The influence of the shape and size of dust fractions on their distribution and accumulation in mine workings when changing the structure of air flow

The results of the analysis statistical data on accidents at Russian mines caused by explosions in workings space have shown that methane-dust-air mixtures underground coal are most severe terms consequences. A detailed literature sources showed total number prevails share hybrid mixtures, i.e. with simultaneous participation gas (methane) and dust, as well possible or partial involvement dust. main causes contributing to occurrence development dust-air mixture explosions, including irregular monitoring mine engineers technicians schedule dust explosion protective measures; unreliable assessment situation, etc., given. problem this case was difficulty determining location volume deposition zones not extinguished difficult access for instrumental control workings. Determination class-shape particles is a necessary condition constructing model situation reflecting aerosol distribution space. morphological composition fractions dispersion less than 0.1 has been studied. Particle studies conducted using an LEICA DM 4000 optical microscope IMAGE SCOPE M software made it establish different class-shapes found operating mines. It presented samples correspond parallelepiped shape greatest extent. mathematical based specialized ANSYS FLUENT complex, which class-form incorporated, used predicting explosive combustible use obtained production conditions will allow determine places develop measures prevent transition from aerogel state thereby formation mixture.