The engineering geology characteristics of the slope rock body are vital important for the selection of open-air mining slope Angle and the stability of the slope.
边坡岩体的工程地质特性对露天开采边坡角的选定及边坡的稳定性至关重要。
In conducting coastal open air placer mining or shore-based well drilling to exploit seabed mineral resources, effective measures must be taken to prevent pollution to the Marine environment.
露天开采海滨砂矿和从岸上打井开采海底矿产资源，必须采取有效措施，防止污染海洋环境。
During joint mining of open-pit and underground, the ground air leakage control was realized by laying the capping layer on the open pit.
在露天与地下联合开采时期，控制地表漏风主要通过露天坑底铺设覆盖层来实现。
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