【摘要】 在急倾斜长壁工作面沿倾斜方向形成老顶平衡结构的理论基础上,进一步研究了老顶平衡结构的阻水性能.通过建立王家山矿区老顶平衡结构受力与孔隙水压力之间的关系,得出老顶平衡结构起到阻水作用所需的工作面采深为238.52 m.通过现场监测工作面内雨水流量与采深的关系得知,当采深大于235 m时,工作面内雨水流量开始减小.理论推导结果与实际结果基本吻合,从而证明了在一定采深下,老顶平衡结构可以起到阻止雨水入渗的作用.更多还原

【Abstract】 There is a bearing structure along lean direction in main roof rocks due to mining in steep long-wall seam.On the base of this theory,the effect of the water-block of this bearing structure along lean direction was analyzed.The mining depth to prohibiting from rain was 238.52 m in Wangjiashan mining area,and it was calculated through the relation between the stresses of the bearing structure and the pore pressure.The relation between the fluxes in the working face acquired from statute and the mining depth indicates that the fluxes in the working face become less and less when the mining depth is over 235 m.The results from theoretical arithmetic are nearly consistent with the results from statute.The bearing structure along lean direction in main roof rocks due to mining in steep long-wall seam can prohibit from rain in special mining depth.更多还原