Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Connecting structure for reducing bottom flow velocity of rotational flow spillway tunnel
The invention provides a connecting structure for reducing bottom flow velocity of a rotational flow spillway tunnel. The connecting structure which comprises a rotational flow vertical shaft and a flow guiding tunnel, and further comprises a transition section, flow dividing piers and a stilling pool; the transition section is a connecting section of the rotational flow vertical shaft and the flow guiding tunnel; the flow dividing piers are arranged in the transition section; the stilling pool is arranged at the bottom end of the rotational flow vertical shaft; the transition section comprises a vertical section, a turning section and a slope pressing section; the vertical section is connected with the slope pressing section through the turning section; and the width of the side wall of the turning section and the width of the side wall of the slope pressing section are the same as the width A of the flow guiding tunnel. According to the bottom connecting structure of the rotational flow spillway tunnel, an sudden expansion type of the transition section weakens the damming phenomenon of hydraulic jump and increases a energy dissipation space of pressure flow spiral rolling, and the pressing slope section in the transition section enables the depth of a water cushion in the rotational flow vertical shaft to be increased; and in order to reduce the rotation influence of water flow behind an outlet of the slope pressing section and enhance the structure of the connection section, the arrangement mode of adding the flow dividing piers is adopted, and in addition, in order to control flow regime of the outlet, the flow dividing piers adopt a gradual change mode.
本发明提供一种减少旋流泄洪洞底部流速的连接结构，包括旋流竖井和导流洞，包括过渡段、分流墩和消力池，所述的过渡段是旋流竖井与导流洞的连接段，所述的分流墩设在过渡段内，所述的消力池设在旋流竖井底端。所述的过渡段包括竖直段、转弯段和压坡段；所述的竖直段与压坡段通过转弯段连接，转弯段和压坡段侧墙宽度与导流洞宽度A相同。本发明提供的旋流泄洪洞底部连接结构，其过渡段突扩体型减弱了水跃的壅水现象及增大有压流漩滚的消能空间、过渡段中的压坡段使旋流竖井内水垫深度有所增加；为减小压坡段出口后水流的旋转影响，同时兼顾增强衔接段的结构，采用加分流墩的布置型式，另外为了控制出口流态，分流墩采用渐变形式。
Connecting structure for reducing bottom flow velocity of rotational flow spillway tunnel
The invention provides a connecting structure for reducing bottom flow velocity of a rotational flow spillway tunnel. The connecting structure which comprises a rotational flow vertical shaft and a flow guiding tunnel, and further comprises a transition section, flow dividing piers and a stilling pool; the transition section is a connecting section of the rotational flow vertical shaft and the flow guiding tunnel; the flow dividing piers are arranged in the transition section; the stilling pool is arranged at the bottom end of the rotational flow vertical shaft; the transition section comprises a vertical section, a turning section and a slope pressing section; the vertical section is connected with the slope pressing section through the turning section; and the width of the side wall of the turning section and the width of the side wall of the slope pressing section are the same as the width A of the flow guiding tunnel. According to the bottom connecting structure of the rotational flow spillway tunnel, an sudden expansion type of the transition section weakens the damming phenomenon of hydraulic jump and increases a energy dissipation space of pressure flow spiral rolling, and the pressing slope section in the transition section enables the depth of a water cushion in the rotational flow vertical shaft to be increased; and in order to reduce the rotation influence of water flow behind an outlet of the slope pressing section and enhance the structure of the connection section, the arrangement mode of adding the flow dividing piers is adopted, and in addition, in order to control flow regime of the outlet, the flow dividing piers adopt a gradual change mode.
本发明提供一种减少旋流泄洪洞底部流速的连接结构，包括旋流竖井和导流洞，包括过渡段、分流墩和消力池，所述的过渡段是旋流竖井与导流洞的连接段，所述的分流墩设在过渡段内，所述的消力池设在旋流竖井底端。所述的过渡段包括竖直段、转弯段和压坡段；所述的竖直段与压坡段通过转弯段连接，转弯段和压坡段侧墙宽度与导流洞宽度A相同。本发明提供的旋流泄洪洞底部连接结构，其过渡段突扩体型减弱了水跃的壅水现象及增大有压流漩滚的消能空间、过渡段中的压坡段使旋流竖井内水垫深度有所增加；为减小压坡段出口后水流的旋转影响，同时兼顾增强衔接段的结构，采用加分流墩的布置型式，另外为了控制出口流态，分流墩采用渐变形式。
Connecting structure for reducing bottom flow velocity of rotational flow spillway tunnel
一种减少旋流泄洪洞底部流速的连接结构
ZHOU HENG (Autor:in) / DI SHENGJIE (Autor:in) / LIU JING (Autor:in) / LU XI (Autor:in) / WANG WEIGUO (Autor:in) / WEI YONG (Autor:in) / LI YUJIE (Autor:in)
09.07.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
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