两硬煤层综采工作面采场矿压规律实测研究

Actual Law Research on the Mining Pressure around Longwall Face in Fully Mechanized Coal Mining Face in "Two-hard" Coal Seam

以大同煤业燕子山矿8913"两硬"综采工作面为研究对象,通过现场实测掌握了该工作面顶板来压特点和支架载荷变化规律,并通过宏观观测掌握了该工作面煤壁片帮和支架活柱下缩量情况,该研究对于指导该工作面开采提供了实测依据。

Taking 8913 ＂two-hard＂ fully mechanized coal mining face in Yanzishan Coal Mine in Datong Coal Industry as study object, roof support load characteristic and change rule of support load in the working face by field measurement were obtained in this paper, rib spalling of this working face and the drop-off situation of support column were obtained by macroscopical prediction, which provided measurement basis for working face mining.