Study on Rational Layout of Main Removing Gateway for High Cutting Height Long Coal Mining Face
Abstract：In order to set up the rational location of the main removing gateway for No. 4301 high cutting height long coal mining face in Sihe Mine and to reduce the coal pillar lost, with the study on the pilot support pressure distribution law of the coal mining face, the rational coal pillar width was discussed. Thus the location of the main removal gateway could be determined. The site observation and numerical simulation combined method was applied to study the distribution law of the pilot support pressure in the coal mining face. The study showed that at the final mining stage of the coal minming face, the peak location of the pilot support pressure in the coal mining face was kept with 8 - 10 m in front of the coal mining face, the influence scope was about 50 m and the serious influence scope was about 20 m. The rational width set for the coal pillar shall be 35 - 45 m. The main removing gateway should be located at 35 - 45 m of the centralized roadway in the mining block. Not only pledged the stability of removal gateway, but also reduced the loses of coal resources.
Keywords：high cutting heightlong coal mining facepilot support pressuremain removing gateway
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( 6-8,13 )