摘要
以西河煤业3#煤层残留煤综采一次采全高新掘巷道作为研究对象,对其合理煤柱宽度进行数值模拟,分别对留设3 m、4 m、5 m、6 m、7 m、8 m煤柱宽度的围岩应力分布规律、围岩变形规律和围岩破坏规律进行研究,得到新掘巷道护巷煤柱合理宽度为6 m。
Taken new tunneled roadway of one pass cutting coal used full mechanized mining technology in residual coal in 3% coal seam in Xihe mine as research subject, the reasonable width of coal pillar was numerical simulated in this paper, the surrou- nding rock stress distribution, the deformation law of surrounding rock and the failure law of surrounding rock were studied when the width of coal pillar is 3 m -8 m. The reasonable width of coal pillar protecting roadway about the new roadway is 6 m.
出处
《能源与节能》
2015年第6期154-155,共2页
Energy and Energy Conservation
关键词
残留煤
新掘巷道
煤柱宽度
residual coal
new tunneled roadway
coal pillar width