Model Test Research on the Influence of Gate Blocking in Siltation Environment

Table 8

Test results of pull-out force of underwater (mixed) sediment.

Blocked objects	Blockage + water/overall height (m)	Blockage height (m)	Blocked objects’ area (m^2)	Blocked objects’ deadweight (kN)	Pull-out force of blockage (kN)
					Silt : sand : small stone : medium stone = 2 : 1 : 1 : 1
					Blockage time (7 d)	Blockage time (14 d	Blockage time (21 d)	Blockage time (28 d)	Blockage time (35 d)
1# steel plate	0.70	0.50	0.300	0.173	0.419	0.533	0.642	0.727	0.780
2# steel plate	0.70	0.50	0.200	0.115	0.285	0.336	0.438	0.469	0.529
3# steel plate	0.70	0.50	0.100	0.057	0.155	0.202	0.254	0.278	0.328
1# steel bar	0.70	0.50	0.038	0.029	0.121	0.130	0.141	0.147	0.153
2# steel bar	0.70	0.50	0.031	0.019	0.073	0.092	0.103	0.109	0.116
3# steel bar	0.70	0.50	0.025	0.012	0.041	0.062	0.068	0.075	0.079