Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Front contraction stepped energy dissipater suitable for V-shaped river valley
The invention discloses a front contraction stepped energy dissipater suitable for a V-shaped river valley. The energy dissipater comprises a gradual contraction step section connected with a water outlet of the V-shaped river valley and an equal-width step drainage section connected with a water outlet of the gradual contraction step section, and parameters of each step in the gradual contraction step section and the equal-width step section are equal. According to the energy dissipater, the topographic condition of the V-shaped river valley with the top wider than the bottom can be fully utilized, the excavated volume is limited, a structural form is simple, and construction is convenient; through the structural form with the top wider than the narrow, the upstream water passing width is increased, a turbulent boundary layer rapidly develops to a free liquid level to form self-aeration, and a flow state is stable; and the problems that a traditional stepped energy dissipater is prone to cavitation erosion and insufficient in energy dissipation rate under the large unit width flow (q is larger than or equal to 60 m <2>/s) are solved, the problem that a traditional stepped spillway faces cavitation erosion damage under the large unit width flow can be effectively solved, and the requirements of engineering in the aspects of energy dissipation and safety are met.
本发明公开了一种适用于V型河谷的前置收缩阶梯消能工，包括与V型河谷出水口相接的渐缩阶梯段、与渐缩阶梯段出水口相接的等宽度的阶梯泄流段，渐缩阶梯段与等宽阶梯段中每个阶梯的参数均相同。本发明可以充分利用V型河谷上宽下窄的地形条件，开挖量有限，结构形式简单，施工方便；通过上宽下窄的结构形式，提高上游过水宽度，让紊流边界层迅速发展到自由液面形成自掺气，且流态稳定；本发明克服了传统阶梯消能工在大单宽流量下(q≥60m2/s)易空蚀及消能率不足等问题，可有效解决大单宽流量下，传统阶梯溢洪道面临空化空蚀破坏的问题，满足工程在消能及安全方面的需要。
Front contraction stepped energy dissipater suitable for V-shaped river valley
The invention discloses a front contraction stepped energy dissipater suitable for a V-shaped river valley. The energy dissipater comprises a gradual contraction step section connected with a water outlet of the V-shaped river valley and an equal-width step drainage section connected with a water outlet of the gradual contraction step section, and parameters of each step in the gradual contraction step section and the equal-width step section are equal. According to the energy dissipater, the topographic condition of the V-shaped river valley with the top wider than the bottom can be fully utilized, the excavated volume is limited, a structural form is simple, and construction is convenient; through the structural form with the top wider than the narrow, the upstream water passing width is increased, a turbulent boundary layer rapidly develops to a free liquid level to form self-aeration, and a flow state is stable; and the problems that a traditional stepped energy dissipater is prone to cavitation erosion and insufficient in energy dissipation rate under the large unit width flow (q is larger than or equal to 60 m <2>/s) are solved, the problem that a traditional stepped spillway faces cavitation erosion damage under the large unit width flow can be effectively solved, and the requirements of engineering in the aspects of energy dissipation and safety are met.
本发明公开了一种适用于V型河谷的前置收缩阶梯消能工，包括与V型河谷出水口相接的渐缩阶梯段、与渐缩阶梯段出水口相接的等宽度的阶梯泄流段，渐缩阶梯段与等宽阶梯段中每个阶梯的参数均相同。本发明可以充分利用V型河谷上宽下窄的地形条件，开挖量有限，结构形式简单，施工方便；通过上宽下窄的结构形式，提高上游过水宽度，让紊流边界层迅速发展到自由液面形成自掺气，且流态稳定；本发明克服了传统阶梯消能工在大单宽流量下(q≥60m2/s)易空蚀及消能率不足等问题，可有效解决大单宽流量下，传统阶梯溢洪道面临空化空蚀破坏的问题，满足工程在消能及安全方面的需要。
Front contraction stepped energy dissipater suitable for V-shaped river valley
一种适用于V型河谷的前置收缩阶梯消能工
KONG LIANG (Autor:in) / HE JIA (Autor:in) / WU WEIWEI (Autor:in) / WU JIANHUA (Autor:in) / MA FEI (Autor:in)
06.08.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
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