Determination of Length of Horizontal Pneumatic Transport Line in Drilling Machine for Mud Removal by Negative Pressure
B. B. DANILOV, B. N. SMOLYANITSKY
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
Keywords: бурение, скважина, трубопровод, транспортирование, грунтовая порция, перепад давления, drilling, drillhole, pipeline, transport, soil batch, pressure differential
Abstract
Under discussion is soil transport by negative pressure generated in horizontal rotating pipeline. Based on the relations between soil batch velocity, soil batch mass and diameter of the pipeline, the authors have developed procedure to determine the limit pipeline length. The rotary velocity of the pipeline is related with its diameter. Reliability of the proposed procedure results is experimentally proved.
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