气动冲沙技术在新沂河海口枢纽挡潮闸的应用  

Application of pneumatic anti-silting technology in the tide gates of Xinyi River estuary hub

作　　者：陈犇 丁磊[1] 丁跃[3] 杨帆[1] 杨啸宇 胡志浪 CHEN Ben;DING Lei;DING Yue;YANG Fan;YANG Xiaoyu;HU Zhilang(Nanjing Hydraulic Research Institute,Nanjing 210024,China;College of Harbor,Coastal and Offshore Engineering,Hohai University,Nanjing 210098,China;Jiangsu Huaishu Xinhe Management Office,Huai’an 223005,China)

机构地区：[1]南京水利科学研究院,江苏南京210024 [2]河海大学港口海岸与近海工程学院,江苏南京210098 [3]江苏省淮沭新河管理处,江苏淮安223005

出　　处：《江苏水利》2023年第11期8-12,共5页Jiangsu Water Resources

基　　金：国家自然科学基金(U2243241);江苏省水利科技项目(2020002,2021025);南京水利科学研究院创新团队基金(Y220013)。

摘　　要：近年来,沿海挡潮闸闸下泥沙淤积问题较为突出,传统清淤方法对受季节、现场条件等众多因素影响,清淤效果有待提高。针对新沂河海口枢纽挡潮闸闸下淤积问题,采用了气动冲沙减淤防淤技术进行现场试验研究,并进行效果评估。结果表明:排气气压和喷嘴角度是影响闸下减淤效果的重要因素,排气气压与冲沙坑体积成正相关;喷嘴角度90°适用于清淤范围小且淤积深度较深的情况;喷嘴角度45°适用于清淤范围大且淤积强度中等的情况。综合考虑防淤效果和经济成本,2 mm喷嘴孔径更适用于日常防淤工作。In recent years,the problem of sediment deposition under the coastal tidal gate is more prominent.The traditional dredging method is affected by many factors such as season and site conditions,and the dredging effect needs to be improved.Aiming at the problem of siltation under the tide gates of Xinyi River estuary hub,the pneumatic anti-silting and silt reduction technology was used to carry out field test research and evaluate the effect.The results show that the exhaust gas pressure and nozzle angle are important factors affecting the effect of sediment reduction under the gate,and the exhaust gas pressure is positively correlated with the volume of the scour hole.The nozzle angle of 90°is suitable for the case of small dredging range and deep siltation depth.The nozzle angle of 45°is suitable for the case of large dredging range and medium siltation intensity.Considering the anti-silting effect and economic cost,2mm nozzle aperture is more suitable for daily anti-silting work.

关 键 词：气动冲沙技术 海口枢纽挡潮闸 泥沙淤积 防淤减淤 

分 类 号：TV15[水利工程—水力学及河流动力学]