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土石比是土石方工程的一项重要参数,较准确的土石比对施工工艺选择及工程造价估算均具有十分重要的意义。文中以西南地区某在建机场为例,分析了当前土、石定义存在的困难,介绍了改进平均厚度法、平均断面法及土方软件辅助计算法3种土石比计算方法。结果表明,在明确土、石界定标准的前提下,借助详勘资料和地层揭露实况,使用上述方法计算的土石比较为接近,为提高计算结果的准确度和可信度,至少需采用两种计算方法进行反算验证。
Earth-rock ratio is an important parameter of earth-rock engineering. More accurate earth-rock ratio is of great significance to the choice of construction technology and project cost estimation. Taking a certain airport under construction in southwestern China as an example, this paper analyzes the difficulties existing in the definition of soil and stone, and introduces three methods for calculating the ratio of soil and stone: the improved average thickness method, the average section method and the earthwork software aided calculation method. The results show that under the premise of defining the criteria of delineation of soil and stone, with the aid of detailed survey data and the stratum exposing the actual situation, the earth and rock calculated by the above methods are relatively close. In order to improve the accuracy and reliability of the calculation results, at least two Calculation method for back verification.