Abstract: By application of drainage by pipe in construction of earth rock cofferdam with clay core wall, dry construction environment was created for excavation of cutoff trench. It enhanced the quality of the filling and rolling of clay core wall, worthy popularization.

Key words: clay core wall, earth rock cofferdam, drainage by pipe

摘要：

粘土心墙土石围堰，采用导管排水能够使心墙截水槽开挖在干地施工，提高了粘土心墙填筑、碾压的质量，为小河流粘土心墙围堰施工提供了一种经济有效的施工方法。

关键词: 粘土心墙, 土石围堰, 导管排水