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摘要

An environmentally friendly construction method of purifying river water by using a multifunctional sluice is provided to purify the river water by discharging water in a lower layer in the water storage space through a lower space of a sluice, thereby discharging contaminants such as accumulated sludge together with the water discharged. An environmentally friendly construction method of purifying river water by using a multifunctional sluice installed to purify contaminated water into clean water comprises: rotatably connecting connection links(22) between a rotary shaft(21) of a sluice(20) and a bottom part of a waterway(11); forming catching plates(26) on the bottom part of a water storage side of the sluice; forming sealed spaces(12) in both supporting structures(10) through housings(13); drawing out one ends of the drive shafts to the outside of the sealed spaces through the housings while rotatably supporting drive shafts(23) to supports(40) within the sealed spaces; respectively fixing operating links(25) to top parts of the drive shafts, and rotatably fixing rear ends of the lifting cylinders to one sides of the sealed spaces while rotatably fixing front ends of piston rods of lifting cylinders(50) to the operating links; fixing lifting plates(24) to the outside of the sealed spaces of the drive shafts; and lifting up or turning over the sluice according to expansion or contraction of opening/closing cylinders(30) to open or close the sluice.