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在分析用泵吸反循环钻进施工深长钻孔灌注桩时循环中断、钻速低的原因基础上，提出了提高反循环钻进效率的措施。
Based on the analysis of the causes of cyclic interruption and low drilling rate when pumping reverse circulation into deep-drilled bored piles, the measures for improving the efficiency of reverse circulation drilling were proposed.