综放工作面过上方横纵古空巷研究

Study on Fully-mechanized Mining Face Passing Upper Criss-cross Old Goaf

以韩家洼矿为工程背景,分析综放工作面过上方横纵古空巷的推进安全措施。该工程具有回采工艺为放顶煤开采,煤层厚度的增加导致矿压管理难度增加;工作面上方废旧工作面与现回采工作面层间距较小,过古空巷危险系数增加;上方巷道纵横交错,且影响范围较大,项目难度增加等难点。研究结果可为类似条件下的残煤复采提供借鉴。

Taking Hanjiawa Mine as the engineering background,the paper studies the safety measures when fully-mechanized mining face passing upper criss-cross old goaf. The project is top coal caving,so the mine pressure management is harder with the increase of the thickness of the coal seam. The smaller the distance between the upper old goaf and the caving face is,the bigger danger coefficient is when passing the old goaf. The upper goaf is criss-cross with a big influencing range,which makes the project more difficult. The research results could be helpful for the mining of residual coal in the similar conditions.