摘要
为评价采用复合土工膜防渗土石坝的防渗效果,以某水库复合土工膜土石坝工程为例,建立了该土石坝的三维有限元模型,并基于分析确定的土工膜当量渗流系数取值,开展了该复合土工膜土石坝的渗流仿真分析。计算结果表明:复合土工膜防渗土石坝坝体渗流量为9.46×10-7m3/s·m,坝基渗流量为1.71×10-4m3/s·m,渗流出口比降0.1224,允许比降为0.10~0.20。计算发现复合土工膜具有良好的防渗效果,验证了该土石坝采用复合土工膜防渗的合理性,可为类似复合土工膜防渗土石坝工程提供借鉴。
In order to evaluate the seepage prevention effect of the composite geomembrane anti seepage earth rock dam,a three-dimensional finite element model of the earth rock dam was established with the composite geomembrane earth dam project of a reservoir as an example,and the seepage simulation analysis of the composite geomembrane earth rock dam was carried out on the basis of the analysis and determination of the equivalent seepage coefficient of the geomembrane. The calculation results show that the seepage flow of the composite geomembrane impervious earth dam is 9.46 ×10^-7 m^3/s·m,the seepage flow of the dam foundation is 1.71 ×10^-4 m^3/s·m,the ratio of seepage flow to the seepage flow is 0.1224,and the al lowable ratio is reduced to 0.10-0.20. It is found that the composite geomembrane has good anti-seepage effect. It is proved that the application of composite geomembrane to prevent seepage is reasonable,which can be used for reference for similar composite geomembrane anti seepage earth dam engineering.
作者
刘炳明
张庆波
王海青
LIU Bing-ming;ZHANG Qing-bo;WANG Hai-qing(Chengtou Town Water Management Service Station of Ganyu County,Lianyungan;Wate Conservancy Bureau of Ganyu County,Lianyungan;Mechatronic Irrigation and Drainage Management Station of Ganyu County,Lianyungan)
出处
《水科学与工程技术》
2018年第5期64-66,共3页
Water Sciences and Engineering Technology
关键词
防渗土工膜
土石坝
当量渗流系数
渗流仿真分析
impermeable geomembrane
earth rock dam
equivalent seepage coefficient
seepage simulation analysis
