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首页> 美国政府科技报告 >Boring of full scale deposition holes using a novel dry blind boring method
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Boring of full scale deposition holes using a novel dry blind boring method

机译：使用新型干盲镗孔方法钻孔满刻度沉积孔

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As a part of the Finnish radioactive waste disposal research three holes (the size of deposition holes) were bored in the research tunnel at Olkiluoto in Finland. A novel full-face boring technique was used based on rotary crushing of rock and removal of crushed rock by vacuum flushing through the drill string an the purpose of the work was to demonstrate the feasibility of the technique. During the boring test procedures were carried out in order to determine the effect of charges in operating parameters on the performance of the boring machine and the quality of the hole. (refs.). (Atomindex citation 28:033468)

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