露天采石就是自地表挖掘一系列露天沟道至露天石场地内各个矿体,建立地面与生产台阶(在开采过程中,逐步形成的阶梯状工作面)的运输联系,从而形成露天采场到选石厂或碎石厂、排土场或工业广场之间的运输系统,以保证剥采工作的正常进行。根据露天矿的运输方式,分为铁路运输开拓,公路运输开拓,平硐溜井开拓,斜坡卷扬(提升)开拓及胶带运输开拓。
石灰石通常在大型露天采石场开采,其中,许多还将进行一些材料的处理。
Limestone is usually mined in vast open-cast quarries, many of which will also carry out some processing of the materials.
车库顶,高树上树枝,陡峭的露天采石场,不管是什么,好像都让你非常想去攀爬。
The garage roof, a limb on a tall tree, a steep rock quarry, whatever it is, it looks tempting to climb.
那是在露天采石场,在那些犹太人上面是士兵,一个军官坐在突出的岩石上,摇摆着他的腿,吸着香烟。
It was in a quarry, and above the Jews and the soldiers there was an officer sitting on a ledge in the rock, swinging his legs and smoking a cigarette.
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