平四矿近距煤层上行开采研究  

Study of Ascending Mining of Short-Range-Seams in Pingdingshan No.4 Coal Mine

作　　者：马立强[1] 汪理全[1] 乔京利[2] 王少义 

机构地区：[1]中国矿业大学矿业工程学院,煤炭资源与安全开采国家重点实验室,江苏徐州221008 [2]岱庄生建煤矿,山东微山277606 [3]七五生建煤矿,山东微山277605

出　　处：《采矿与安全工程学报》2008年第3期357-360,共4页Journal of Mining & Safety Engineering

基　　金：教育部新世纪优秀人才支持计划资助项目(NCET-05-0480);江苏省普通高校研究生科研创新计划项目;中国矿业大学科研基金项目(2005B002);煤炭资源与安全开采国家重点实验室开放基金项目(07KF09)

摘　　要：在对煤层赋存条件进行分析的基础上,根据平四矿己16煤层的采动覆岩裂隙发育规律,阐释了近距煤层上行开采机理,分析了上行开采可行性的判别准则.采用数值计算软件UDEC,分别建立了煤层开采走向和倾向模型,计算并分析了己16煤开挖后不同层位覆岩的变形状况及其影响范围.模拟结果表明,先采己16煤后,己15煤的倾斜值即其台阶下沉量比较小,未超过煤厚之半(750 mm),除工作面两端头对应区域外,煤层表现的很连续.同时表明,下煤层的开采对上煤层的破坏程度在走向方向上比在倾斜方向上大.模拟结果与工程实践情况相符,并经两工作面应用,证明上行开采是可行的,并采用国产设备成功解决了上煤层的薄煤层综合机械化开采.Based on the coal-preserving structure and the development regularities of mining induced fractures, the traditional judgments of ascending mining of short-range-seams and the mechanism of ascending mining was expatiated. The numerical software UDEC was used to build the horizontal model as well as the inclined model to analyze the overlying strata deformation and its affecting scale of different horizons. Numerical simulation results show that, after No. 16 coal seam has been mined, the subsidence of the No. 15 coal seam does not reach 750 mm, half of its thickness. Except the area corresponding to the face end of the No. 16 long wall coalface, the No. 15 coal seam keeps a continuous appearance, showing that the failure of the upper coal seam in advancing direction is more serious than the inclined direction after the lower coal seam is mined. The engineering practice of the two coalfaces well agrees with the numerical simulation result. So the ascending mining is feasible, which means that the domestic fully mechanized equipments can be used to exploit the upper thin coal seam.

关 键 词：近距煤层 上行开采 可行性 数值模拟 

分 类 号：TD325[矿业工程—矿井建设]