A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROBLEM TO BE SOLVED: To provide a fishway allowing fishes to run up easily managing the maintenance at a low cost.SOLUTION: A fishway 1A connects a dam lake 3 which is located at the upstream of a dam 2 to a lower water channel 4 which is located at the downstream of the dam 2. The fishway 1A includes: an upstream run up cylinder 51; a downstream run up cylinder 52; and first-seventh butterfly valves 71-77. Each of the upstream run up cylinder 51 and the downstream run up cylinder 52 has a cylindrical shape and extends in a longitudinal direction from the dam lake 3 to the lower water channel 4 and a guide path 5i formed therein. The first-seventh butterfly valves 71-77 are disposed at two points or more in the longitudinal direction of the upstream run up cylinder 51 and the downstream run up cylinder 52, and the valve body 41 is operable to open and close by means of pivot unit 42. The valve body 41 of the first-seventh butterfly valves 71-77 is formed with a cutout 41a.SELECTED DRAWING: Figure 1
【課題】魚類等を遡上させることができるとともに、建設費を低減でき、かつ維持管理が容易な魚道を提供する。【解決手段】本発明の魚道１Ａは、ダム２の上流側に位置するダム湖３と、ダム２の下流側に位置する低水路４とを接続している。魚道１Ａは、上流側遡上用筒体５１と、下流側遡上用筒体５２と、第１〜７バタフライ弁７１〜７７とを備えている。上流側遡上用筒体５１及び下流側遡上用筒体５２は、筒状をなしてダム湖３から低水路４まで長さ方向に延び、内部に誘導路５ｉを形成している。第１〜７バタフライ弁７１〜７７は、上流側遡上用筒体５１及び下流側遡上用筒体５２に長さ方向で２箇所以上で設けられ、それぞれ弁体４１を軸支部４２によって開閉可能である。第１〜７バタフライ弁７１〜７７の弁体４１には、切欠き４１ａが形成されている。【選択図】図１
PROBLEM TO BE SOLVED: To provide a fishway allowing fishes to run up easily managing the maintenance at a low cost.SOLUTION: A fishway 1A connects a dam lake 3 which is located at the upstream of a dam 2 to a lower water channel 4 which is located at the downstream of the dam 2. The fishway 1A includes: an upstream run up cylinder 51; a downstream run up cylinder 52; and first-seventh butterfly valves 71-77. Each of the upstream run up cylinder 51 and the downstream run up cylinder 52 has a cylindrical shape and extends in a longitudinal direction from the dam lake 3 to the lower water channel 4 and a guide path 5i formed therein. The first-seventh butterfly valves 71-77 are disposed at two points or more in the longitudinal direction of the upstream run up cylinder 51 and the downstream run up cylinder 52, and the valve body 41 is operable to open and close by means of pivot unit 42. The valve body 41 of the first-seventh butterfly valves 71-77 is formed with a cutout 41a.SELECTED DRAWING: Figure 1
【課題】魚類等を遡上させることができるとともに、建設費を低減でき、かつ維持管理が容易な魚道を提供する。【解決手段】本発明の魚道１Ａは、ダム２の上流側に位置するダム湖３と、ダム２の下流側に位置する低水路４とを接続している。魚道１Ａは、上流側遡上用筒体５１と、下流側遡上用筒体５２と、第１〜７バタフライ弁７１〜７７とを備えている。上流側遡上用筒体５１及び下流側遡上用筒体５２は、筒状をなしてダム湖３から低水路４まで長さ方向に延び、内部に誘導路５ｉを形成している。第１〜７バタフライ弁７１〜７７は、上流側遡上用筒体５１及び下流側遡上用筒体５２に長さ方向で２箇所以上で設けられ、それぞれ弁体４１を軸支部４２によって開閉可能である。第１〜７バタフライ弁７１〜７７の弁体４１には、切欠き４１ａが形成されている。【選択図】図１
FISHWAY
魚道
HATTORI HIROYUKI (author)
2016-02-18
Patent
Electronic Resource
Japanese
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau