车集煤矿2611工作面煤巷片帮机理分析与控制技术研究

Mechanism Analysis and Control Technology of Coal Roadway in the 2611 Working Face of Cheji Coal Mine

为有效解决2611工作面上巷在掘进过程中两帮煤体片帮严重的问题,通过对煤巷片帮机理分析,对顶板锚杆不同支护参数下巷道两帮变形情况的数值模拟研究,结合工作面条件对2611工作面上巷的支护方案进行优化。巷道采用优化后的支护方案后,两帮的最大移近量为170mm,无片帮情况出现,有效地控制了巷道两帮的变形,保证了巷道围岩的稳定。

In order to effectively solve the serious problem of the two sides of the roadway in 2611 working face,through the analysis of the mechanism of the two sides of the roadway,the numerical simulation of the deformation of the two sides of the roadway under different supporting parameters of roof bolt is studied,and the support scheme of the roadway in 2611 working face is optimized combined with the working conditions.After adopting the optimized support scheme,the maximum displacement of the two sides is 170 mm,and there is no slice of the side,which effectively controls the deformation of the two sides of the roadway and ensures the stability of the surrounding rock of the roadway.