Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Flood discharge structure of concrete gravity dam
The invention provides a flood discharge structure of a concrete gravity dam. The structure is arranged at an overflow dam section of the concrete gravity dam. The flood discharge structure comprisesa water retaining wall of the overflow dam section, an overflow wall distributed at the upstream side of the water retaining wall, an overflow groove formed in the downstream side of the overflow wall, a water collecting pool formed at the upstream side of the water retaining wall, a stilling sill arranged at the bottom of the water collecting pool, and a vertical shaft type spillway formed in theoverflow dam section. The vertical shaft type spillway comprises a vertical shaft flood discharge section, a horizontal flood discharge section and a connecting flood discharge section connected between the vertical shaft flood discharge section and the horizontal flood discharge section; the upper end of the vertical shaft flood discharge section extends to the bottom of the water collecting pool and is communicated with the water collecting pool; and an outlet of the horizontal flood discharge section is located in a downstream river channel. According to the flood discharge structure of the concrete gravity dam, by arranging the overflow wall, the width of a water inlet front edge can be increased, and the flood discharge capacity is improved; and discharged water flow is collected through the water collecting pool, so that the width of the discharged water flowing into a river is reduced, energy dissipation is conducted on the discharged water flow through the stilling still and the vertical shaft type spillway, and scouring of the discharged water flow to a downstream side slope is reduced.
本发明提供一种混凝土重力坝的泄洪结构，设置在混凝土重力坝的溢流坝段处，泄洪结构包括溢流坝段的挡水墙、分布在挡水墙上游侧的溢流墙、形成在溢流墙下游侧的溢流槽、形成在挡水墙上游侧的汇水池、布置在汇水池底部的消力坎、以及开设在溢流坝段内的竖井式溢洪道，竖井式溢洪道包括竖井泄洪段、水平泄洪段、以及连接在竖井泄洪段和水平泄洪段之间的连接泄洪段，竖井泄洪段的上端延伸至汇水池的底部、并与汇水池连通，水平泄洪段的出口位于下游河道中。本申请通过设置溢流墙能够增加进水前沿宽度，提高泄洪能力；通过汇水池汇集下泄水流，减小下泄水流入河宽度，并通过消力坎和竖井式溢洪道对下泄水流进行消能，减少下泄水流对下游边坡的冲刷。
Flood discharge structure of concrete gravity dam
The invention provides a flood discharge structure of a concrete gravity dam. The structure is arranged at an overflow dam section of the concrete gravity dam. The flood discharge structure comprisesa water retaining wall of the overflow dam section, an overflow wall distributed at the upstream side of the water retaining wall, an overflow groove formed in the downstream side of the overflow wall, a water collecting pool formed at the upstream side of the water retaining wall, a stilling sill arranged at the bottom of the water collecting pool, and a vertical shaft type spillway formed in theoverflow dam section. The vertical shaft type spillway comprises a vertical shaft flood discharge section, a horizontal flood discharge section and a connecting flood discharge section connected between the vertical shaft flood discharge section and the horizontal flood discharge section; the upper end of the vertical shaft flood discharge section extends to the bottom of the water collecting pool and is communicated with the water collecting pool; and an outlet of the horizontal flood discharge section is located in a downstream river channel. According to the flood discharge structure of the concrete gravity dam, by arranging the overflow wall, the width of a water inlet front edge can be increased, and the flood discharge capacity is improved; and discharged water flow is collected through the water collecting pool, so that the width of the discharged water flowing into a river is reduced, energy dissipation is conducted on the discharged water flow through the stilling still and the vertical shaft type spillway, and scouring of the discharged water flow to a downstream side slope is reduced.
本发明提供一种混凝土重力坝的泄洪结构，设置在混凝土重力坝的溢流坝段处，泄洪结构包括溢流坝段的挡水墙、分布在挡水墙上游侧的溢流墙、形成在溢流墙下游侧的溢流槽、形成在挡水墙上游侧的汇水池、布置在汇水池底部的消力坎、以及开设在溢流坝段内的竖井式溢洪道，竖井式溢洪道包括竖井泄洪段、水平泄洪段、以及连接在竖井泄洪段和水平泄洪段之间的连接泄洪段，竖井泄洪段的上端延伸至汇水池的底部、并与汇水池连通，水平泄洪段的出口位于下游河道中。本申请通过设置溢流墙能够增加进水前沿宽度，提高泄洪能力；通过汇水池汇集下泄水流，减小下泄水流入河宽度，并通过消力坎和竖井式溢洪道对下泄水流进行消能，减少下泄水流对下游边坡的冲刷。
Flood discharge structure of concrete gravity dam
一种混凝土重力坝的泄洪结构
GONG XUWEI (Autor:in) / ZOU HAO (Autor:in) / HUANG SHENGQUAN (Autor:in)
02.02.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
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