Abstract
Water sheet jet through clearance of dam gate rubber seal appears when a inflatable seal is unloaded to change the dam gate opening. The jet attacks equipment or construction near conduit outlet, causing them some damages. Authors present a flow guide to turn the sheet jet to a mild inner flow, using a vacant space in guide flame. The guide consists of plates in raw and a flow channel. Special feature of the plates is that they are set with not only attack angle but dihedral angle against the jet. Optimum angles and configuration of the channel were examined by experiment. The guide presented here is to be installed in a dam gate of head of 106m in Japan.
