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本文针对当前在工程地质勘察中多采用小口径钻孔进行压水试验的特点,分析了在用公式存在的问题,并建立了φ50钻杆压水水头损失计算公式。
This paper aims at the characteristics of using small-diameter boreholes for water pressure tests in the current engineering geological survey, analyzes the problems existing in the use of formulas, and establishes the calculation formula for the pressure head loss of φ50 drill pipe.