本文以大广高速公路深州至大名段项目工程为依托,介绍了渗透排水技术在下挖通道排水系统中的研究及应用情况。该排水技术方案的提出解决了目前在华北平原地区高速公路建设采用低路堤设计方案中存在的制约性难题,为低路基高速公路在平原区的发展起到了推动作用。渗透排水技术通过在大广高速的应用,产生了巨大的经济、社会、环保效益,对类似工程建设具有示范作用。 Based on the project of Shenzhou-Dameng section of Daguang Expressway, this paper introduces the research and application of the technology of seepage drainage in under-drainage channel. The proposed drainage scheme solves the current restrictive problems in low-embankment design of expressway construction in the North China Plain, and plays a catalytic role in the development of low-subgrade expressway in the plain area. Through the application of Daguang Expressway, Drainage and Drainage Technology has produced enormous economic, social and environmental benefits, demonstrating its role in similar projects.