UPPER STREAM RIVER DAM APPARATUS FOR PREVENTING EXPANSION OF RIVER POLLUTION

摘要

The present invention relates to a dam device in an upper stream, capable of preventing stream contamination from being spread by including an improved structure for completely closing a sluice by preventing foreign substances from being caught between a dam main body and the sluice. According to an embodiment of the present invention, while the sluice ascends, a scrapper drags the foreign substances caught in an insertion groove by moving forwards and backwards along the insertion groove and moves to a recession groove or an extension groove. Therefore, the dam device discharges the foreign substances through a drain hole and prevents the sluice from not being completely closed due to the foreign substances caught in the insertion groove.