软弱煤层大采高工作面区段煤柱留设研究  

作　　者：许鹏飞 

机构地区：[1]应急管理部研究中心,北京100013

出　　处：《科技创新与应用》2023年第17期86-89,共4页Technology Innovation and Application

摘　　要：该文以长平煤业4203大采高工作面为背景,通过FLAC数值模拟软件,分析煤柱内部应力及塑性区分布情况,最终确定区段煤柱留设宽度为25 m。经现场实测,回采工作面推进前方侧向支承压力呈“马鞍形”稳定分布,4203工作面回风顺槽巷道表面变形观测顶底板最大移近量57 mm,两帮最大变形量38 mm,满足维持巷道稳定要求。Based on the 4203 large mining height working face of Changping Coal Industry,this paper analyzes the distribution of internal stress and plastic zone of the coal pillar through FLAC numerical simulation software,and finally determines that the reserved width of the section coal pillar is 25 m.Through the field measurement,the lateral abutment pressure in front of the advance of the mining face shows a"saddle shape"stable distribution.The maximum displacement of the roof and floor and the maximum deformation of the two sides of the roadway in the 4203 working face are 57 mm and 38 mm,respectively,which meet the requirements of maintaining the stability of the roadway.

关 键 词：软弱煤层 大采高 区段煤柱 塑性区 支承压力 收敛量 

分 类 号：TD82[矿业工程—煤矿开采]