煤炭与化工2025，Vol.48Issue(7)：22-25,4.DOI:10.19286/j.cnki.cci.2025.07.005
南关煤业1207工作面过断层预裂爆破弱化技术研究与应用
Research and application of pre-splitting blasting weakening technology for 1207 working face crossing fault in Nanguan Coal Industry
樊彦武1
作者信息
- 1. 山西汾西矿业集团南关煤业有限责任公司,山西晋中 031307
- 折叠
摘要
Abstract
There is a large fault in No.2 coal seam of Nanguan Coal Industry,which makes it difficult to advance during the working face passing through the fault hard rock,and the shearer picks are seriously worn.In view of this situation,the pre-splitting blasting technology is proposed to weaken the fault hard rock.By means of theoretical analysis and numerical simulation,the reasonable diameter of blasting hole is determined to be 75 mm and the spacing is 1.4 m.According to the occurrence of faults,the inclination angle of blasting hole is determined to be 50 °,and the field test is carried out in 1207 working face.The test results show that after blasting weakening of fault hard rock,the daily loss of shearer picks is reduced by 30,the daily average footage is increased by 0.8 m,and the effect of pre-splitting blasting weakening is good.关键词
断层硬岩/预裂爆破/爆破孔直径/爆破孔间距Key words
fault hard rock/pre-splitting blasting/blasting hole diameter/blasting hole spacing分类
矿业与冶金引用本文复制引用
樊彦武..南关煤业1207工作面过断层预裂爆破弱化技术研究与应用[J].煤炭与化工,2025,48(7):22-25,4.
