上解放层开采对综放工作面回采巷道稳定性的影响分析  

The Influence Analysis of Upper Liberation Layer Mining on Roadway Stability of Fully Mechanized Caving Face

作　　者：舒凑先 朱权洁[1] 魏全德[1] 张敏哲[1] 许恩进 黄锦坤[3] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]西北有色地质勘查局七一三总队,陕西商洛726000 [3]宝钢集团上海梅山矿业有限公司,江苏南京210041

出　　处：《煤矿安全》2014年第1期192-195,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51174016;51204010;50774012)

摘　　要：采用UDEC模拟开采上解放层条件下综放工作面回采对巷道稳定性的影响。通过分析被解放层垂直应力及巷道表面位移,得出:开采解放层后,被解放层煤体垂直应力分布可划分为原岩应力、应力升高、应力降低和应力恢复4个区,开采上解放层条件下,被解放层开采对巷道的超前影响距离明显降低,数值模拟结果和现场实测结果一致。The numerical sinmlation software UDEC is used to simulate the effect of upper liberation layer mining on roadway stability of fully mechanized caving face. According to the analysis of the vertical stress of liberated layer and the surface displacement of the tunnel, this paper got conclusions that the vertical stress of coal on the liberated layer can be divided into four areas, initial stress area, stress - increased area, stress - decreased area and stress recovery area after mining the liberation layer, besides, the effected of liber- ation layer mining on roadway decreases effectively. And the results are in good agreement with the field measurements.

关 键 词：解放层 巷道稳定性 数值模拟 表面位移 垂直应力 

分 类 号：TD322.4[矿业工程—矿井建设]