Analysis of Ventilation Network and Ventilation at Heading Faces

摘要

The term of "ventilation network analysis" meantthe calculation of airflow distribution in a ventilation network,that is the calculation of airflow rate through each roadway in amine formerly. However, nowadays the meaning has expandedto mine fire simulation, thermal environment analysis in a mine,detection of abnormal roadways, optimization of network, etc.This paper describes these analyses first.The heading face is one of the most important places to beventilated in a mine. There are still some problems remained tobe analyzed about the ventilation of heading faces, especially,for the discharge of flammable gases and control of respirabledust. The latter part of the paper describes the result of analysisabout the beading face ventilation using an actual size modelroadway, small-scaled model roadways and computational fluid dynamics.