摘要
为了控制沿空巷道围岩变形,保证巷道稳定安全,以塔山煤矿8204工作面5204巷为工程背景进行特厚煤层小煤柱沿空掘巷试验性研究。巷道掘进期间采用锚杆、锚索、金属网、W钢带、锚索组合钢梁联合支护。由于工作面回采影响巷道围岩稳定,又在超前支承应力集中区域、采煤帮侧和小煤柱侧进行加强支护。现场巷道变形观测发现,5204巷采用的支护方式是科学合理的、安全可靠的,8204工作面现已回采完毕,围岩控制效果良好。
In order to control rock deformation and maintain the stability and safety of surrounding rock,based on the engineering background of 5204 roadway 8204 working face in Tashan Coal Mine,experimental study on thick coal seam small pillar along gob roadway was carried out.Roof bolt,anchor cable,metal mesh,W-type steel band and steel-anchor cable composite beams support,were adopted during roadway driving.As the stability of roadway surrounding rock was affected by mining,the support was strengthened in the stress concentration region,coal rib side and small coal pillar side.Based on the in-situ observation of roadway deformation,5204 roadway support way was scientific and reasonable,safe and reliable.Mining work was finished in 8204 working face,favorable effect was achieved in surround rock control.
出处
《煤炭工程》
北大核心
2017年第3期79-82,共4页
Coal Engineering
基金
国家自然科学基金煤炭联合基金资助项目(U1261207)
河南理工大学博士基金资助项目(648332)
关键词
特厚煤层
小煤柱
沿空掘巷
围岩控制
extra special thick coal seam
small pillar
gob-side entry driving
control surround rock
