近距离煤层开采覆岩垮落与裂隙演化规律数值模拟研究  

Numerical simulation research on the law of overlying strata caving and fracture evolution in close-distance coal seam mining

作　　者：徐鹏宇 XU Pengyu(Shanxi Shouyang Luyang Xiangsheng Coal Industry Co.,Ltd.,Shouyang 045400,China)

机构地区：[1]山西寿阳潞阳祥升煤业有限公司,山西寿阳045400

出　　处：《晋控科学技术》2025年第2期1-4,共4页Jinneng Holding Science and Technology

摘　　要：为保障近距离煤层群高瓦斯矿井安全高效开采,结合山西寿阳潞阳祥升煤矿3#煤和6#煤工程背景,采用PFC数值模拟软件,模拟3#煤层、6#煤层开采覆岩的垮落和裂隙变化情况。结果表明,3#煤层工作面垮落带高度为10.4 m,裂隙带高度为41.5 m;6#煤层工作面垮落带高度为14.7 m,裂隙带高度为56.7 m。6#煤层开采过程中,采空区上覆岩层将发生直接破断并延伸至上部煤层的采空区内,从而引发3#煤层裂隙带的二次发育。In order to ensure the safe and efficient mining of high-gas mines in close-distance coal seams,combined with the engineering background of No.3 coal seam and No.6 coal seam in Xiangsheng Coal Mine,the numerical simulation software PFC was used to simulate the caving and fracture changes of overlying strata during the mining of No.3 coal seam and No.6 coal seam.The results show that the height of caving zone and fracture zone in No.3 coal seam face is 10.4 m and 41.5 m respectively.The height of caving zone and fracture zone in No.6 coal seam face is 14.7 m and 56.7 m respectively.In the mining process of No.6 coal seam,the overlying strata in the goaf will directly break into the goaf of the upper coal seam,which leads to the secondary development of the fracture zone of No.3 coal seam.

关 键 词：近距离煤层 垮落带 裂隙 数值模拟 

分 类 号：TD325[矿业工程—矿井建设]