大规模开采 meaning in Chinese

large scale mining

Coal was one of the first minerals to be mined on a big scale , to provide fuel for heating homes
煤炭是人们最早大规模开采的矿物质之一，其目的是为供暖提供原料。
The over - exploited deep confined water , which is replenished by surface water and phreatic water , is also polluted
由于大规模开采，深层承压水受到地表水和浅层地下水的补给，水质也有污染。
The application of pointed prop mechanical slice stoping and backfilling mining in sanshandao gold mine is presented . it is characterised by high mechanization degree , great capacity of slice stoping and low mining loss rate and ore dillution rate . as a result , it is suitable for the large - scale mining of low grade deposit
介绍了点柱式机械化分层充填采矿方法在三山岛金矿的应用，该采矿方法机械化程度高，采场分层生产能力大，两率指标较低，适用于低品位矿床的大规模开采。