摘要
在土地整理项目规划设计中,准确快速地计算土方量对规划设计、投资估算及资金分配等具有重要意义。该文提出了一种新的进行丘陵地区梯田土方量计算的方法、原理和相关计算模型;构建了完整的土方量计算系统,并以一个土地整理项目为例,进行了验证。用所提出的方法计算的土方量与G IS软件计算的结果进行比较,采用5°和2°坡度分级时误差分别为5.4%和3.9%。表明该方法具有较高的精度和简便、快捷的特点,并且坡度分级间隔越小,计算结果精度越高。只要给定梯田样式,用该法在规划设计之前就可以估算土方量,为今后丘陵地区梯田土方量的计算提供了新的思路,提高了规划审查效率和效果。
In the land consolidation project planning, it is significant to estimate the earthwork in the design, cost estimation and investment budgeting of a project. A new method was advanced in this study to calculate the earthwork of terraces in the hilly regions. Its principle ideas and the computational formulae were detailed. The earthwork volumes under different slopes to construct a terrace of the given pattern were integrated with the weighed function of the distribution function of areas to get the total earthwork volume. An actual exemplary project was used to verify the method. The relative errors of the earthwork estimated with this method compared with that computed with GIS were 5.4% and 3.9 % for slope gradients of 5° and 2°, respectively. This indicates a very high accuracy of the method for earthwork estimation, with improved accuracy with smaller slope intervals used. The method is convenient to use for fast earthwork determination, which can be used to determine the earthwork even before project design as long as the patterns of terraces were given. This method not only supplies the engineers with a robust but useful tool for earthwork computation during their project design, but also improves the efficiency and enhances the output of project assessment.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2007年第4期47-51,共5页
Transactions of the Chinese Society of Agricultural Engineering
关键词
梯田
土方量
快速计算
丘陵地区
terrace
earthwork
fast estimation
hilly region
