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结合乌鲁瓦提工程，对采用天然砂砾石料作为面板坝的垫层料的适用性，主要是渗透特性进行了试验研究通过试验，主要讨论了以下几个问题：①细料级配对渗透稳定的影响；③细料流失后垫层的变形。
According to the project of Uluwatti, the applicability of natural sand and gravel as the bedding material of the panel dam is studied, and the infiltration characteristics are mainly studied through experiments. The following issues are mainly discussed: ① The fine graded material is stable to infiltration Impact; ③ loss of fine material cushion deformation.