
管涌作为一种土石坝典型破坏形式,其演化过程中与渗流、温度息息相关。基于饱和-非饱和稳定渗流理论、VG模型及Lu模型,构建了土石坝管涌演化的数值模拟框架并与现有管涌演化模型对比并验证可行性。在此基础上,模拟了管涌演化过程中的渗压分布与饱和度变化,揭示了渗流场的演化特征。此外,温度场模拟表明,温度变化与管涌通道长度演化趋势相似,呈先缓慢增加后加速上升,最终在管涌通道贯通时发生突变。研究成果揭示了渗流场和温度场在土石坝管涌演化中的耦合效应,为管涌灾害的监测与预警提供了科学依据。
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