∠4°∼7°	0.55	0.25	0.47	0
	C3	339	0.5	N18°∼23°WNE∠5°∼8°	0.43	0.08	0.37	0
					0.44	0.10	0.37	0
Right bank	C9	562	0.5	N36°E/SE∠2∼5°	0.35	0.05	0.30	0
					0.4	0.07	0.34	0
	C8	536	0.5	N38°E/SE∠4°	0.43	0.08	0.37	0
					0.44	0.10	0.37	0
	C7	497	0.6	N30∼35°E/SE∠4∼6°	0.43	0.08	0.37	0
					0.55	0.25	0.47	0
	Lc6	424	0.6	N30°∼40°ESE∠8°∼10°	0.43	0.08	0.37	0
					0.44	0.10	0.37	0
	Lc5	385	0.6	N30°∼40°ESE∠8°∼10°	0.55	0.25	0.47	0
	C3	345	0.5	N24°E/SE∠4°∼5°	0.50	0.17	0.42	0
River bed	C2	302	0.5	N25-30°W/SW∠5–10°	0.35	0.05	0.35	0
	P2βn	240	1.8	N25-30°W/SW∠5–10°	0.35	0.05	0.35	0