与地下矿山不同的是,露天矿山的开发必须考虑到矿山占地面积和边坡角等的多方面限制,这就决定了露天开采无法进一步获取更深层的资源。由于露天境界外和深部资源尚未得到有效利用,如果继续进行露天扩帮开采,不仅经济效益差,还会造成土地的大量使用,且剥离的大量废石会进一步恶化矿山及周边的生态环境和地质环境。目前多数露天矿山有几十年的开采历史,有的矿山已经进入中晚期。国有大型骨干露天矿 Unlike underground mines, the development of open pit mines must take into account various aspects of mine area and slope angle, which determine that open pit mining can not gain further access to deeper resources. Due to the fact that open-air and deep-seated resources have not yet been effectively utilized, it is not only inefficient but also extensive use of land due to continued open-pit expansion and exploitation, and the large amount of waste rock stripped will further aggravate the ecological environment and geology of the mine and its surroundings surroundings. At present, most open-pit mines have several decades of mining history, and some mines have entered the middle and late stages. State-owned large-scale backbone opencast mine