冶金矿山工程大多建在山区或半山区,因此冶金矿山工程的地基问题也伴随着山区的特征而发生了。俗话说山区三步一换土,就是指山区工程地质变化复杂,笔者在某矿山选矿厂的建设中所遇到的情况就有一定的代表性。某选矿厂主厂房建筑面积8000m~2,占地面积6500m~2,由五跨组成,沿山的坡度由下而上呈阶梯形,最低跨地面至最高跨下弦高 Metallurgical and mining projects are mostly built in mountainous areas or semi-mountainous areas. Therefore, the foundational problems of metallurgical and mining projects have also occurred along with the characteristics of mountainous regions. As the saying goes, a three-step exchange of land in the mountainous area means that the complex changes in the engineering geology in the mountainous areas. The author has a certain degree of representation in the case of the construction of a mine concentrator. The construction area of ​​the main plant of a concentrator is 8000m~2, covers an area of ​​6500m~2, and consists of five spans. The slope along the mountain is ladder-shaped from bottom to top, with the lowest cross-ground to the highest cross chord height.