SYNCHRONOUS RAPID CONSTRUCTION METHOD FOR CONCURRENT CONSTRUCTION OF NAVIGATION LOCK AND WATER GATE IN CURVED CHANNEL

Provided in the present invention is a synchronous rapid construction method for concurrent construction of a navigation lock and a water gate in a curved channel. The synchronous rapid construction method comprises the following steps: S1, at the end of the wet season, excavating an open diversion ditch, synchronously excavating a foundation pit for a navigation lock which is not on a natural channel, and constructing the navigation lock; S2, constructing a steel trestle bridge for transportation; S3, in the early stage of the dry season, closing the natural channel by using an earth-rockfill cofferdam upstream of the water gate and an earth-rockfill cofferdam downstream of the water gate, and using the open diversion ditch for the travelling of water; S4, rapidly constructing the water gate on the closed natural channel, wherein the water gate is built close to two side portions of the natural channel; S5, before the next year's flood season, breaching the earth-rockfill cofferdam upstream of the water gate