南欧江复合土工膜面板堆石坝渗流分析
|
摘要
渗流会影响坝体稳定性,对大坝渗流监测资料进行研究和评价对研究坝体的稳定性十分重要。该文通过对南欧江水电站大坝坝基扬压力、坝体渗流量、绕坝渗流分析表明,大坝防渗效果显著,帷幕后渗压水位明显下降,坝体和坝基总渗流量逐年减小,大坝防渗性能提高。对坝基扬压力进行回归分析,结果表明,大坝扬压水位主要受上游水位、时效作用的影响。
The seepage will affect the stability of dam. It is very important to study the dam stability by studying and evaluating the seepage monitoring data. In this paper,through analysing the uplift pressure of the dam foundation,the seepage flow of dam and the seepage around dam of Namou River Hydropower Station,the seepage prevention effect of the dam is remarkable,the seepage pressure level decreases obviously after curtain grouting,the total seepage flux of dam and dam foundation decreases year by year,and the dam impervious performance is improved. The regression analysis of dam foundation uplift pressure shows that the uplift pressure level of the dam is mainly affected by the effect of upstream water level and aging effect.
The seepage will affect the stability of dam. It is very important to study the dam stability by studying and evaluating the seepage monitoring data. In this paper,through analysing the uplift pressure of the dam foundation,the seepage flow of dam and the seepage around dam of Namou River Hydropower Station,the seepage prevention effect of the dam is remarkable,the seepage pressure level decreases obviously after curtain grouting,the total seepage flux of dam and dam foundation decreases year by year,and the dam impervious performance is improved. The regression analysis of dam foundation uplift pressure shows that the uplift pressure level of the dam is mainly affected by the effect of upstream water level and aging effect.
引文
[1]吴世勇,高鹏.二滩拱坝安全监测资料分析.水力发电学报,2009,28(4):108~113
[2]金秋,陈新杰.棉花滩大坝扬压力综合分析.人民黄河,2010,32(3):114~117
[3]余朝庄,吕敬清.棉花滩水电站大坝工程地质条件与评价.水力发电学报,2001(7):19~21
[4]毛小青,梁通,刘瑞宁.盘道水库浆砌石坝坝基扬压力分析.人民黄河,2010,32(5):109~111
[5]高澜.刘家峡坝基实测扬压力的特点及原因分析.人民黄河,1988,10(3):49~53
[6]彭正权,施玉群.万家水电站土石坝坝体渗流特性分析.水电与新能源,2017,153(3):64~67
[7]张强勇,林春金,向文.石板水电站重力坝坝基渗流渗压观测资料的统计回归分析.岩土力学,2006,27(10):1831~1834
[8]杨永超,李东辉.回归分析模型在大坝变形监测中应用.地理空间信息,2011,9(6):136~138
[9]陶丛丛,陈宏伟,孙松,等.基于原型监测的黏土心墙堆石坝渗流研究.长江科学院院报,2017,34(9):70~73,78
[2]金秋,陈新杰.棉花滩大坝扬压力综合分析.人民黄河,2010,32(3):114~117
[3]余朝庄,吕敬清.棉花滩水电站大坝工程地质条件与评价.水力发电学报,2001(7):19~21
[4]毛小青,梁通,刘瑞宁.盘道水库浆砌石坝坝基扬压力分析.人民黄河,2010,32(5):109~111
[5]高澜.刘家峡坝基实测扬压力的特点及原因分析.人民黄河,1988,10(3):49~53
[6]彭正权,施玉群.万家水电站土石坝坝体渗流特性分析.水电与新能源,2017,153(3):64~67
[7]张强勇,林春金,向文.石板水电站重力坝坝基渗流渗压观测资料的统计回归分析.岩土力学,2006,27(10):1831~1834
[8]杨永超,李东辉.回归分析模型在大坝变形监测中应用.地理空间信息,2011,9(6):136~138
[9]陶丛丛,陈宏伟,孙松,等.基于原型监测的黏土心墙堆石坝渗流研究.长江科学院院报,2017,34(9):70~73,78