滑移顶梁放顶煤采煤法

Sublevel Daving Mining Method by Using Powered Support with Sliding Roof Beam

叙述了该采煤法工作面参数的确定、回采工艺过程及技术经济指标分析等。

A trial of a horizontal slicing sublevel caving mining method by using powered support with sliding roof beam has been made in an inclined seam with 50-60°and with an average thickness of 10 m in Wangjiashan Mine, Qingyuan Coal Mine Administration. Good results have been achieved from the trial. In the three month trial, 24288 t of coal have been mined out. The average month production was 8096 t, OMS was 5.997 t and the coal recovery was 78.86%. The open face length averaged 10.96 m, the cutting height was 2 m and caving height was 8 m. This paper has made detailed descriptions on geological conditions of the trial face, determination of the face data, selection of the equipment. mining technique, labour organization, mine pressure observation in the trial face, measures of fire dextinguishing and the analyses of the technical and economic efficiency.