Xiangtan Q‐Type Automatic Hydraulic Flap Gate
Publication: Journal of Irrigation and Drainage Engineering
Volume 116, Issue 2
Abstract
The automatic operation of Xiangtan Q‐type gate is based on hydraulic pressure only. As the upstream water rises above the top of gate, the gate opens automatically to safeguard the banks against flood. As the water level drops below the normal water level, the gate begins to close for retaining water. Hence it allows unmanned operation and requires neither lifter nor electric power supply. Q‐type gate is different from the conventional automatic hydraulic gates. There is no floating body as balancing weight. The gate arm is a simple rectangular plate turning along the surface of bearing that is also a simple elliptical plate made of common steel. Owing to simplicity in structure, the cost of work is lower and skillful maintenance is unnecessary. Q‐type gate can operate in free out flow or in submerged flow. Its discharge coefficient is analogous too, even larger than that of broad crest weir and its capacity to remove flood debris is better. Since 1980, a group of Q‐type gates have been installed on weirs and have operated safely for 5–8 years without any damage. In this paper the functions of Q‐type gate and the design of its key parts will be introduced.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Jiong, L. G. (1981). “The initial research of hydraulic automatic flap gate with curve hinged bearing and experiments.” Xiangtan's water conservancy, Water Resour. and Hydropower Bureau of Xiangtan City, 1–23 (in Chinese).
2.
Zhen, R. G. (1986). “Principle of operation of hydraulic automatic gate with curve hinged bearing and calculations of the bearing curve.” Hunan's conservancy, Water Resour. and Hydropower Dept. of Hunan Province, 13–15 (in Chinese).
3.
Hua, W. W., and Han, Y. X. (1986). Model tests on Ql‐hinged hydraulic automatic flap gate. Nanking Water Conservancy Res. Inst. 1–5 (in Chinese).
Information & Authors
Information
Published In
Copyright
Copyright © 1990 ASCE.
History
Published online: Mar 1, 1990
Published in print: Mar 1990
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.