煤峪口矿工作面煤柱巷道围岩破坏特征及控制技术

Failure Characteristics and Control Technology of Surrounding Rock of Coal Pillar Roadway in Working Face of Meiyukou Mine

以煤峪口矿81020工作面临空煤柱巷道为研究对象,采用数值模拟及现场实测的方法对综放工作面临空煤柱巷道的应力环境及围岩破坏特征进行研究,设计了81020上顺槽的支护方案。巷道顶底板的最大移进量为114 mm,煤柱帮的最大移进量为83 mm,回采帮的最大移进量为97 mm,围岩变形量较小,控制效果良好。

Taking the 81020 working face empty coal pillar roadway in Meiyukou Coal Mine as the research object,the stress environment and surrounding rock failure characteristics of the empty coal pillar roadway in fully mechanized top coal caving face are studied by means of numerical simulation and field measurement,and the support scheme of the 81020 upper channel is designed.The maximum displacement of the roof and floor of the roadway is 114 mm,the maximum movement of the coal pillar side is 83 mm,and the maximum movement of the mining slope is 97 mm.The surrounding rock deformation is small and the control effect is good.