Determination of tension of friction of piston of dispersible material is in a pipeline
National research Tomsk polytechnic university, 634050 Tomsk, Russia
a Corresponding author: firstname.lastname@example.org
Estimates of the piston friction stress of particulate material in the pipe by mechanical action of the plunger. The material is compacted to form the roof and moves as a whole. The ranges of the coefficients of lateral pressure and coulomb friction.
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