镇墩是设置在管道水平转角处防止管线移位的水工建筑物，通常为钢筋混凝土结构。主要适用于水电站、抽水站的出水管及供水工程的压力管，主要用来固定压力管道，防止其位移，一般建在管道转折的位置，或直线管道过长时也设镇墩。
在凤凰水电厂更新改造工程中，2、3、5、6号压力钢管的镇墩均出现不同程度的裂缝。
There are various degrees of cracks on anchorage block of No. 2, No. 3, No. 5, No. 6 penstock during in modification work of Fenghuang hydropower plant.
根据对桥梁段倒虹吸钢管及其镇墩基础的抗震分析可知，一般地震下，不必对桥梁倒虹吸钢管进行特殊处理；
According to the antidetonation analysis on the Pour siphon in bridge and associated ease base, the special treatment is generally not required.
桓仁和湖南镇两座单支墩大头坝在施工期均出现一些劈头裂缝，经工程处理后一直安全运行。
Abutment cracks appeared respectively in the construction period of Huanren and Hunanzhen single supporting pier solid-head buttress DAMS, which were treated once.
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