Different Deformation Patterns in High Core Wall Rockfill Dams: A Case Study of the Maoergai and Qiaoqi Dams

Table 3

Physical properties of the overburden layers in the Maoergai dam.

Deposits		alQ4	al + PlQ4	alQ3	al + PlQ3
Grain content (mean)	>200	11.9%	—	11.5%	7.2%
	60–200	24.5%	7.6%	24.8%	29.3%
	2–60	42.1%	30.9%	39.6%	41.7%
	2–0.075	26.3%	70.1%	29.1%	28.1%
	<0.075	1.2%	19.3%	7.5%	8.8%
Mean dry density (g/cm³)		2.2	2.0	2.1	2.0
Thickness (m)		6–11	8–18	10–20	5–12
Mean permeability (cm/s)		1.8e–1	2.2e–2	1.5e–1	3.5e–3