mining shaft and open-pit 采矿井场
shaft mining 竖井开采法 ; 竖井开采
mining of shaft coal pillar 井筒煤柱开采
cover-mining vertical shaft 盖挖竖井
ri-gold-shaft-mining 采金装置
Not only is the escape shaft ready, but the special capsule that was sent down to rescue the men has been tested to a depth of 610 metres, and the Mining Minister Laurence Golborne says all went well.
不仅营救巷道做好了准备,用于搭救被困矿工的特制救生舱也在地下610米的深度进行了测试。 矿务部长戈尔本(Laurence Golborne)表示一切工作进展顺利。
Non-mining fracturing of shaft lining is a special engineering geologic hazard and is caused by interaction between mining and geological environment.
立井井筒非采动破坏是一种特殊类型的工程地质灾害,是人类采矿活动和地质环境相互作用的结果。
The fracture of shaft lining is a special type of engineering geologic disasters and is caused by interaction between mining and geological environment.
立井井壁破坏是一种特殊类型的工程地质灾害,是人类采矿活动和地质环境相互作用的结果。
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