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现在中小型电厂通常采用的土方开挖方法有两种:一是土方大开挖,即将整个厂房占地面积的土方全部挖掉推平,这种方法便于机械化施工,但挖、填方量大,有的设备基础及沟道都施工在回填土上,所以是一种很不经济的开挖方法.二是地坑挖法,即将有基础处的土挖掉,这科方法不能使用机械开挖,而目汽机基座、炉座等设备基础开挖后土堆积成山,车辆无法通过,其他施工工序无法进行,所以这种方法既慢也不经济.笔者经过多年的研究,根据准格尔旗电厂、702电厂、海化由厂等小型电厂的实际情
At present, there are two types of earth excavation methods commonly used by small and medium-sized power plants: First, large-scale excavation of the earthwork, that is, all the earthwork of the entire plant area is dug out and leveled out. This method is convenient for mechanized construction, but the amount of excavation and filling is large. Some equipment foundations and trenches are constructed on the backfill soil, so it is a very uneconomical method of excavation. The second method is excavation of ground pits and the excavation of foundation soil is about to begin. This method cannot be used to open machinery. Digging, but the base of the turbine, furnace base and other equipment after the foundation excavation soil piled up, the vehicle can not pass, other construction processes can not be carried out, so this method is neither slow nor economic. The author after years of research, according to Zhungeer The actual situation of small power plants such as Qiqi Power Plant, 702 Power Plant, and Haihua Plant