陕西煤炭2026，Vol.45Issue(10)：16-23,8.DOI:10.20120/j.cnki.issn.1671-749x.2026.1003
准东二矿高强度开采覆岩离层发育特征的数值模拟研究
Numerical simulation on development characteristics of overburden separation in high-intensity mining of Zhundong No.2 Mine
彭宝山 1张琪 1康鹏程 1于功江 1李岚 1张云松 1程聚豪2
作者信息
- 1. 国网能源新疆准东煤电有限公司,新疆 昌吉 831800||中煤科工集团北京华宇工程有限公司,北京 100120||中煤地生态环境科技有限公司,北京 100070
- 2. 中国矿业大学 能源与矿业学院,北京 100083
- 折叠
摘要
Abstract
To investigate the development laws of separation space from initiation,development to compaction,the 1101 working face of Zhundong No.2 Mine was taken as the research object.Based on the composite beam theory,the potential horizons where separation may develop were predicted,and the development characteristics of overburden separation under large mining depth and fully mechanized top-coal caving conditions were studied using the discrete element numerical simulation software UDEC.The results show that the development horizon of separation is proportional to the advancing distance of the working face,and the separation develops from lower to higher horizons as the face advances.Simulation results reveal that distinct closed"cavity"separations appear beneath key stratum 1 and the primary key stratum.The low-level separation beneath key stratum 1 has a short development cycle;during the process from fracture initiation to development,the underlying strata break and collapse,preventing the formation of a closed"cavity"separation.In contrast,the separation beneath the primary key stratum exhibits a longer development cycle.As the working face advances,the composite structure formed by key stratum 1 and key stratum 2 settles,generating separation fractures beneath the primary key stratum.These fractures continue to develop during the subsidence of the lower strata until the primary key stratum begins to bend and subside,at which point the separation development rate slows down.When the subsidence velocity of the primary key stratum exceeds that of the strata below the separation,the separation space starts to be compressed and is ultimately compacted.关键词
离层发育过程/覆岩运移规律/地表下沉/离层空间/离层发育层位Key words
separation development process/overburden migration law/surface subsidence/separation space/separation development horizon分类
矿业与冶金引用本文复制引用
彭宝山,张琪,康鹏程,于功江,李岚,张云松,程聚豪..准东二矿高强度开采覆岩离层发育特征的数值模拟研究[J].陕西煤炭,2026,45(10):16-23,8.
