大宁煤矿大巷保护煤柱留设宽度研究  

Research on the Width of Protective Coal Pillars Left in the Main Roadway of Daning Coal Mine

作　　者：史敬田 Shi Jingtian(Shanxi Yamei Daning Energy Co.,Ltd.,Yangcheng Shanxi 048114,China)

机构地区：[1]山西亚美大宁能源有限公司,山西阳城048114

出　　处：《山西冶金》2024年第11期142-146,共5页Shanxi Metallurgy

摘　　要：为了确定大宁煤矿六采区南部大巷保护煤柱的合理留设宽度,以大宁煤矿实际地质条件为工程背景,基于“三下”开采规范和弹塑性极限平衡理论探讨大巷保护煤柱的理论留设宽度,并采用数值模拟软件对不同宽度保护煤柱进行巷道围岩裂隙分布特征和应力分布特征分析。研究表明:六采区南部大巷煤巷和岩巷的保护煤柱宽度分别不少于30 m和34 m时,在工作面回采过程中大巷具有较好的稳定性,能够保证工作面安全高效推进。In order to determine the reasonable retention width of protective coal pillars in the southern roadway of the sixth mining area of Daning Coal Mine,based on the actual geological conditions of Daning Coal Mine,this paper explores the theoretical retention width of protective coal pillars in the roadway based on the"three underground"mining specifications and elastic-plastic limit equilibrium theory.Numerical simulation software is used to analyze the distribution characteristics of rock fractures and stress distribution of protective coal pillars with different widths in the roadway.Research has shown that when the width of the protective coal pillars in the coal roadway and rock roadway of the southern part of the sixth mining area is not less than 30 m and 34 m respectively,the roadway has good stability during the mining process of the working face,which can ensure the safe and efficient advancement of the working face.

关 键 词：煤矿 大巷 保护煤柱宽度 数值模拟 

分 类 号：TD263[矿业工程—矿井建设]