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为解决建筑物下深部压煤量较大,煤炭资源回采率低的问题,利用深部开采地表不易达到充分采动的原理,结合条带开采与全柱开采的优点,提出建筑物下深部压煤全煤柱间歇开采技术。结果表明:利用全煤柱间歇开采技术进行深部煤层开采,能充分利用极不充分采动地表变形较小的特点,使建筑物只受第一阶段的静态变形和全柱联合开采阶段的动态变形影响,地表动态变形及最终变形量均较小,减轻或消除了采动对地面受护对象的损害。
In order to solve the problem of large amount of coal under deep pressure in building and low recovery rate of coal resources, the principle of fully mining on deep mining surface is not easy to be achieved. Combined with the advantages of strip mining and full-pillar mining, All coal pillar intermittent mining technology. The results show that the mining of deep coal seam by intermittent coal pillars mining technology can make full use of the characteristics of less sufficient ground surface deformation and make the building be subjected to only the first stage of static deformation and dynamic deformation of the whole column joint mining Impact, surface dynamic deformation and the final deformation are small, reducing or eliminating the mining on the ground to protect the object damage.