| 青草沙水库排水闸加大泄量后的消能防冲研究 |
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| 引用本文： | 丁星星,谢东. 青草沙水库排水闸加大泄量后的消能防冲研究[J]. 水利水电技术, 2013, 44(12): 51 |
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| 作者姓名： | 丁星星 谢东 |
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| 作者单位： | (1.河海大学水利水电学院,江苏南京210098；2.上海友为工程设计有限公司，上海200333) |
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| 摘 要： | 青草沙排水闸增大泄量到300 m3/s时下游将发生远驱水跃，现有消力池需要采取相应的加固措施。经水力计算和水槽试验，建议采用海漫段定点抛投四面体的海漫加糙方式，四面体棱长1 m，呈梅花状布置，顺水流和垂直水流方向，中心点间距与棱长之比2∶1，共布置5排，其壅水效果与稳定性均可满足要求。
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| 关 键 词： | 青草沙排水闸 消能防冲 海漫加糙 |
| 收稿时间： | 2012-09-10 |
Research on energy dissipation and erosion control of Qingcaosha Sluice after discharge increase |
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| DING Xingxing,XIE Dong. Research on energy dissipation and erosion control of Qingcaosha Sluice after discharge increase[J]. Water Resources and Hydropower Engineering, 2013, 44(12): 51 |
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| Authors: | DING Xingxing XIE Dong |
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| Affiliation: | （1.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing210098, China;2. Shanghai Youwei Engineering Design Co., Ltd., Shanghai200333,China） |
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| Abstract: | The repelled downstream hydraulic jump will occur, if the discharge released from Qingcaosha Sluice increases to 300 m3/s, and then the corresponding reinforcement measures must be adopted for the existing stilling basin. Through the hydraulic calculation and laboratory flume experiment concerned, it is suggested to place concrete tetrahedrons at the fixed-points for roughening the apron section therein. The edge-length of the concrete tetrahedron is 1 m and they are arranged with the quincuncial layout along or across the flow direction; of which the ratio of the span between the center and the edge length is 2∶1 and five rows are arranged. In this way, both the backwater effect and the stability can finally meet the relevant requirement. |
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| Keywords: | Qingcaosha Sluice energy dissipation and erosion control apron roughness improvement |
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