近距离煤层采动对相邻巷道围岩应力及变形影响研究  

Study on the influence of mining in close distance coal seam on surrounding rock stress and deformation of adjacent roadway

作　　者：桂兵[1] 曲延伦[1] 郭现伟[1] 杨洋[1] 秦瑞 马传永 Gui Bing;Qu Yanlun;Guo Xianwei;Yang Yang;Qin Rui;Ma Chuanyong(Yanzhou Coal Mining Co.,Ltd.,Zoucheng,Shandong 273500,China)

机构地区：[1]兖州煤业股份有限公司,山东省邹城市273500

出　　处：《中国煤炭》2019年第1期72-77,82,共7页China Coal

摘　　要：依据济三矿183上煤层和183下煤层赋存特点,结合183上06工作面、183上07工作面以及183下05工作面回采巷道的生产技术条件,采用理论分析和FLAC3D数值模拟的方法,对济三矿近距离上煤层采动对下煤层相邻巷道围岩应力及变形进行了分析研究。结果表明,受上部煤层工作面开采影响,下部煤层工作面前方产生超前支承压力,超前支承压力和侧向支承压力产生应力叠加,通过煤层底板传播到下煤层,导致下煤层回采巷道顶板最大下沉量和底鼓量增大。在水平方向上,由于水平应力较大,会对巷道产生挤压,从而使巷道两帮产生明显位移。According to the characteristics of the close distance coal seams of 183 upper and 183 lower coal seams in Jining No.3 Mine,combined with the production technological conditions of 183 upper No.6 work face,183 lower No.7 work face and183 lower No.5 work face,this paper studied surrounding stress and deformation of the adjacent laneway of lower coal seam under the influence of mining in close distance coal seam by using theoretical analysis and FLAC3 Dnumerical simulation software.The results indicated that the advanced abutment pressure generated in front of the work face,affected by upper coal seam mining.Stress superposition.The maximum of roof subsidence and floor heaves of lower seam roadway increased due to the stress superposition caused by advanced abutment pressure and lateral abutment pressure propagating to the lower coal seam through coal seam floor.The horizontal stress extruded the roadway,and two sides of the roadway generated displacement.

关 键 词：近距离煤层群 支承压力 采空区 巷道变形 

分 类 号：TD322[矿业工程—矿井建设]