Research and Application of Small Coal Pillar Mining Technology in Coal Mines in Southern Shanxi Region
Small coal pillar mining technology can effectively reduce the width of section coal pillars,improve the resource recovery rate of mining areas,and extend the service life of mines to a certain extent.It has gradually become the preferred promotion technology for many mines on the brink of resource depletion in Shanxi Province.The article takes 7 coal mines,including Fuda,Weizi Town,and Shitong,of Changzhi Company of Jinneng Holding Group as the research background.By analyzing the mining geological conditions and combining theoretical analysis results,optimization plans for coal pillars in each coal mine section are obtained.Based on different conditions of each mine,research on the process parameters of small coal pillar roadway top cutting and pressure relief is carried out according to local conditions.Finally,based on the observation and analysis of the stability of the surrounding rock of the small coal pillar roadway,the small coal pillar roadway protection technology adopted by each coal mine has achieved the expected effect,and the width of the coal pillar has been effectively reduced,achieving significant results and economic and social benefits,accumulating valuable experience for the large-scale promotion of this technology.
resource recovery ratesmall coal pillar roadway protectioncutting the top to relieve pressuretunnel stability
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维普
