通过理论分析和数值计算, 在考虑坝体与防渗墙的相对渗透系数关系的基础上, 提出了估算心墙坝坝体浸润 线的一种简化计算方法, 给出了浸润线位置的拟合公式。以白鸭山水库大坝为例, 将该简化方法与有限元法的计算 结果进行对比, 表明该简化方法合理、可行。这一简化计算方法可大大减少中小型水库大坝在进行除险加固方案比 选时的计算工作量。

The satur atio n line position is o ne of the main bases for flow char acter istics evaluation o f ear th r ock dams, w hich must be calculated before the compar ing and select ing the appropr iate anti2seepage reinfo rcement pro gr am o f danger ous earth2r ock dam. Co nsider ing the relatio nship betw een the r elativ e permeabilit y coefficient o f the dam and the cut2o ff wall, a simplified cal2 culat ion method w as pro po sed t o estimate the satur ation line of the cor e dam by theor etical ana lysis and numer ical ca lculatio n. A fitting formulatio n was dev elo ped to calculate the po sition o f the satur ation lines. The simplified calculation methods pr ov ed to be r easonable when compar ing w ith the r esults o f finite element methods based o n the dam of Baiyashan Reser voir. The simpli2 f ied calculat ion method can signif icantly r educe the computational w orkload when com par ing and selecting t he r einfo rcement prog ram o f sma ll and medium2sized r eser vo ir dams.

国家自然科学基金( 51179062)