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基于大量畦田实测数据,利用半方差方法分析各类畦块的田面相对高程空间变异结构特征,评价畦块几何参数与田面相对高程空间变异特征参数间的相关性,提出采用球状模型描述田面相对高程空间变异函数和估算空间变异特征参数的方法。结果表明,畦块几何尺寸和田面相对高程测点间距是影响田面相对高程球状半方差函数变程的重要因素,田面相对高程标准偏差和田面相对高程测点间距则对该函数基台值和块金值产生明显作用和一定影响。对任意已知规格的畦块,可基于5~10m测点间距范围内获得的相对高程标准偏差值并参考本文提出的估算公式,得到利用球状理论半方差函数描述各类畦块田面相对高程空间变异特征的经验参数估值。
Based on a large number of field measurements, the semi-variance method was used to analyze the spatial variability of the surface relative spatial variability of various types of rock masses. The correlation between the rock mass geometric parameters and the relative spatial variability of field surface parameters was evaluated. The spherical model was used to describe the relative elevation Spatial variability functions and methods for estimating spatial variability parameters. The results show that the geometrical size of plutonium block and the relative elevation measurement point of field are the important factors which affect the spherical half-variance function of relative elevation of field surface. The relative elevation standard deviation of field surface and the measuring point spacing of field relative elevation, The value of gold has a significant effect and a certain impact. For any block with known specifications, based on the relative standard deviations obtained in the range of 5 ~ 10m measuring points and with reference to the estimation formula proposed in this paper, the semi-variance function of spherical theory can be used to describe the relative height of field Empirical parameter estimation of variation characteristics.