地下调蓄隧道系统井喷水力特性研究进展

Advances on the geysers in storage tunnel system

地下调蓄隧道系统是解决城市调蓄能力不足和防止内涝的重要防洪工程。当调蓄隧道充水尤其是快速充水时,系统内极易产生滞留气团并诱使井喷现象的发生,从而对城市管网系统、人身或财产安全和公共秩序等方面造成严重影响。井喷现象的发生与滞留气团释放过程的水气运动密切相关,该文对调蓄隧道明满流特性、滞留气团运动特性和井喷水力特性等方面的研究进展依次进行了概述,探讨了井喷流动不同研究方法的优缺点,总结了井喷的流动特征、产生机理及控制措施,指明了地下调蓄隧道系统井喷研究的前沿与发展方向。

The underground storage tunnel system is an important municipal project to enlarge the urban storage capacity and prevent urban flooding.The trapped air pockets can easily be produced in the storage tunnel system with rapid filling water,and then the geysers phenomenon may be occurred in the process of the trapped air pocket releasing,which may destroy the urban underground pipe network system,and have the severe impact for personal safety,social property,and public order etc.In this paper,the characteristic of free surface-pressure flow,the characteristic of trapped air pockets,and characteristic of geysers are described,the advantages and disadvantages of different methods for researching geysers are discussed,the flow characteristics,mechanism and control measures of geysers were summarized.The direction of future studies on the geysers in storage tunnel systems is suggested.