摘要
为了合理开发利用煤炭资源,延长矿井服务年限,缓解采掘紧张局面,确保矿井健康可持续发展,对单家村煤矿6311工作面开展了提高开采上限的研究。通过分析研究第四系水文地质条件,确定了含水层类型及水体采动等级,通过理论计算得到"两带"高度。在此基础上设计了合理的安全煤岩柱尺寸,使开采上限提高了25m煤柱,取得了良好的经济效益。此设计对相同地质条件下安全煤岩柱的尺寸选取提供了借鉴。
In order to develop and use coal resources legitimately, extend the mine service life, ease tensions between recovering and tunneling and ensure the mine developing healthily and sustainably, research of improving mining limit is carried out in 6311 working face of Shanjiacun coal mine. Through analyses of geological conditions of quaternary system, the aquifer types and water body mining dynamic grade is cleared. By the way of theoretical analysis, the heights of the fractured and caved zones are calculated. The logical size of coal and rock pillar for safety is designed, which improves the mining limit for 25m and achieved good economic benefits,which provide a reference to the size of coal and rock pillar for safety under the same geological conditions.
出处
《中国矿业》
北大核心
2013年第3期73-75,共3页
China Mining Magazine
关键词
厚煤层
分层开采
开采上限
安全煤岩柱
thick coal seam
slice mining
mining limit
coal and rock pillar for safety
