唐家会煤矿顶板砂岩水综合立体快速超前疏放技术的应用与实践

Application and practice of comprehensive stereoscopic rapid advance drainage technology for roof sandstone water in Tangjiahui Mine

煤层顶板砂岩水一直是影响矿井安全生产的重大隐患。唐家会煤矿在首采工作面采用了顶板顺层长钻孔和普通穿层孔在结构设计、平面与空间布置等方面相结合,实现了煤层顶板砂岩水综合立体快速超前疏放技术,达到了安全生产的疏放水目标。此外,通过进行放水实验,研究衰减系数的变化曲线,将疏放水过程分为了3个阶段,确定唐家会矿区6煤顶板砂岩水具有以静储量为主、补给性较弱、能疏干的特点,为今后的安全开采提供了宝贵的经验。

Coal seam roof sandstone water had always been a major hidden danger affecting mine safety production.In the first mining face of Tangjiahui Mine,the roof bedding long boreholes and common through-layer boreholes were combined in structural design,plane and space layout,which achieved the comprehensive three-dimensional rapid advance drainage technology of sandstone water in coal seam,and reached the drainage goal of safe production.In addition,through the drainage experiment,the change curve of attenuation coefficient was studied,and the drainage process was divided into three stages.It was concluded that the sandstone water of No.6 coal roof in Tangjiahui mining area had the characteristics of static reserves,weak recharge and drainage,which provided valuable experience for future safe mining.