基于ArcGIS普通克里格插值在土地平整土方量计算中的应用
Application of Ordinary Kriging Interpolation for Calculating Earthwork in Land Consolidation Based on ArcGIS
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摘要: 针对土地平整土方量计算方法研究不足的情况，以重庆市开县竹溪镇春秋、灵泉和大湾3个村整村推进项目为例，借助ArcGIS软件的统计模块对高程数据分布及趋势进行分析，并利用普通克里格法中球形、圆形、指数及高斯4种理论模型进行高程插值，分析预测误差，选取最优理论模型，计算挖填方量。研究结果表明，高斯模型拟合效果最佳，从分析数据来看，研究区典型片区一ME：-0.017 8、RMSSE：0.969 9、ASE：2.039、RMSE：2.374 5，共规划条田田块44块，面积29.732 6 hm2，土方量开挖49 959.1 m3；研究区典型片区二ME：-0.004、RMSSE：1.019、ASE：1.447、RMSE：1.531，共规划条田田块20块，面积22.904 9 hm2，土方量开挖32 935.0 m3。通过该方法对高程数据进行拟合，能高效科学计算条田平整中土石方量，为合理确定土地平整工程的工程造价提供依据。Abstract: To improve the calculation method of earthwork，Chunqiu，Linquan，Dawan villages of Zhuxi Town in Kai County in Chongqing were studied.Distribution and trend of elevation data were analyzed by Geostatistical module of ArcGIS software.Errors were predicted and best model was chosen by Spherical，Circular，Exponential and Gaussian models of Ordinary Kriging to calculate the earthwork of field.The results showed that in the 1st typical Area involving with 44 pieces of land and area of 29.7326 hm2，ME was-0.0178，RMSSE was 0.969 9，ASE was 2.039，RMSE was 2.374 5，and excavation was 49 959.1 m3；in the 2nd typical Area involving with 20 pieces of land and area of 22.904 9 hm2，ME was-0.004，RMSSE was 1.019，ASE was 1.447，RMSE was 1.531，and excavation was 32 935.0 m3.In conclusion，gaussian model fits best for such kind of calculation.
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Keywords:
- ArcGIS /
- Ordinary Kriging interpolation /
- Calculating earthwork of field /
- Chongqing city /
- Model
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