摘要
为研究新疆克孜尔水库除险加固后主坝的渗流情况,运用数理统计方法对主坝渗流监测资料进行了过程线分析、水平渗透坡降分析、相关性分析、位势及测压管水位滞后时间分析。研究结果表明:(1)主坝渗流量较小,心墙防渗效果较好;(2)下游无渗透明流,无积水,无异常变形,渗流状况基本稳定,大坝运行工况基本正常;(3)0+252监测断面下游位势略微偏高,判断该断面心墙与坝基的帷幕灌浆局部风化或排水花管排水不畅,应引起重视。
In order to analyze the seepage condition of Keerzi Reservoir main dam after rehabilitation,a series of analyses were carried out by using seepage monitoring data and mathematical statistics,including hydrograph analysis,horizontal seepage gradient analysis,correlation analysis,water level potential and lag time of water level in piezometer tube.The results showed that:① there is slight seepage flow detected in the main dam and the core wall is effective in anti-seepage;② there are no signs of open current,water logging,or abnormal deformation in downstream,indicating that the seepage is stable and the dam operates normally;③ water level potential at the downstream of 0+252 cross-section is slightly higher and it’s probably due to the local weathering of the grout curtain built in the core wall and dam foundation,or the poor drainage of the water release pipe.These problems should be given more attention.
作者
杨顺刚
YANG Shungang(Xinjiang Administration of Keerzi Reservoir,Baicheng 842313,China)
出处
《水利水电快报》
2020年第8期32-37,共6页
Express Water Resources & Hydropower Information
关键词
大坝渗流
测压管
过程线分析
相关性分析
克孜尔水库
新疆维吾尔自治区
main dam seepage
piezometer tube
hydrograph analysis
correlation analysis
Keerzi Reservoir
Xinjiang Uygur Autonomous Region
