煤矿安全2019，Vol.50Issue(1)：79-83,5.DOI:10.13347/j.cnki.mkaq.2019.01.019
动静载压架机理及综合爆破防治技术
Mechanism of Dynamic and Static Load Support Crushing and Comprehensive Blasting Prevention Technique
邵红旗1
作者信息
- 1. 中煤科工集团西安研究院有限公司,陕西 西安 710077
- 折叠
摘要
Abstract
In order to prevent the roof cutting and support crushing disaster which is easy to occur in shallow-buried and short-range coal seams mining in Shenfu Mining Area, by the means of survey, theoretical analysis, simulation experiment and field measurement, the mechanism of dynamic and static load support crushing and one blasting prevention technique are proposed. The result found that coupling of static load caused by residual coal pillar and the dynamic load stress caused by broken and destabilized overlying strata above the coal pillars led to the failure of coal pillars and passed the impact dynamic load and sheared the stratum between seams and caused roof cutting and support crushing disaster. Combined the prevention and control approach, one kind of blasting coal pillar and its direct roof control technology are proposed, which not only releases concentrated load but also absorbs dynamic load, this technique has been verified by crushing disaster prevention projects at three working face of one coal mine in Shenmu.关键词
集中煤柱/静载应力/动载应力/压架灾害/爆破Key words
concentrated coal pillar/static stress/dynamic stress/support crushing disaster/blasting分类
矿业与冶金引用本文复制引用
邵红旗..动静载压架机理及综合爆破防治技术[J].煤矿安全,2019,50(1):79-83,5.
