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作 者:杨福禹[1] 张振扬 翟强[1] Yang Fu-yu;Zhang Zhen-yang;Zhai Qiang(Yankuang Group Jining No.3 Coal Mine,Shandong Jining 272000)
出 处:《山东煤炭科技》2020年第8期44-46,49,共4页Shandong Coal Science and Technology
摘 要:为解决硬岩巷道围岩硬度大、强度高、普通的炮眼布置爆破效果差、循环进尺低的问题,以济宁三号煤矿七采区3下辅运巷掘进工作面为研究对象,建立了楔形掏槽力学模型,推导了楔形掏槽眼内围岩的极限平衡状态力学公式,并对硬岩巷道爆破参数设计进行了优化,取得了良好的效果,实现了硬岩巷道安全高效掘进。In order to solve the problems of high hardness,high strength,poor blasting effect and low cyclic advance,this paper takes the 3lower auxiliary roadway heading face of No.7 mining area in Jining No.3 Coal Mine as the research object,a wedge-shaped cutting mechanical model is established,the mechanical formula of limit equilibrium state of surrounding rock is deduced,the design of blasting parameters of hard rock roadway is also optimized.It achieved good results and realized the safe and efficient excavation of hard rock roadway.
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