Research on Applicability of End and Advanced Area Supports in Remining Working Face
Aiming at the problem of serious impact of mining dynamic pressure on the end position of the 3115 remining working face and the roof in the advanced support area,the applicability analysis method of the selection of end support form and advanced support form is conducted to study the control effect of the roof.It is proposed that in order to ensure the safety of the end position and the roof in the advanced support area,it is necessary to strengthen support.The results show that using end and advanced supports instead of single hydraulic pillar to support the roof can greatly improve the strength of end and advanced support,and improve the safety and reliability of roof support.The roof of the remining working face is relatively broken,and the coal body bearing strength is low.Adopting steel shed support form for its crossheading can reduce the cross-section of the roadway,reduce the overhanging area of the roadway roof,and increase stability.Through preliminary type selection of supports,the suitable end and advanced support forms for the roof in the 3115 remining working face end position and advanced support area are determined.
国家科技期刊平台
NSTL
万方数据
