采矿与安全工程学报Issue(1)：102-108,7.DOI:10.13545/j.cnki.jmse.2016.01.016
近距离煤层开采对卸压区采场围岩应力演化过程研究
Mining affect of close distance coal seam to surrounding rock stress evolution of coal face in distressed zone
摘要
Abstract
To study stress evolution characteristics of surrounding rock in mining process of close dis-tance coal seams, according to the geological and mining conditions of 762 working face of No.8 coal seam and 962 working face of No.9 coal seam in Haizi coal mine, Huaibei mining group, three-dimensional numerical model was established to study the interaction of surrounding rock stress between the mining operation of 762 and 962 working faces. The results show that floor relief stress of 762 working face exhibits a nearly linear decrease, and forms relief zone in the headgate of 962 working face. The length shortening of 762 working face reduces the distressing effect to 962 working face, and the floor lateral concentration stress of 762 working face and the abutment pressure of 962 working face are superimposed. The pulse numbers of electromagnetic radiation monitored in gateways verifies the mining stress evolution of surrounding rock.关键词
近距离煤层/采动应力演化/电磁辐射Key words
close distance coal seam/mining-induced stress development/electromagnetic emission分类
矿业与冶金引用本文复制引用
刘增辉,娄嵩,孟祥瑞,高召宁..近距离煤层开采对卸压区采场围岩应力演化过程研究[J].采矿与安全工程学报,2016,(1):102-108,7.基金项目
国家自然科学基金项目(51174005)；国家自然科学基金委员会与神华集团有限公司联合项目(51174255)；高等学校博士学科点专项科研基金项目新教师类(20123415120006)；高校优秀青年人才支持计划重点项目(gxyqZD2016085)；安徽高校省级自然科学研究重点项目(KJ2013Z293)；安徽省博士后研究人员科研活动经费项目(DG082) （51174005）
