某300 m级特高拱坝运行初期渗流特性分析  

Analysis of the Seepage Characteristics of a 300m Level Ultra-high Arch Dam during Its Initial Operation Period

作　　者：朱宝强 陈宇龙 韩继宗 彭浩 ZHU Baoqiang;CHEN Yulong;HAN Jizong;PENG Hao(Powerchina Guiyang Engineering Corporation,Guiyang 550081,China)

机构地区：[1]中国电建集团贵阳勘测设计研究院有限公司,贵州贵阳550081

出　　处：《水电与新能源》2024年第10期55-59,共5页Hydropower and New Energy

摘　　要：水库蓄水后改变大坝两岸山体及坝基岩体渗流场,可能引发渗透破坏甚至威胁大坝安全,因此渗流稳定是工程运行初期重点关注的问题。以西南某300 m级特高混凝土双曲拱坝为例,基于2021~2023年大坝渗流渗压监测数据,分析工程初期运行渗流特性。结果表明,坝基渗压正常,两岸无绕坝渗流,大坝渗流量远低于设计抽排能力,帷幕灌浆及防渗效果良好,坝基及两岸渗控体系运行正常。研究成果为工程运行管理提供了基础数据。After the impoundment of a reservoir,the seepage field in the mountains on both sides of the dam and the dam foundation rocks will change dramatically,which may cause seepage damages and even threats to the safety of the dam.Thus,seepage stability is a key issue in the intial operation period of the project.Taking a 300m level ultra-high concrete double-curvature arch dam in Southwest China as an example,the seepage characteristics of the project during its initial operation period are analyzed based on the seepage pressure monitoring data of the dam from 2021 to 2023.The results show that the seepage pressure of the dam foundation is normal.There is no obvious seepage around the dam on both sides.The seepage flow is much lower than the design pumping capacity.The curtain grouting and the anti-seepage effect are satisfactory,and the seepage control system of the foundation and both sides of the dam is operating normally.The study provides important basic data for the operation management of the project.

关 键 词：特高拱坝 运行初期 渗流渗压 渗控体系 

分 类 号：TV642.4[水利工程—水利水电工程]