导流洞出口布置形式及消能方式试验研究  

Layout and Energy Dissipation Mode at the Outlet of Diversion Tunnel

作　　者：翟静静[1] 杨伟[1] 毛三保[1] 

机构地区：[1]长江科学院水力学研究所,湖北宜昌443002

出　　处：《长江科学院院报》2012年第10期86-90,共5页Journal of Changjiang River Scientific Research Institute

摘　　要：以淋溪河施工导流模型为依托,重点研究导流洞出口布置形式及出口消能形式对下游冲刷、下游沿岸流速流态及涌浪的影响。由于淋溪河导流洞出口布置位置的特殊性,试验尝试了不同的布置方式及多种出口消能形式。试验结果表明:导流洞出口加设侧导墙可有效地阻止主流对导流洞出口水流的压迫,防止水流集中,有利于水流的扩散;加设消力墩可使水流横向、纵向、垂向得到充分的扩散,达到消能的目的,有效地减小水流对下游河道的冲刷,降低下游河道的流速及水位壅高高度。Based on the model of Linxi River diversion project, the authors investigated the effect of layout and en- ergy dissipation mode at the outlet of diversion tunnel on the scour, flow velocity, flow pattern and wave surge in the downstream. We designed different layouts and dissipation modes in the tests. Test results showed that adding guidewall on the side of diversion tunnel outlet could effectively prevent the oppress of main stream on the flow at outlet, and prevent the flow from concentration, which is conducive to flow diffusion. Adding baffle pier at the out- let of diversion tunnel could diffuse the flow in lateral, longitudinal, and vertical directions, thereby reducing the backwater height and the erosion and flow velocity in the downstream.

关 键 词：施工导流 消力墩 侧导墙 下游冲刷 沿岸流速 

分 类 号：TV551.1[水利工程—水利水电工程]