Optimization and Application on Pressure Balanced Ventilation System of Easy Combustion Fully Mechanized Coal Mining Face
Abstract：According to the contradiction between the pressure balanced ventilation system and the transportation system during the late mining period and the equipment removing period existed in the pressure balanced ventilation system of easy combustion fully mechanized coal mining face in Majiliang Mine, With the local optimization and improvement, a paraUel operation could be conducted and was applied to No. 8509 easy combustion coal mining face in No. 305 mining block of No. 14-3 seam. The results showed that after the ventilation sys- tem optimized and improved, the income ventilation of No. 8509 coal mining face increased from the previous 680 m^3/min to 800 m^3/min, the air retuning increased from the previous 278 m^3/min to 790 m^3/min and the pressure releasing and air leakage was highly reduced. The CO volume fraction in the upper corner and the air returning gateway reduced from 192×10^-6 to 0. The equipment removing work of the coal mining face was completed with 18 days only.
Keywords：easy combustion fully mechanized coal mining facepressure balanced ventilation systemtransportation systemparalleloperation
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 42-44,75 )