In cemented filling method, to choose a proper water cement ratio is an important work.
在胶结充填采矿法中，选择一个恰当的水灰比是一件十分重要的工作。
Cementing agent, which is one of the primary cemented filling materials, plays a key role in the mining technique.
胶结剂作为胶结充填材料的主要材料之一，在矿山充填采矿工艺中占有重要地位。
The underhand slice stoping with cemented filling is the most effective mining method for incompetant orebody with complicated mining conditions.
下向分层胶结充填采矿法是矿岩破碎、开采技术条件复杂的难采矿体最有效的采矿方法。
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