超高水材料分段开放式充填开采研究

超高水材料充填工艺是近年来发展较快的一种“三下”充填开采工艺。通过对超高水材料性能的研究及总结近年来在多个煤矿中的试验和应用所取得的经验，针对新光集团刘东煤矿煤层倾角较大的情况，提出了超高水材料预留煤柱分段开放式充填开采。通过留设煤柱和构筑隔离墙的方法隔离采空区，形成一个封闭的空间，对采空区进行充填，超高水材料浆液的高流动性可使其自行流入“采空”空间，并在短时间内凝结，通过固结体与垮矸形成的结构体控制上覆岩层活动，从而达到减缓地面沉降的目的。结果表明：在复杂的地质条件下，分段开放式充填工艺为超高水材料充填开采带来了更大的灵活性，使其具有了更广泛的应用空间。

Research on Segmentation Open Back-Filling Mining with Super High-Water Material

Super high-water material filling developed rapidly in recent years as a "under three" filling mining technology.Based on the research of Super high-water material’s properties and experience from experiments and applications in several coal mines recent years,segmentation open back-filling mining with super high-water material was proposed for Liudong Coal Mine,whose coal seam distribution is in large angle.By prearranged coal pillar and build partition walls in roadways to form a closed space for the filling operations,the slurry of super high-water material which has a high liquidity can automatically afflux into "goaf" area and condense in a short time in this way,the condensation body and gangue formed a complete structure which could control overlying strata activity and slow down the land subsidence effectively.The results showed that segmentation open back-filling mining technology brought the super high-water material a greater flexibility in complex geological conditions and made it have a wider application.