小窑破坏区残煤综放开采覆岩破坏规律模拟研究

Simulation on overburden failure law of fully mechanized top coal caving of residual coal in small mine failure zone

为减少残采资源浪费及残采空区诱发的地质灾害,以韩咀煤矿32101工作面厚煤层综放复采为工程背景,采用相似模拟方法设计开采方案,反演3#煤层上分层采空区围岩及煤柱的稳定特征,布置测量标识点并埋设模拟支架,研究综放复采工作面过煤柱及空区时顶板变形规律,揭示了韩咀煤矿32101工作面覆岩破断规律。研究结果为井田内接替工作面安全开采提供参照,同时为类似条件矿区残留煤炭资源的复采提供借鉴。

In order to reduce the waste of coal resources and geological disasters induced by the residual goaf,based on the engineering background of the thick seam fully mechanized top coal caving in 32101 working face of Hanzui Coal Mine,similar simulation is used to design the mining scheme,and the stability features of the surrounding rock and coal pillar in the upper layer goaf of 3#coal seam are inversed,the survey marks are arranged and the simulation support is embedded,to study the roof deformation law as the working face passes through coal pillar and goaf,and breaking law of the overlying rock in 32101 working face of Hanzui Coal Mine is revealed qualitatively.The results can provide reference for the safe mining of the substituted working face in the mine field,and provide reference for re-mining of residual coal resources in mining areas under similar conditions.