School of Energy,Xi'an University of Science and Technology MOE Key Lab of Mining and Disaster Prevention and
Control in Western Mine,Xi'an University of Science and Technology School of Engineering Technology,Hulunbuir
University

为了解黄土层对开采沉陷规律的影响,结合彬长矿区厚黄土层的采矿地质条件,基于分层传递理论,采用分阶段求解的方法,对地表沉陷的概率积分公式进行了修正,从土层对基岩的加载角度给出了厚黄土的定义。以大佛寺煤矿的地层条件为模型,通过物理材料相似模拟和FLAC3D数值模拟的方法,得到了彬长矿区的矿井开采地表移动的主要参数,并利用分阶段求解的方法,计算了该矿区亭南煤矿的地表移动等参数,利用地表移动参数设计了亭南煤矿建筑物群下宽条带开采的方案。结果表明:采用地表沉陷分段求解的方法预测厚黄土覆盖层地表沉陷是有效的。

In order to have an influence law of loess to mining subsidence,combination with mining and geological conditions of thick loess stratum in Bingchang Minin g Area,based on a slicing transmission theory,a stage solution method was applied to the correction on probability integral formula of surface ground subsidence. From a |o ading view of soil stratum to a base rock,a definition of thick loess was provided. Based on geological condition of Dafosi Mine as a model,a physical material similar simul ation and FLAC3 Dnumerical simulation method were applied to have main parameters of surface ground movement caused by the mining in Bingchang Mining Area. The s tage solution method was applied to calculate the related parameters of surface ground movement in the miming area. The surface ground movement parameters were app lied to design a strip mining plan under surface building group of Tingnan Mine. The result showed that the stage solution method of the surface ground subsidence was an effective method to predict the surface ground subsidence of the thick loess.

国家自然科学基金资助项目(40472104,40572155)；陕西省重点实验室科研计划资助项目(13JS066)；科技部社会公益研究基金资助项目(2002BIB30079,2005DIB2J179)；教育部重点实验室资助项目(2010JS020)；教育部高等学校博士学科点专项科研基金资助项目(20106121110003)；