摘要
通过对山寨煤矿25011综放工作面"三角煤柱区域"强矿压发生的机理和规律的研究、分析,制定出了强矿压综合防治措施。采用阶梯式回采法,缩小"三角煤柱区域"面积,实现了"三角煤柱区域"的分割,降低了强矿压的危险性;利用施工的25011回风辅巷兼做卸压巷,使"三角煤柱区域"内积聚的弹性能得到释放;对阶梯式回采形成的小三角煤柱区域,采用环绕式覆盖卸压法,实现小三角煤柱区域整体卸压,消除"三角煤柱"区域形成的高应力区;优化"三角煤柱区域"的卸压参数和巷道的补强支护参数,降低了高能级矿震事件的发生频次,减弱了强矿压的危害性。
Through the shanzhai coal mine 25011 face ＂ triangle regional coal pillar＂ strong pressure mechanism and regularity of research,analysis,to develop a strong measures for the prevention and control of rock pressure. Using stepwise stoping method,narrow area ＂ triangle regional coal pillar＂,implements the ＂ triangle regional coal pillar＂ segmentation,reduces the risk of strong pressure;Using the construction of 25011 return air auxiliary unloading lane,lane and do make ＂ triangle regional coal pillar＂ accumulated elastic energy release; To cascade extraction of small coal pillar triangle area,surround type cover unloading method,realize the small triangle area overall unloading coal pillar,eliminate the ＂ triangle＂ coal pillar area formed by the high stress area; ＂ Triangle regional coal pillar＂ pressure relief parameters optimized and roadway reinforcing supporting parameters,reduce the high level mine earthquake occurrence frequency of events,the harmfulness of weakening the strong pressure.
出处
《煤》
2016年第4期4-7,28,共5页
Coal
关键词
山寨煤矿
三角煤柱
强矿压
Shanzhai coal mine
Triangle coal pillar
Strong pressure
