摘要
为探究含夹矸顶煤冒放性机理及增大冒放程度措施,以天安煤矿20103综放面为研究对象,分析了顶煤上方顶板三种岩梁结构和夹矸形态影响,制定了深孔预裂爆破技术措施。工程实践表明,深孔预裂爆破能够有效降低顶煤冒放块度,提高资源回收率,产生可观的经济技术效益。
In order to explore the caving mechanism of top coal containing gangue and measures to increase the caving degree,takes the 20103 fully mechanized caving face in Tian’an Coal Mine as the research object.In addition,analyzes three kinds of rock beam structures above the top coal,analyzes the influence of gangue shape,and formulates the technical measures of deep hole presplitting blasting.The engineering practice shows that the deep hole presplitting blasting can effectively reduce the caving block size of top coal,increase the resource recovery rate,and produce considerable economic and technical benefits.
作者
贾俊英
Jia Junying(Tianan Coal Mine of Yangquan Coal Industry Group,Shanxi Xinzhou 034000)
出处
《山东煤炭科技》
2021年第2期66-68,共3页
Shandong Coal Science and Technology
关键词
夹矸
顶煤
预裂
爆破
dirt band
top coal
pre-crack
blasting
