摘要
由FLAC3D建模将上区段采煤工作面分段开挖,研究开挖过程中"锚网喷"支护的巷道应力、位移的变化情况。由模拟结果可知随着工作面开挖,塑性破坏区增大,垂直位移急剧增加,工作面和巷道靠近煤壁处应力集中较明显,特别是巷道左上角和帮部应力集中现象最为严重。针对以上情况,需对巷道采取补强支护和开槽卸压等措施。
Modeling with FLAC3 D,the section on coalface segments of excavation, analysis roadway stress and displacement,using 'spray anchor net' supporting method after step-by-step excavation process.The simulation results show the plastic zone increases, vertical displacement a sharp increase in working face and tunnel near the coal wall stress concentration is obvious, especially in the upper left corner of roadway and help stress concentration phenomenon is most serious. According to the above situation, roadway need reinforcing supporting and slot pressure relief and other measures.
出处
《煤炭技术》
CAS
北大核心
2015年第7期95-98,共4页
Coal Technology
关键词
上区段采煤工作面
回采
巷道围岩
mining face in section
mining
surrounding rock of roadway
