Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cavern structure for improving flow state of bottom of rotational flow spillway tunnel
The invention provides a cavern structure for improving the flow state of the bottom of a rotational flow spillway tunnel. The cavern structure for improving the flow state of the bottom of the rotational flow spillway tunnel comprises a rotational flow vertical shaft and a diversion tunnel, and further comprises a transition section, a water diversion plate and a stilling pool, wherein the transition section is arranged between the rotational flow vertical shaft and the diversion tunnel; the water diversion plate is arranged at the tail end of the transition section, a plurality of water passing holes are formed in the water diversion plate, the width of the water diversion plate is the same as the width D of the diversion tunnel, and the height h1 of the water diversion plate is (0.2-0.8) times of the height of the diversion tunnel; the stilling pool is arranged at the bottom of the rotational flow vertical shaft. According to the cavern structure for improving the flow state of the bottom of the rotational flow spillway tunnel, the section of the transition section is suddenly reduced compared with the section of the rotational flow vertical shaft, on one hand, the submerged water depth height of the bottom of the rotational flow vertical shaft can be increased, the water flow form can be improved, and on the other hand, the energy dissipation rate of the bottom of the rotational flow vertical shaft can be increased; in addition, the section of the transition section is horseshoe-shaped, connection with an original diversion tunnel is simpler, and cavern excavation construction is simpler; the water diversion plate is additionally arranged at the joint of the tail end of the transition section and the original diversion tunnel, so that the flow state of water flow at the tail end of the rotational flow vertical shaft is more regular.
本发明提供一种改善旋流泄洪洞底部流态的洞室结构，包括旋流竖井和导流洞，还包括过渡段、分水板和消力池；所述过渡段设在旋流竖井与导流洞之间；所述的分水板设在过渡段末端；所述的分水板上布置多个过水孔，所述的分水板宽度与导流洞洞宽D相同，分水板高度h1为导流洞洞高的（0.2~0.8）倍；所述的消力池设在旋流竖井底部。本发明中过渡段断面较旋流竖井断面突然减小，一方面可以增大旋流竖井底部淹没水深高度，改善水流形态，另一方面可以增大旋流竖井底部消能率，另外，过渡段断面呈马蹄形，与原有导流洞衔接更简单，使洞室开挖施工更简单。在过渡段末端与原导流洞衔接处增加分水板，使得旋流竖井末端水流流态更规整。
Cavern structure for improving flow state of bottom of rotational flow spillway tunnel
The invention provides a cavern structure for improving the flow state of the bottom of a rotational flow spillway tunnel. The cavern structure for improving the flow state of the bottom of the rotational flow spillway tunnel comprises a rotational flow vertical shaft and a diversion tunnel, and further comprises a transition section, a water diversion plate and a stilling pool, wherein the transition section is arranged between the rotational flow vertical shaft and the diversion tunnel; the water diversion plate is arranged at the tail end of the transition section, a plurality of water passing holes are formed in the water diversion plate, the width of the water diversion plate is the same as the width D of the diversion tunnel, and the height h1 of the water diversion plate is (0.2-0.8) times of the height of the diversion tunnel; the stilling pool is arranged at the bottom of the rotational flow vertical shaft. According to the cavern structure for improving the flow state of the bottom of the rotational flow spillway tunnel, the section of the transition section is suddenly reduced compared with the section of the rotational flow vertical shaft, on one hand, the submerged water depth height of the bottom of the rotational flow vertical shaft can be increased, the water flow form can be improved, and on the other hand, the energy dissipation rate of the bottom of the rotational flow vertical shaft can be increased; in addition, the section of the transition section is horseshoe-shaped, connection with an original diversion tunnel is simpler, and cavern excavation construction is simpler; the water diversion plate is additionally arranged at the joint of the tail end of the transition section and the original diversion tunnel, so that the flow state of water flow at the tail end of the rotational flow vertical shaft is more regular.
本发明提供一种改善旋流泄洪洞底部流态的洞室结构，包括旋流竖井和导流洞，还包括过渡段、分水板和消力池；所述过渡段设在旋流竖井与导流洞之间；所述的分水板设在过渡段末端；所述的分水板上布置多个过水孔，所述的分水板宽度与导流洞洞宽D相同，分水板高度h1为导流洞洞高的（0.2~0.8）倍；所述的消力池设在旋流竖井底部。本发明中过渡段断面较旋流竖井断面突然减小，一方面可以增大旋流竖井底部淹没水深高度，改善水流形态，另一方面可以增大旋流竖井底部消能率，另外，过渡段断面呈马蹄形，与原有导流洞衔接更简单，使洞室开挖施工更简单。在过渡段末端与原导流洞衔接处增加分水板，使得旋流竖井末端水流流态更规整。
Cavern structure for improving flow state of bottom of rotational flow spillway tunnel
一种改善旋流泄洪洞底部流态的洞室结构
ZHOU HENG (Autor:in) / LU XI (Autor:in) / DI SHENGJIE (Autor:in) / LIU JING (Autor:in) / WANG WEIGUO (Autor:in) / WEI YONG (Autor:in) / LI YUETAO (Autor:in)
09.07.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
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