摘要
以西河煤矿3号煤层工作面护巷煤柱留设为背景,通过建立力学模型分析了煤柱的整体受力状态并计算出了煤柱的合理尺寸,运用数值模拟分析了工作面回采过程中煤柱受力情况及围岩破坏情况,得出煤柱留设的合理宽度为15 m。并在现场得到成功的应用。为类似条件下工作面顺槽煤柱留设提供科学依据。
In the condition of no.3 coal seam coal mine working face this chain pillars as the background,by establishing the mechanical model overall stress state of coal pillar are analyzed and calculated the reasonable dimension of coal pillar,in the process of mining face were analyzed by using numerical simulation stress distribution and damage of surrounding rock and coal pillar that leave a set of reasonable coal pillar width is 15 m and get success in the field of application for the similar working face under the condition of the groove design,to provide scientific basis for the coal pillar.
作者
刘伟
LIU Wei(Emergency Management Bureau of Yangcheng County, Jincheng City,Yangcheng 048100, China)
出处
《煤》
2020年第3期8-10,共3页
Coal
基金
内蒙古自治区自然科学基金资助项目(2018LH05009)
关键词
护巷煤柱
数值模拟
应力
roadway pillar
numerical simulation
stress
