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小口径捞渣器在断层和破碎带中进行小口径金刚石钻进,常常发生坍塌掉块和超径现象,由此引起钻具振动,加剧岩心破碎和堵塞,造成钻头崩刃,卡簧破碎等事故,同时也造成孔内岩屑、粉粒和金属碎片等的堆积.为保证孔内清洁,以往多使用喷反捞渣管来清理碎渣,但由于内部的兜粉器容积小,又难以保证沉淀物自卡,因而效果不好.用永磁打捞器打捞金属碎屑,又由于较重的金属碎片多沉落在岩粉的下面而难以奏效.
Small diameter slag traps in the fault and broken belt for small-caliber diamond drilling, often collapse collapsed block and phenomenon of ultra-diameter, which led to vibration drilling, exacerbating the core broken and blocked, resulting in bit collapse edge, broken snap spring Accident, but also caused holes in the cuttings, silt and metal debris, etc. In order to ensure the hole clean, the past use spray back slag pipe to clean up debris, but because of the internal volume of small powder, but also difficult To ensure the sediment from the card, so the effect is not good.Using permanent magnetic salvage salvage metal scrap, but also because of heavy metal fragments sinking more in the rock powder below and difficult to work.