A deep ice core was drilled at Dome A, Antarctic Plateau, East Antarctica, which started with the installation of a casing in January 2012 and reached 800.8 m in January 2017. To date, a total of 337 successful ice-core drilling runs have been conducted, including 118 runs to drill the pilot hole. The total drilling time was 52 days, of which eight days were required for drilling down and reaming the pilot hole, and 44 days for deep ice coring. The average penetration depths of individual runs were 1 and 3.1 m for the pilot hole drilling and deep ice coring, respectively. The quality of the ice cores was imperfect in the brittle zone (650−800 m). Some of the troubles encountered are discussed for reference, such as armoured cable knotting, screws falling into the hole bottom, and damaged parts, among others.

中文翻译：

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在南极洲东部的 Dome A 进行 800 米深的冰芯钻探

2012年1月在南极高原Dome A钻探深冰芯，2012年1月安装套管，2017年1月达到800.8m。迄今为止，已成功进行337次冰芯钻探。进行，包括 118 次运行以钻取导向孔。总钻进时间为52天，其中8天用于钻下和扩孔导向孔，44天用于深冰取芯。导孔钻孔和深冰取芯的单个运行的平均穿透深度分别为 1 和 3.1 m。脆性区（650-800 m）的冰芯质量不完善。遇到的一些问题，如铠装电缆打结、螺丝落入孔底、零件损坏等问题，进行讨论以供参考。