Experimental Study on Calculation Method of Drainage Capacity of Drainage Facilities Affected by Overtopping on Artificial Island

Table 2

Overtopping results under different conditions (unit: 10⁻³ m³/(m.s)).

No	B (m)	Section type	Design scheme			Optimization scheme
			Elevation of CAP (m)	Overtopping		Elevation of CAP (m)	Overtopping
				Return period 100a	Return period 300a		Return period 100a	Return period 300a
K1	64.4	M = 1.5 slope	7.5	0.00	1.22	7.0	0.19	1.51
K2	40.0		7.5	1.87	12.20	7.0	2.01	17.03
K3	40.0	Vertical structure	7.8	6.92	15.24	7.5	8.51	27.07
K4	40.0		7.8	4.91	13.10	7.5	10.93	25.16
K5	40.0		7.8	1.86	6.29	7.5	10.11	21.15
K6	40.0		7.8	1.34	4.20	7.5	3.03	9.72
K7	40.0	M = 1.5 slope vertical structure	7.5	2.53	7.19	7.5	3.12	9.18
K8	40.0		7.5	9.90	24.07	7.5	11.95	21.78
K9	40.0		7.0	3.75	12.21	6.5	6.60	20.95
K10	45.0		7.0	3.00	11.70	6.5	6.90	25.01
K11	40.0	m = 1.5 slope	7.5	6.46	23.60	7.5	5.03	22.99
K12	40.0		7.5	2.62	16.61	7.5	2.98	16.59
K13	40.0		7.5	1.62	8.77	7.5	2.21	9.05
K14	40.0		7.5	1.64	9.72	7.5	1.98	10.35
K15	40.0		7.5	2.66	11.20	7.5	3.28	13.57
K16	40.0		7.5	1.57	8.33	7.5	1.94	9.94
K17	40.0		7.5	2.43	6.78	7.5	2.60	7.79
K18	40.0		7.5	0.45	4.61	7.5	1.28	5.13
K19	84.8		7.5	0.25	1.88	7.5	0.63	2.72