... open-circuit crushing 开路破碎 opencut mining 露天开采 open-end method 敞开进路式矿柱回采法 ...
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opencut mining machinery detail 露天采煤坏
opencut mining area 露天矿开采境界
opencut mining design 露天开采设计
opencut mining machinery 露天采煤机械
Opencut mining to well mine 露采转井采
opencut coal mining technology 露天采煤技术
opencut coal mine mining 露天煤矿开采
A great deal of dust and poisonous gas produced in the process of opencut mining pollutes the environment seriously.
露天开采过程中产生大量的粉尘和有害气体，严重污染了环境。
The paper puts forward 5 types of the geological hazards happened in Fushun coalfield:1. slope deformation caused by opencut mining;
抚顺煤田开采诱发的地质灾害有5种主要形态类型：露天开采导致的边坡变形；
Defining opencut mining area is the key link of opencut design and construction. Defining final mining area is equal to defining the mining and stripping quantity.
圈定露天矿开采境界是露天矿设计和建设的重要环节。
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