摘要
东曲煤矿28214工作面区段留设煤柱宽为21.2 m,富余空间较大,对巷道变形量、煤柱松动圈和煤柱应力进行监测,将28214工作面区段煤柱宽度划分为塑性区和弹性核区,计算确定留设煤柱宽度为16.8 m,在该煤柱宽度下监测巷道收敛量,顶板最大下沉量48 mm,两帮收敛量最大46 mm,保证了巷道稳定性,减少了煤炭的浪费。该技术可为其他类似矿井提供借鉴。
The width of coal pillar in No.28214 Face of Dongqu Coal Mine is 21.2 m,and the surplus space is large.The deformation of roadway,the loose circle of coal pillar and the stress of coal pillar were monitored.The width of coal pillar in No.28214 Face was divided into plastic zone and elastic core zone.The width of coal pillar was calculated to be 16.8 m.The convergence of roadway was monitored under the width of coal pillar.The maximum subsidence of roof was 48 mm,and the maximum convergence of two sides was 46 mm,which ensured the stability of roadway and reduces the waste of coal.This technology can provide reference for other similar mines.
作者
韩敬
Han Jing(Dongqu Mine of Shanxi Coking Coal Xishan Coal Electitity,Taiyuan 030200,China)
出处
《煤炭与化工》
CAS
2023年第7期23-26,共4页
Coal and Chemical Industry
关键词
塑性区
弹性核区
煤柱宽度
收敛量
plastic zone
elastic nuclear region
coal pillar width
convergence amount
