| 摘要: |
| 电厂排水口水域底床的稳定是电厂排水基础结构安全的保障,通过排水口水域局部动床冲刷以及排水口防护块体稳定模型试验,研究后石电厂排水海域泥沙冲刷及其防护块体稳定问题.排水口冲刷试验结果表明,不同水位下2个排水口满负荷排水时,排水口区域会出现冲坑、冲沟,排水明渠隔堤堤头外50 m左右海床范围内为严重冲刷区,最大相对冲深可达9.0 m.防护块体稳定试验结果表明,满负荷排水流量条件下,在排水口水域采用一定粒径组合的抛石防护工程措施,块石可以达到稳定状态.最终得出的优化方案为:在排水明渠口外50 m范围内采用直径40cm左右的块石防护,50～100m范围内采用直径为20cm左右的块石防护. |
| 关键词: 排水口 冲刷形态 防护措施 正态模型 |
| DOI： |
| 分类号:TV653 |
| 基金项目: |
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| Scour of the outfall and protection stones stability of Houshi Power Plant |
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ZHANG Lei,XU Xiao
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ZHANG Lei,XU Xiao(Nanjing Hydraulic Research Institute,Nanjing 210029,China)
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| Abstract: |
| The stability of outfall sea-bed bottom is the guarantee of the power plant drainage infrastructure security.By model tests,we study the problems of mobile-bed scour and protection stones stability of Houshi Power Plant.The test results show that when the two outfalls are operating at full load,scour pools and gullies appear in outfall areas,and serious erosion will appear in the area 50 m away from the head of the dyke of the open drainage channel with a maximum scour depth of 9.0 m.The stability research ... |
| Key words: outfall erosion patterns protection measure undistorted model |
