急倾斜煤层上下山保护煤柱留设探讨  

Discussion on Setting of Protective Coal Pillar for Up and Down Hill in Steep Coal Seam

作　　者：王业常 万恒州 Wang Yechang;Wan Hengzhou(Fuxing Group Co.,Ltd.,Shandong Zaozhuang 277316)

机构地区：[1]福兴集团有限公司,山东枣庄277316

出　　处：《山东煤炭科技》2020年第10期90-92,97,共4页Shandong Coal Science and Technology

摘　　要：福兴煤矿在-750 m水平开采过程中受煤层采动移动角影响,大巷保护煤柱范围被无限扩大,以至于压煤量增加,给矿井开拓布局及采掘接续造成了严重影响。本文采用理论计算和现场实践分析总结了采场围岩应力分布规律及破坏特征,确定了-750 m水平上、下山煤柱的合理尺寸,为类似矿井大巷保护煤柱的留设提供了参考依据。In the process of-750 m level mining,Fuxing Coal Mine is affected by the mining movement angle of coal seam,and the scope of protective coal pillar in main roadway is expanded infinitely,so that the covered coal increases,which has a serious impact on the layout of the mine development and mining connection.The paper summarizes the stress distribution law and failure characteristics of the surrounding rock of the stope by theoretical calculation and field practice analysis.The reasonable size of the coal pillar at the level of-750 m is determined,which provides a reference for the retaining and setting of coal pillars in similar mine roadway protection.

关 键 词：急倾斜 保护煤柱 留设 

分 类 号：TD822.3[矿业工程—煤矿开采]