摘要
通过对地表岩移观测资料的分析研究,获得了厚黄土层薄基岩综放开采条件下岩移参数和岩移角值,揭示了该地质采矿条件下地表移动变形的一般规律和特点。研究认为厚黄土层薄基岩综放开采条件下,地表移动变形在时间上和空间上更为集中,采空区上方地表下沉值大,煤层上方下沉值明显较小,地表下沉系数大,水平移动系数偏小,地表下沉速度快,地表沉降活跃期短,但活跃期的累计下沉量占总沉降量的比重高。
By analyzing and studying the survey data,obtain different kinds of prediction parameters and angle parameters with full-mechanized caving mining in thin bedrock with thick loess,reveal the general rules and characteristics of ground subsidence under the condition of the geological and mining.The research thought that the deformation values are more concentrated in both space and time,the amount of ground subsidence are larger above the working surface,the displacement factor are smaller outside the working surface.the subsiding velocity faster,and the active stage of surface movement is shorter,but the amount of ground subsidence accounts for a higher proportion of total ground subsidence.
出处
《煤炭技术》
CAS
北大核心
2014年第4期132-134,共3页
Coal Technology
关键词
厚黄土层
薄基岩
综放开采
沉陷变形
thick loess layer
thin bedrock
full-mechanized caving mining
surface subsidence
