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在开采建筑物下煤层的过程中,为了避免地下采煤可能引起地表移动并导致地面建筑物破坏,结合田庄煤矿建下超高水充填开采项目,根据开采沉陷理论,采用数值模拟方法对地表移动规律进行了研究。结果表明,在采用超高水材料充填开采中,因为超高水材料含水量高,具有高流动性,可在岩层活动期内自行流入煤层开采后所形成的“采空”空间并在可控时间内胶结、凝聚,凝固后的充填体与垮矸以及围岩形成一完整的结构体来控制上覆岩层活动,从而有效控制地表的剧烈移动。
In the process of mining coal seams under buildings, in order to avoid underground coal mining may cause surface movement and damage to the ground buildings, combined with the construction of ultra-high water filling and mining project in Tianzhuang Coal Mine, according to mining subsidence theory, numerical simulation is used to measure the movement of the ground surface The law was studied. The results show that ultra-high water materials with high water content and high fluidity can flow into the “mined-out” space formed after the coal seam mining during the active period of the rock strata during the filling period Controlled over time within the cementing, coalescence, solidification of the filling body and collapsed rock and the surrounding rock to form a complete structure to control the overlying rock activity, thus effectively controlling the dramatic ground surface movement.