末采期相邻采区间煤柱对泄水巷应力影响研究  

Study on Influence of Coal Pillar between Adjacent Mining Area on Stress of Water Drainage Roadway during End-mining

作　　者：万广绪 戴洪泰 于秀慧 Wan Guangxu;Dai Hongtai;Yu Xiuhui(Etuokeqian Banner Changcheng No.3 Mining Industry Co.,Ltd.,Ordos,Inner Mongolia 016299;School of Resources,Shandong University of Science and Technology,Tai’an,Shandong 271019)

机构地区：[1]鄂托克前旗长城三号矿业有限公司,内蒙古鄂尔多斯016299 [2]山东科技大学资源学院,山东泰安271019

出　　处：《江西煤炭科技》2024年第1期7-10,共4页Jiangxi Coal Science & Technology

摘　　要：基于长城三矿两相邻采区开采为研究背景,采用FLAC^(3D)数值模拟方法,对工作面末采期间两采区间留设煤柱与相邻巷道内应力分布规律进行探讨;研究表明,工作面末采阶段,受超前与侧向支承压力影响,两采区留设煤柱及附近泄水巷道应力集中程度高,应力集中系数可达1.89,易积聚大量的弹性应变能,具备较明显的矿压显现与冲击地压危险性;应强化末采阶段工作面与煤柱应力与冲击地压危险性的监测,若发现异常矿压显现或冲击地压危险,应及时采取有效的卸压解围措施。The paper probes into the coal pillar setting between two mining areas and stress distribution law in adjacent roadway during end-mining by FLAC~(3D) numerical simulation at working face of Changcheng No.3 Colliery,whose research results show that high stress concentration coefficient up to 1.89 occurs in coal pillar setting between two mining areas and adjacent water drainage roadway due to the influence of advanced and side abutment pressure with large amount of elastic strain energy and obvious strata behavior and rock burst;effective pressure relief measures should be carried out based on the monitoring of pillar stress and rock burst hazards during end-mining at working face.

关 键 词：工作面末采 煤柱 应力集中 冲击地压 卸压解围 

分 类 号：TD822.3[矿业工程—煤矿开采] TD322[矿业工程—矿山开采]