新疆某水库工程溢洪洞水工模型试验成果与分析  

Results and Analysis of Hydraulic Model Test for Spillway Tunnel of a Reservoir Project in Xinjiang

作　　者：刘水辉 LIU Shui-hui(XPCC Surveying&Designing Institute(Group)Co.,Ltd.,Urumqi 830000 China)

机构地区：[1]新疆兵团勘测设计院(集团)有限责任公司,新疆乌鲁木齐830000

出　　处：《云南水力发电》2023年第6期57-61,共5页Yunnan Water Power

摘　　要：通过室内水工模型试验,观测溢洪洞泄流能力、水流流态、流速和水流冲刷等特性,分析设计方案的合理性。试验结果表明:溢洪洞孔口尺寸基本满足设计要求;溢洪洞单独运行、闸门开度为5.08 m时,库区水面比较平静,溢洪洞进口前出现不贯通的表面漩涡,漩涡对溢洪洞的进流情况不会产生影响;不同工况下,溢洪洞各部位水流空化数在0.54~1.06,且洞身各断面平均流速均小于30 m/s,洞身段可以不设掺气槽。试验结果为工程的安全建设和运行提供理论依据。Through indoor hydraulic model tests,this article observed the characteristics of the discharge capacity,flow pattern,flow velocity,and water erosion of the spillway tunnel,and analyzed the rationality of the design scheme.The test results indicate that the size of the spillway tunnel orifice basically meets the design requirements.When the spillway tunnel operates alone and the gate opening is 5.08m,the water surface in the reservoir area is relatively calm.There are discontinuous surface vortices in front of the entrance of the spillway tunnel,which will not affect the inflow of the spillway tunnel.Under different working conditions,the cavitation number of water flow in various parts of the spillway tunnel ranges from 0.54 to 1.06,and the average flow velocity of each section of the tunnel body is less than 30m/s.The tunnel body section may not be equipped with an aeration tank.The experimental results provide a theoretical basis for the safe construction and operation of the project.

关 键 词：溢洪洞 模型试验 出口体型 水流流态 河道冲刷 

分 类 号：TV131.61[水利工程—水力学及河流动力学]