摘要
为了弄清煤巷工作面掘进期间煤炮产生原因和发炮机理,以山西某矿8204-2工作面回风巷为研究背景,统计了煤炮发生的频次,并分析了煤炮次数与煤柱宽度之间的关系。在此基础上,探讨了煤炮的发生主要受侧向应力变化的影响,并通过对上区段和本区段的侧向应力分布规律研究,得出煤炮的发炮规律与侧向支撑压力的变化规律有着密切的关系。研究结果表明,工作面侧向支撑压力的峰值位置、影响范围、变化曲线的张开度与一次开采厚度呈现正比例关系,而峰值大小与其呈反比例关系,工作面侧向支撑压力的分布规律与煤炮的产生息息相关。
In order to clarify the cause of the coal cannon during the excavation of the coal roadway face and the firing mechanism,the frequency of coal cannon occurrence was counted and the relationship between the frequency of coal gun occurrence and the width of coal pillar was analyzed.On this basis,the influence of lateral stress on coal gun occurrence was discussed.By studying the lateral stress distribution law of the upper section and this section,it is concluded that there is a close relationship between the blasting law of the coal cannon and the variation law of the lateral support pressure.The results show that the peak position of the lateral support pressure,the influence range,the opening of the variation curve and the thickness of the primary mining face are positive.The peak value is inversely proportional to the proportionality,and the distribution law of lateral support pressure is closely related to the occurrence of coal cannon.
作者
王彬彬
Wang Binbin(Xishan Coal and Electricity Co.,Ltd.)
出处
《现代矿业》
CAS
2019年第5期131-133,137,共4页
Modern Mining
