山东煤炭科技2025，Vol.43Issue(4)：122-127,6.DOI:10.3969/j.issn.1005-2801.2025.04.025
无采动影响下实体煤工作面回采期间不断顶可行性研究
Feasibility Study on Non-broken Roof During Stoping Period of Solid Coal Working Face Without Mining Influence
李如朋 1张慧田1
作者信息
- 1. 内蒙古昊盛煤业有限公司,内蒙古 鄂尔多斯 017000
- 折叠
摘要
Abstract
For working faces with a burial depth exceeding 400 m,a coal seam thickness greater than 2.5 m,and a hard and thick roof occurs above the coal seam,blasting should be carried out to break the roof before stoping.In view of the fact that there is solid coal around the two roadways during the stoping period of the 1219 working face of Shilawusu Coal Mine,and there is no mining excavation plan in a short time.In order to achieve an efficient coal production mode in the coal mine,the non-broken roof scheme of the 1219 working face is demonstrated.According to the energy criterion,using the stress superposition method and numerical simulation analysis,the maximum superposition stress of the dynamic and static load on the 1219 working face is about 47.78 MPa,which not yet reaches the minimum stress required for the occurrence of rock burst.The results show that after adopting the non-broken roof scheme,the rock strata within the range of 100 m above the coal seam are able to enter a plastic state and generate breakage in a timely manner,and there has no occurence of large-scale roof hanging situation.The deformation of the overlying rock strata within the mining influence range is coordinated and consistent,which is conducive to the prevention and control of rock burst and mine pressure management,and provides reference for the non-broken roof scheme of working face stoping under similar conditions.关键词
断顶/实体煤/回采Key words
broken roof/solid coal/stoping分类
矿山工程引用本文复制引用
李如朋,张慧田..无采动影响下实体煤工作面回采期间不断顶可行性研究[J].山东煤炭科技,2025,43(4):122-127,6.
