摘要
为了揭示重复采动条件下地表沉陷变形规律,凤凰山煤矿在154309工作面上方建立了地表移动观测站。通过对岩移观测资料的分析研究,给出了重复开采时地表沉降曲线,获得了该地质采矿条件下地表移动变形预计参数和岩移角值,探讨了重复采动条件下地表移动变形特征。研究认为,重复采动条件下地表沉陷变形剧烈,下沉盆地陡峭,变形分布集中,地表下沉系数大,采动影响范围大。地表动态变形剧烈,下沉速度快,最大下沉速度为143.4mm/d,地表移动持续时间较短,活跃期约占地表移动持续时间的30.7%,其下沉量占地表总沉降量的96.3%。
In order to obtain surface subsidence and deformation rule under repeated mining condition, surface movement observation station was set up over 154309 mining face in Fenghuangshan Colliery. Surface subsidence curve was present and prediction parameters and strata movement angle were obtained under the geological and mining condition. Surface movement characteristic of repeated mining was discussed. Results showed strong surface subsidence, steep subsidence basin, concentrated deformation, large subsidence coeffi- cient and influence range. Maximum subsidence velocity reached 143.4mm/d. Surface movement duration time was short, active period occupied 30. 7% of surface movement duration time, the subsidence in active period was 96. 3% of total subsidence.
出处
《煤矿开采》
北大核心
2014年第2期88-90,94,共4页
Coal Mining Technology
基金
国家自然科学基金资助项目(41301598)
关键词
重复采动
地表移动变形
沉陷
岩移参数
repeated mining
surface movement and deformation
subsidence
strata movement parameter
