(1) The mining and cutting engineering volume is small and the flexibility is large;
(2) Loss of ore and small depletion;
(3) It can effectively maintain surrounding rock, reduce the movement of surrounding rock and prevent a large amount of falling;
(4) For thin ore veins or multi-species ore, sorting and recovery can be carried out;
(5) It can prevent internal fires caused by mining deposits;
(2) Disadvantages:
(1) The mining process and the filling process are complicated.
(2) Filling and mining affect each other. If the mechanization of mining operations cannot be properly solved, the production efficiency and production capacity are relatively low;
(3) The mining, processing, transportation and other series of consumption of filling materials make the ore cost higher. The cost of mining and accumulating fillings accounts for 40-50% of the cost of mining.
(4) High labor intensity;
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