坚硬顶板煤层条带开采的采留宽度  

Mining width to pillar with strip mining in coal seams with thick and hard roof

作　　者：路占元[1] 郝鑫[1] 刘利平[1] 

机构地区：[1]黑龙江科技学院资源与环境工程学院,哈尔滨150027

出　　处：《黑龙江科技学院学报》2011年第5期377-380,共4页Journal of Heilongjiang Institute of Science and Technology

摘　　要：针对坚硬厚层顶板煤层采用长壁开采容易形成大面积悬顶的问题,根据黑龙江省某矿地质条件,采用理论计算和数值模拟方法,研究了条带开采的合理采留宽度。结果表明,该矿条带开采采出宽度为30 m,煤柱留宽为21.73 m较为合理,条带煤柱稳定性较好。理论计算和数值模拟结果一致,为避免顶板大面积垮落、保护地面建筑物安全和矿井生产安全提供了依据。Aimed at addressing a large area of roof overhang due to longwall mining of coal seams with thick and hard roof,this paper is a research on the reasonable widths of strip mining by using theoretical calculations and numerical simulation,based on the geological conditions of one mine in Heilongjiang province.The results show that the mining width of 30 m and the more reasonable width of 21.73 m meant for coal pillar,produce a more stable strip pillar.The theoretical calculation is consistent with the numerical simulation results.This result provides a basis for avoiding the roof collapse,and protecting the safety of the ground buildings and ensuring mine production.

关 键 词：坚硬顶板 条带开采 采宽 留宽 数值模拟 

分 类 号：TD355[矿业工程—矿井建设]