将尾砂胶结后用于充填采空区，可以减少环境污染和地表破坏。
Cementing tailings to fill gob area can both reduce environmental pollution and ground destruction.
在此系统中，首先要考虑采充平衡的问题，即选矿所得尾砂能够全部用于充填采空区。
In this system, the question of the balance between mining and filling should be considered firstly, that is, all of the tailing should be used for bashing.
针对这一情况，从药室爆破放顶充填采空区，从而达到分层崩落法采矿的护顶层要求。
Based on this case, through filling the gob area by means of chamber blasting, the requirement of protective top - layer for slicing and caving can be achieved.
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