Study On The Comprehensive Mechanized Mining Face Dust Migration Of Jinchuan

In full-mechanized excavation is to yield a large workplace dust, dust concentrations exceeded the national health standard for several or even dozens of times, greatly threaten the personnel's health and safety.Unclear of the dust movement rule, led to the current dust control measures and facilities cannot meet actual needs.Study on migration of dust in fully mechanized excavation face, point to develop effective dust control measures are of great practical significance.Papers on 1100 face is studied in jinchuan mine, on the determination of dust particle dispersion experiments were done.Dust dust does not occur near the source of the highest value, but rather in the airflow direction.According to gas solid two-phase stream theory, on fully dug roadway for has Fluent numerical simulation, can came dust in airflow of role down movement, constantly of settlement, from face more far, dust concentration more small, came has fully dug surface dust stream field of changes law, dust from within outside proliferation, in back airflow of effects down, in into airflow of into wind direction up inside dust concentration comparison high, and dust concentration is by left to right, from low to up gradually declined of trend. To simulate the results of dust control measures, validates long short of feasibility of dust suppression measures.Papers in longshou mine dust prevention and dust-removal system of fully mechanize driving faces choices provides a theoretical basis, for integrated mine dust is of great theoretical significance and practical value.