摘要
针对郑州煤电米村煤矿里28煤柱工作面在初放回采过程中,顶板坚硬,跨落不及时的问题,为降低顶板初次来压强度,通过采取预裂爆破强制放顶技术,消除工作面大面积悬顶带来的事故隐患。
Aimed at the situation of hard roof and caving not in time during the mining on No. 28 coal column working face in Micun Coal Mine of Zhengzhou Coal and Electric Co. , Ltd. , the deep-borehole pre-cracking blasting technology was adopted to reduce the initial roof intension, and the hidden danger caused by large suspended roof was avoided.
出处
《中国煤炭》
北大核心
2011年第12期57-59,共3页
China Coal
关键词
悬移支架
回采工作面
坚硬顶板
预裂爆破
爆破弱化
suspended support
working face
hard roof
deep-borehole pre-cracking
precracking blasting
blast weakening
