| 摘要 |
PROBLEM TO BE SOLVED: To provide a gate opening and closing operation method of a river structure and its device capable of automatically opening a gate when an actual difference between inside and outside water levels detected by a difference sensor provided to the lower part of the gate becomes larger than a set point set in advance. SOLUTION: In the gate opening and closing operation device of the river structure 1 opening and closing the gate 7 by an opening and closing device 9 resulting from a difference between an inner water level on the inner water side 3 and an outer water level on the outer water side 5, the difference sensor 15 of an inside and outside water level difference detector is provided to the lower part of a skin plate 35 in the gate 7, a difference operator 25 connected to the difference sensor 15 through an electric cable 23 is located on the ground and, at the same time, when the gate 7 is opened and closed by the opening and closing device 9, a cable length adjusting means 19 adjusting the length of the electric cable 23 is provided on the ground. COPYRIGHT: (C)2006,JPO&NCIPI
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