The author expounds the research and successful application of the construction technology of earth rock cofferdam seepage-proofing system without rolling compaction in deep and thick layer of the construction of Shangshipan electric navigation comprehensive control project in Jianling River, Sichuan. It provides reference and successful experience for the seepage-proofing construction of the similar earth-rock cofferdam projects.%作者讲述本人在四川嘉陵江上石盘电航综合枢纽工程施工中，对水下深厚层无碾压土石围堰防渗体系施工技术的研究与成功应用，为类似土石围堰工程防渗施工提供借鉴和成功经验。
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