我国露天矿近二十年来,普遍采用并段措施,将二个或三个台阶并为一段,使段高变为20～36米,清扫平台宽度由4～8米,变为8～12米。这样做取得了显著效果:减少了剥离量,节约了资金,降低了生产成本。但是并段后也存在一些问题:清扫平台还是太窄;没有通往清扫平台的车路,机械上不去,边坡清扫还是靠人工,困难极大。 In the past two decades, the opencast mines in our country have been widely adopted and measures have been taken to separate two or three steps into one section and make the section height to be 20 to 36 meters. The width of the cleaning platform ranges from 4 to 8 meters to 8 to 12 meters . This has achieved remarkable results: reducing the amount of stripping, saving money, reducing production costs. But after the paragraph and there are some problems: cleaning platform is too narrow; there is no access to the sweeping platform of the road, machinery does not go, slope cleaning or rely on labor, great difficulty.