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

Table 6

Test results of pull-out resistance of the lower gate of the underwater mixed blockage.

Blocked objects	Blockage height (m)	Overall height (m)	Blocked objects’ area (m^2)	Blocked objects’ deadweight (kN)	Pull-out force of blockage (kN)
					Silt : sand : small stone : medium stone
					Combination 1	Combination 2	Combination 3	Combination 4	Combination 5
					1 : 1 : 1 : 1	2 : 1 : 1 : 1	1 : 2 : 1 : 1	1 : 1 : 2 : 1	1 : 1 : 1 : 2
1# steel plate	0.4	0.7	0.240	0.173	0.199	0.358	0.249	0.172	0.182
2# steel plate	0.4	0.7	0.160	0.115	0.143	0.227	0.158	0.115	0.116
3# steel plate	0.4	0.7	0.080	0.057	0.083	0.129	0.079	0.062	0.065
1# steel bar	0.4	0.7	0.031	0.029	0.030	0.088	0.043	0.035	0.024
2# steel bar	0.4	0.7	0.025	0.019	0.021	0.062	0.033	0.028	0.017
3# steel bar	0.4	0.7	0.020	0.012	0.013	0.030	0.024	0.019	0.012