In order to ensure the stability of mine composite roof roadway in coal mining,the track crossheading of 1692(1)working face in Pansan Mine is taken as the research object.Based on the analysis of the occurrence of the original surrounding rock and the original support scheme,the original support scheme can temporarily meet the needs of safety support.However,considering that the roadway is a typical composite roof gob-side entry driving under multiple stress disturbances in the deep,the prestressed bearing structure of anchor rod and short anchor cable is analyzed by numerical simulation.It is found that the stress field range of short anchor cable prestressed bearing structure is larger,which can effectively control the deformation of surrounding rock.
关键词
深部工作面/数值模拟/支护方案/矿压观测
Key words
deep mining face/numerical simulation/support scheme/mine pressure observation
维普
万方数据