下伏煤层开采采煤工作面矿压观测数据分析

Analysis of the Observation Data of the Mining Face Pressure in the Underlying Coal Seam

为解决岳城矿1308工作面遗留煤柱影响大、巷道支护设计依据不充分等问题,对工作面和超前支护段进行了矿压观测,得出上层遗留煤柱的确切位置位于切眼80~130m、170~240m处,超前支护段应力集中区域位于13082巷超前支护9m处,并建议通过超前注浆来提高围岩整体塑性。

In view of the large influence of coal pillars left behind in the 1308 working face of Yuecheng Coal Mine and the lack of key design for roadway maintenance,the mine pressure observation was carried out on the working face and in the advance support section.It was concluded that the exact location of the upper coal pillars was 80~130 meters and 170~240 meters in the cut hole,and the stress concentration area of the advance support section was 9 meters in the advance support section of the 13082 roadway.Combining with the measured data,it is suggested that advance grouting be used to improve the overall plasticity of surrounding rock,which provides a theoretical basis for formulating the reinforcement scheme of working face.