摘要
综放工作面的顶板管理相比其他工作面要更加复杂、困难。在分析研究复杂坚硬顶板弱化方法及弱化机理的基础上,针对山西A煤矿选择深孔爆破方式弱化顶板进行了分析,并对弱化效果进行了考察。结果表明,深孔预裂爆破有效降低了顶板强度,缩短了来压步距,取得了较好的效果,为同类工程实践提供了一定的借鉴。
The roof management of fully mechanized caving face is more complicated and difficult than other working faces. On the basis of analyzing and studying the weakening method and mechanism of complex hard roof, this paper analyzed the weakening method of deep hole blasting in Shanxi A Coal Mine and investigated the weakening effect. The results showed that the deep hole pre-split blasting could effectively reduce the roof strength, shorten the pressure step distance and achieve good results, which provided certain reference for similar engineering practice.
作者
李殷
LI Yin(Tiefeng Coal Industry Co., Ltd., Datong Coal Mine Group, Youyu 037200, Shanxi, China)
出处
《能源与节能》
2019年第3期177-178,共2页
Energy and Energy Conservation
关键词
综放工作面
坚硬顶板
弱化方法
深孔爆破
fully mechanized caving face
hard roof
weakening method
deep hole blasting
