DYNAMICS OF PNEUMATIC-GRAVITATIONAL PERCUSSION MECHANISM FOR DEGASSING HOLE-MAKING
P. N. Tambovtsev
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Грунтовый массив, обсадка дегазационных скважин, стальные трубы, пневмоударная машина, энергия удара, расход воздуха, параметры рабочего цикла, Soil, casing of degassing holes, steel pipes, pneumatic percussion machine, blow energy, air flow rate, operating cycle parameters
Abstract
A schematic design of the pneumatic-gravitational percussion mechanism ensuring efficient driving of casing pipes in soil for degassing hole-making in coal seams, is substantiated. Using the numerical modeling method, the operating cycle dynamics of the mechanism is studied, with its rational design parameters calculated. The basic energy parameters, percussion frequency and compressed air flow depending on the compressed air pressure in the main line are determined. The comparative assessment of the weight, size and dynamic parameters of the gravitational machine and the known analogs is performed.
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