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深冰芯钻探(Deep Ice Sheet Coring,DISC)钻机是美国冰芯钻探服务中心(ICDS)开发研制的一款机电钻机,设计取芯直径122mm,钻取深度4 000m.该系统由两部分组成,包括机械钻进系统和地面支撑系统.其中,机械钻进系统由钻机、电缆、钻塔和绞车四部分组成,钻机是该系统的钻探部分,由6个不同部件(刀盘、芯管、筛管、电机/水泵、钻机控制板和顶端)组成;地面支撑系统包括电源、控制系统、冰芯处理系统、钻井液处理系统、筛管清洗系统、辅助设备以及安全设备设施.2006年夏季ICDS在格陵兰Summit营地对该套钻机系统进行了成功试验,2011年12月31日在西南极冰原(WAIS Divide)成功获取3 405m深度的冰芯.实践证明,该套钻机能够满足目前钻探项目的科学需求.但是,在西南极冰原主冰孔不同深度钻取同深度副冰孔冰芯的过程中,钻刀无法在主冰孔壁上侧向钻取新的冰芯孔,未能如期获取复制的冰芯样品.
The Deep Ice Sheet Coring (DISC) drill is an electromechanical drilling machine developed by the American Ice Core Drilling Service (ICDS) and is designed with a core diameter of 122mm and drilling depth of 4,000m.The system consists of two parts, Including the mechanical drilling system and the ground support system, in which the mechanical drilling system consists of four parts: the drilling rig, the electric cable, the drilling tower and the winch. The drilling machine is the drilling part of the system and is composed of 6 different components (cutterhead, core tube, Pipe, motor / pump, rig control board and top); ground support system including power supply, control system, ice core processing system, drilling fluid treatment system, screen cleaning system, auxiliary equipment and safety equipment and facilities. The rig rig at Greenland successfully tested the rig system and successfully acquired 3 405m ice cores in the WAIS Divide on December 31, 2011. Practice has proved that the rig is capable of meeting the scientific needs of current drilling programs However, during the drilling of the ice core with the same depth at different depths of the main ice hole in the West Antarctic Ice Plane, the drill can not drill laterally to the ice wall of the main ice hole to obtain the new ice core hole, failing to obtain the expected Made of ice core samples.