摘要
对于有突出危险的煤巷掘进工作面有必要确定出工作面前方的集中应力带的范围。通过对乌兰矿突出煤层掘进工作面机巷打钻及防突预测中的钻屑量实测数据的分析,确定了集中应力带的范围为掘进工作面前方5~16 m。
For coal drift heading faces in coal seams prone to outburst,it is necessary to determine the scope of stress-concentrated zones in front of the heading faces.Based on an analysis of the drilling in heading face in an outburst prone coal seam and the measured data of the quantity of drilling cuttings from outburst prevention pre-drilling carried out in Wulan Coal Mine,it is determined that the stress-concentrated zone locates about 5 ～ 16 m in advance of the heading face.
出处
《中国煤炭》
北大核心
2010年第10期51-52,55,共3页
China Coal
关键词
突出煤层
巷道掘进
掘进工作面
集中应力带
防突
钻屑量
outburst prone coal seam
drift heading
heading face
stress-concentrated zone
outburst prevention
quantity of drilling cuttings
