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道,使得混凝土防渗墙渗流量逐渐增大,防渗性能逐渐减弱。(5)渗流溶蚀耦合效应会导致土石坝防
              渗墙内渗流路径不断减小,水力梯度不断增大,进而引发防渗墙局部或整体水力破坏;以临界水力梯
              度作为判别标准,计算得出本文工程实例的混凝土防渗墙安全服役年限约为 42.8 a。


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