中文摘要：

为了研究综采工作面推进速度对顶板岩层活动的影响规律，以神东矿区上湾煤矿煤层赋存条件及开采参数为研究背景，运用FLAC3D模拟软件，对工作面不同推进速度条件下顶板岩层的应力场、塑性破坏区以及位移场进行了数值模拟；并提取了监测单元的应力值，分析了不同推进速度时顶板岩层的活动情况。结果表明，当推进速度由12 m／d减小为3 m／d时，煤壁处工作面中部顶板岩层的垂直应力由8.85 M Pa 增加到9.63 M Pa ，煤壁前10 m 处由17.27 M Pa 增加到20.02 M Pa ；顶板岩层的最大破坏高度由7.53 m 增大到12.61 m ；顶板岩层的最大下沉量也增加19％；推进速度的减小导致顶板岩层活动频繁，煤层顶板稳定性降低。此研究结果为采场顶板的科学控制和管理提供了理论依据。

英文摘要：

In order to investigate the influence law of mining velocity on the roof strata at a fully mechanized mining face , taking the occurrence conditions and mining parameters of coal seam of Shendong mining area Shangwan Coal Mine as research background ,the numerical simu‐lation calculation of coal face at different mining velocity was conducted on stress field ,plastic failure zone and displacement field of roof strata by FLAC 3D simulation software ,the stress value of monitoring unit was extracted and the activity condition of roof strata at different velocity was analyzed .The results show that when the mining velocity reduced from 12 m/d to 3 m/d ,the ver‐tical stress of roof strata on coal wall in the middle of working face increased from 8.85 MPa to 9.63 MPa ,the value at pre‐wall 10 m increased from 17.27 MPa to 20.02 MPa;the maximum damage height of roof strata increased from 7.53 m to 12.61 m ;the maximum squat increased by 19% .T he decreases of mining velocity make the roof strata move frequently and the stability of coal seam roof reduce .These results provide theory basis for scientific control and safe mining of stope roof .