摘要
文章根据对厚煤层机械化放顶煤实验开采工作面长期监测所获得的地面观测资料的综合整理分析,利用数值模拟方法,绘制出了地表下沉预计曲线,并利用最后一期的实际观测结果与计算值进行拟合比较,显示二者吻合度较高。在此基础上,确立了P19点为最大下沉点,并绘制了该点下沉速度曲线,揭示了地表点的移动动态变化规律。
In this paper,based on the comprehensive arrangement and analysis of the surface observation data obtained from the long-term monitoring of mechanized top coal caving experimental mining face in thick coal seam,the prediction curve of surface subsidence is drawn by using the method of numerical simulation.The actual observation results of the last period are fitted and compared with the calculated values,which shows that the two are in good agreement with each other.On this basis,the P19 point is established as the maximum sinking point,and the sinking velocity curve of this point is drawn,which reveals the dynamic change law of the movement of the surface point.
出处
《科技创新与应用》
2021年第5期56-58,共3页
Technology Innovation and Application
基金
贵州省教育厅青年科技人才成长项目(黔教合KY字[2016]283)
贵州省科技计划项目(黔科合LH字[2017]7017号)。
关键词
开采沉陷
变形规律
监测
地表移动
mining subsidence
deformation law
monitoring
surface movement
