Design and Optimization of Support for Deep Composite Roof Roadway in Engineering Practice
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.
deep mining facenumerical simulationsupport schememine pressure observation
万方数据
维普
