Research on the safe and efficient mining technology of goaf without coal pillars in Shendong mining area
In recent years,the Shendong mining area has actively responded to industry development trends and is committed to studying and promoting the coal pillar free mining technology.It has successively tested and applied various innovative methods such as flexible form work concrete wall gob-side entry retaining technology,top cutting pressure relief to form self roadway technology,and goaf pre placed concrete wall excavation technology.The article introduces the current research status of gob-side entry retaining in Shendong mining area,elaborates the characteristics of existing gob-side entry retaining technology in Shendong mining area,and proposes the main problems and measures in the research and application of gob-side entry retaining in Shendong mining area.Finally,the economic benefits of the existing pillar free mining technology in Shendong mining area are analyzed.
mining without coal pillarsgob-side entry retainingflexible formwork concrete walltechnical and economic benefitsShendong mining area
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