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据西德《土木工程》1978年第3期报道,目前由英国温希普技术出口有限公司提供的PSI Geo-Dri1l是一种由电动机驱动的新型岩芯钻机。这种钻机能在复杂的地带钻取岩芯。无论以何种方向钻取岩芯,它都能取出直径为25米毫,长150毫米的岩芯样品。由于
According to the West German “Civil Engineering” No. 3 of 1978 reported that at present by the British Wind Technology Export Co., Ltd. PSI Geo-Drill is a motor-driven new type of core drilling rig. This rig can drill cores in complex areas. No matter in what direction to drill the core, it can take out the core diameter of 25 meters, 150 mm long core samples. due to