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本文论述了应城石膏矿G_z-8膏组上行开采工作面采用充填法管理老顶的必要性,及工作面直接顶维护应满足减小顶板应力、改变开始离层点位置、把最大剪应力与最大拉应力点移向充填区,以保证采场工作空间顶板的完整性的要求,并提出了采场支护方式的改进意见。最后指出了对初次来压的管理是顶板管理的关键,应引起足够重视。
This paper discusses the necessity of filling the upper mining face with G_z-8 gypsum group in Yingcheng gypsum mine, and the direct top maintenance of working face should meet the requirements of reducing the roof stress, changing the position of starting delamination point, changing the maximum shear stress And the maximum tensile stress point to the filling area, in order to ensure the integrity of the work area roof stope requirements, and put forward the improvement measures of stope support. Finally, it points out that the management of initial pressure is the key to roof management, which should be given enough attention.