FISH WAY STRUCTURE FOR TOWER TYPE FISH WATCHING

摘要

Purpose: the tower fish pass structure for observing fish, which is provided to, smoothly instructs fish to an incoming flow, automatically fills water in a dry season. Construction: the tower fish pass structure for observing fish includes a sump tank (10), and a fish is to guide box (20), an observation fish pass (30), the first cut-off gate (40), the second cut-off gate. Sump tank is installed in the incoming flow of a weir (1). Fish is installed in the underflow on weir to guide box. The both ends of observation fish pass are respectively connected to fish to the top of guide box and the lower part of sump tank. First cut-off gate is installed in an opening of a total water collecting pipe (11). Total water collecting pipe is connected to the side of sump tank. First cut-off gate is mounted to be opened and closed by first cylinder. Second cut-off gate is installed in the front end of a main drain pipe (22). Main drain pipe is installed in the rear portion for the total case for being connected to fish to guide box. Second cut-off gate is mounted to be opened and closed by second cylinder.