倒虹吸水力特性研究进展

Research Progress on Hydraulic Characteristics of Inverted Siphon

倒虹吸是一种工程量小、施工方便、造价成本低的交叉输水建筑物,在我国输水工程中有广泛的应用。通过查阅国内外倒虹吸水力特性研究资料,介绍了倒虹吸的基本构造和布置形式,同时分析了倒虹吸水力特性的研究意义,并根据倒虹吸水力特性的不同研究方法对国内外学者的研究成果展开了分析。大量研究表明:倒虹吸的基本水流流态和水头损失的计算方法在大型倒虹吸研究中存在部分局限性,复杂条件下倒虹吸的水力特性仍需要深入研究;现有研究中大流量倒虹吸水力特性成果十分有限,未来该方面的研究将会是重点;目前多研究方法互相验证是研究倒虹吸复杂条件下水力特性的主要手段之一;已建成倒虹吸的维护与修缮技术也需要关注。在满足工程实况需求与学科发展需要的前提下,可以认为未来倒虹吸的研究将主要集中于复杂条件下大流量倒虹吸研究和倒虹吸与计算机多学科交叉研究,以期为后续倒虹吸水力特性的研究提供一定的借鉴。

Inverted siphon is a cross-water transmission building with small engineering volume,convenient construction and low cost,which is widely used in China's water transmission projects.By referring to the research data of hydraulic characteristics of inverted siphon at home and abroad,this paper introduces the basic structure and layout of inverted siphon,analyzes the research significance of hydraulic characteristics of inverted siphon,and describes the research results of scholars at home and abroad according to different research methods of hydraulic characteristics of inverted siphon.A large number of studies show that the calculation method of basic flow patterns and head loss of inverted siphon has some limitations in the study of large-scale inverted siphons,and the hydraulic characteristics of inverted siphons under complex conditions still need to be studied in depth.The existing research on the characteristics of large-flow inverted siphon hydrodynamic characteristics is very limited,and future research in this area will be the focus.At present,mutual verification of multiple research methods is one of the main means to study the hydraulic characteristics of inverted siphon under complex conditions.The maintenance and repair technology of the completed inverted siphon also needs attention.Under the premise of meeting the actual needs of engineering and the development needs of the discipline,it is believed that the future research of reverse siphon will mainly focus on the research of large flow reverse siphon under complex conditions and the interdisciplinary research of reverse siphon and computer,in order to provide some reference for the subsequent research of hydraulic characteristics of reverse siphon.