鞍钢新建的第十五空压机站工程建筑在地质条件较差的中部地区,建筑面积为2150平方米。原来是一个低洼池塘淤泥坑,因年久和废土弃置而形成人工填积的软弱土层,其厚度在4.2～6.8米范围内。因此该土层不能做建筑物地基,决定挖去软弱土层更换成砂垫层人工地基,其填筑的密实河砂量为 The fifteenth air compressor station project newly built by Anshan Iron and Steel Company was built in the central region with poor geological conditions, with a building area of ​​2,150 square meters. It turned out to be a low-lying pond silt pit, which formed artificially-filled soft soil layers due to age and waste soil disposal, and its thickness ranged from 4.2 to 6.8 meters. Therefore, this soil layer cannot be used as a building foundation. It was decided to excavate the soft soil layer and replace it with a sand cushion artificial foundation. The amount of compacted sand to be filled is