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根据支承压力理论与相似模拟实验对石圪台矿2-2煤层开采工作面的支承压力影响范围和支承压力峰值点位置进行预测与研究。研究表明:工作面超前支承应力峰值点距煤壁约3 m,超前支承应力影响范围约为25 m;顶板初次来压步距为32.0 m,周期来压步距为10.5 m,与现场实测数据较吻合。
Based on the supporting pressure theory and similar simulation experiments, the influence range of support pressure and the location of peak pressure of support pressure in Shuitai Mine 2-2 coal seam mining face are predicted and studied. The results show that the peak stress point ahead of working face is about 3 m away from the coal wall and the influence range of leading bearing stress is about 25 m. The initial pressure step of roof is 32.0 m and the pressure step pitch is 10.5 m. More consistent.