河道排水倒虹吸进口布置试验研究和设计原则

采用资料收集分析和水工概化模型试验联合研究的技术路线,系统地研究了单沟直入、单沟斜入、单沟侧入、双沟Y型汇流、双沟直侧入和三沟直斜入等6种进流方式的进口体型布置,在此基础上提出了设计原则,可供相关工程设计参考。单沟直入、单沟斜入和单沟侧入进口布置是3种基本体型,对于双沟或三沟归并的复杂汇流条件,应根据各沟来流交汇叠加后的主流方向,进而选择适当的体型来平顺衔接水流。大流量漫滩洪水时进口两侧可能出现的间歇性吸气漩涡,可采用将胸墙向上游倾斜的方式予以消减。

Test Study and Design Principle for Intake Layout of River Inverted Siphon

It systemically studied 6 kinds of intake layout types, including vertical inflow by single channel, oblique inflow by single channel, side inflow by single channel, Y type inflow by double channel, vertical and side inflow by double channel, and vertical and oblique inflow by three channel, with the integrated research method of both data collection and generalization model test. And the design principle is put forward. The vertical inflow by single channel,oblique inflow by single channel,and side inflow by single channel are 3 basic inflow types. For the other 3 com-plex confluence types,suitable shape should be selected to smoothly connecting water considering the main stream direction after inflow conflu-ence. Both sides of intake maybe occur intermittent inspiration vortex with high flow flood in floodplain. It can be subtracted by means of incli-ning the breast wall to the upstream.