The theoretical formula by cross-area method for measurement of earthwork and stonework quantities in dredging and damming works with trapezium cross section is derived.

• 推导了梯形横断面的航道疏浚和筑坝工程采用断面面积法进行土石方计量的理论公式,通过误差分析,得出现行计算公式存在理论正误差,提出了减少计量误差措施。