孤岛小煤柱工作面开采的技术经济分析

Technical and economic analysis of small coal pillar mining in isolated island

为分析孤岛小煤柱开采的现场实施效果和经济效益,以麻家梁煤矿4煤14203-1孤岛综放工作面为工程背景,采用现场观测和理论分析方法对工作面增加的技术投入和产生的经济效益进行研究。结果表明:与38 m宽大煤柱相比,小煤柱开采有利于实现巷道围岩控制,提高煤炭采出率,实现安全、高效开采。

To analyze the field effect and economic benefit of small pillar mining in isolated island, increased technical input and economic benefits was studied by using the methods of field observation and theoretical calculation through taking the 14203-1 fully mechanized longwall top coal caving mining face in island seam of 4#thick coal seam in Majialiang Coal Mine. The results showed that compared with the 38 m large coal pillar, the small coal pillar mining is conducive to the control of the surrounding rock of the roadway, which has improved the coal recovery rate,and has realized safe and efficient mining.