大采高工作面末采顶板结构及控制技术研究

Research on Roof Structure and Control Technology at Ending Mining Stage in Large Mining Height Face

根据三交河煤矿大采高回采面末采回撤施工经验,结合末采施工工艺,分析了大采高回采面末采顶板控制机理,计算了末采顶板控制距离,提出了末采顶板控制关键技术,2-513工作面末采顶板控制技术的成功应用,为大采高工作面末采及回撤技术提供了参考依据。

According to the retreat construction experience at ending mining stage in large mining height work face of Sanjiaohe coal mine, combined with the mining technology, the roof control mechanism is analyzed, and the control distance of the roof is calculated, roof control technology at the ending mining stage is put forward. The suc- cessful application of 2 - 513 working face mining roof control technology at the ending mining stage provides the refer- ence for the mining and withdrawing technology of large mining height working face.