浅析方格网法在杨房沟水电站工程计量中的应用

Application of square grid in construction quantity calculation of Yangfanggou Hydropower Station

工程计量需要有较强的说服力和较为严谨的计算过程,一般使用横断面进行工程量计量。为了确定方格网土方计算方法在雅砻江杨房沟水电站前期工程计量中的适用性,通过对方格网土方计算原理的探究,分析了其使用范围、适用条件、方格宽度对计算成果的影响及其取值原则。以杨房沟导流洞进口底板地质超挖工程量计量为例,分析了使用方格网土方计算方法的具体应用步骤和其计算快速高效的特点,以及与断面计算方法相比较具有的优势。结果表明,该方法在某些小范围的土石方工程计量中应用,可以提高工程量计量的效率和可靠性。

The construction quantity calculation is required to be strong persuasive and rigorous process, generally, we use the method of cross section to calculate the construction quantity. In order to demonstrate whether the method of square grid earthwork calculation can be used in the construction quantity calculation for the initial stage work of Yangfanggou Hydropower Station, the application scope and conditions, the influence of square grid width on calculation results and the parameter determination principles were analyzed. Taking the over - excavation quantity calculation for the foundation at inlet of diversion tunnel of Yangfanggou Hydropower Station for example, we illustrate the application steps, the characteristics of high efficiency compared with the cross section method. The results show that the square grid earthwork calculation method can be used in some small construction quantity calculation and can improve calculation efficiency and reliability.