摘要
为了解决工作面初采期间坚硬顶板垮落困难的难题,以马脊梁矿8208工作面初采顶板处理研究为工程背景,通过工程类比与数值模拟相结合的方式,在现场实际调研的基础上,提出8208工作面初采深孔预裂爆破方案。结果表明:通过优化爆破参数,有效缩短8208工作面初次来压步距和来压强度,确保8208工作面初采安全。
In order to solve the difficult problem of hard roof caving during the initial mining of the working face,taking the research on roof treatment of the initial mining in the 8208 working face of Majiliang Mine as the engineering background.Through the combination method of engineering analogy and numerical simulation,on the basis of actual on-site investigation,the scheme of deep-hole pre-splitting blasting in the 8208 working face is put forward.The results show that the initial pressure step distance and strength of the 8208 working face can be effectively shortened by optimizing blasting parameters,and the safety of the initial mining of the 8208 working face can be ensured.
作者
张权
Zhang Quan(Majiliang Mine of Jinneng Holding Coal Industry Group,Shanxi Datong 037000)
出处
《山东煤炭科技》
2023年第2期56-57,60,共3页
Shandong Coal Science and Technology
关键词
初采
坚硬
爆破
预裂
initial mining
hard
blast
pre-splitting
