摘要
主要以赵固一矿16011工作面为工程背景,对顶板预裂切缝高度、角度以及钻孔间距等主要指标进行研究。根据预裂切缝高度和角度,结合现场工程实际确定双向聚能爆破装置的间距为600 mm。
The 16011 working face of Zhaogu No.1 mine is taken as the engineering background. The main indexes such as height and angle of the pre-slit of the roof, and the distance between the holes are researched. According to pre-splitting cracks height and angle,combined with on-site engineering practice to determine the two-way shaped blasting device spacing is 600 mm.
出处
《煤炭技术》
北大核心
2017年第6期174-176,共3页
Coal Technology
关键词
切顶卸压
沿空留巷
预裂缝设计
cutting roof relieving pressure
gob-side entry retaining
pre-splitting cracks design
