近水平煤层条带开采实测纠偏方法适用性研究  

Applicability of Rectification Method of Subsidence on Strip Mining in Flat Seam

作　　者：赖文奇[1] 许家林[1] 

机构地区：[1]中国矿业大学矿业工程学院,江苏徐州221116

出　　处：《采矿与安全工程学报》2011年第2期273-278,共6页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(50974116);江苏高校优势学科建设工程项目;教育部博士点基金项目(20070290513)

摘　　要：为了掌握近水平煤层条带开采沉陷实测纠偏方法的适用性,分别就采出率、采宽和采深等开采条件对该方法准确性的影响进行了研究.采用UDEC离散元数值模拟软件,基于条带采区内前2个已采条带工作面各自沉陷稳定后的实测沉陷数据,通过特定的平移叠加方式预计后续若干未采条带的累积沉陷值.实验结果表明:在采出率分别为38.5%,45.5%和55.6%,采宽分别为45,60,75 m以及采深分别为400,600 m等多种开采方案中,通过该方法所得后续5个工作面沉陷预计结果与实际模拟结果基本一致.通过误差分析证明该方法具有较高准确性和较广泛的适用性.In order to obtain the applicability of rectification method of subsidence on strip mining in flat seam,the accuracy of the method affected by the factors such as recovery rate,penal width,and mining depth is studied.Using UDEC discrete element simulation software and based on the subsidence survey data obtained when the surface of each first two extracted strip panels become stable after subsidence,we predicted the subsidence value of the following un-extracted panels by a specific way of shifting and superimposing.The result shows that in the case of which the recovery rate is 38.5%,45.5% or 55.6%,the panel width is 45 m,60 m or 75 m,and the mining depth is 400 m or 600 m,the predicted subsidence curves of the following 5 un-extracted panels are generally the same as the simulated ones.The error analysis verified that the method can well and truly predict the subsidence data and be popularized to other coal mines.

关 键 词：条带开采 沉陷预计 实测纠偏 采出率 采宽 采深 

分 类 号：TD823.83[矿业工程—煤矿开采]