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首先要绘制出计算区域边界，欧博娱乐这里为了方便我随意画了一个圈，如图
2 第二步，由于只用于演示，我添加了一些高程点表示第一期高程数据
3 第三步，欧博allbet建立DTM，根据图面高程点，点选区域边界线
4 第四步，如图是建立好的三角网，建立好之后存取三角网为222.sjw作为首期三角网
5 第五步，存取完成后，用相同方法建立第二期三角网为333.sjw,并存取.
6 第六步，工程应用-dtm法土方计算-计算两期间土方，选择三角网文件，分别选择首期222.sjw,二期333.sjw,确定即可计算出方量
7 第七步：计算结果如图
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