矸石与爆破直接顶的联合充填

In the lane the "three times" coal, marginal coal gangue, traditional filling method, need a lot of coal, coal reserves of disadvantages often becomes a key restriction filling mining factors. In order to reduce the unit under the roof area, as far as possible amount needed for filling coal gangue maximum utilization of existing service for mining, put forward with gangue filling body after blasting, the direct roof combination supporting the overlying strata, i.e., the direct roof lithology, according to the thickness of coal, to determine the optimal height, and filling body already filling to calculation of the gangue filling body height, the direct roof, because blasting, the direct roof after breaking the hulking sex, make with gangue filling body mined-out area, achieve common filling full to pick up top overlying strata and the support role. Through the examples to adopt totally coal gangue filling, reasonable after blasting, the direct roof with joint filling, other proportion of coal blasting, the direct roof with joint filling the comparative analysis, knows the reasonable utilization of coal, the direct roof with joint filling after blasting, and, to some extent, solved the coal gangue lack of mining in filling, and improve work efficiency.