准好氧填埋场的温度空间变异性

利用半变异函数, 对准好氧填埋装置中温度的空间变异特性进行了研究，并对装置内部温度进行了Kriging（克里格法）插值，得到纵剖面的等温线图.对不同理论模型进行优化拟合结果表明，剖面上温度半变异函数用线性有基台值模型拟合, 效果最好.得到的理论模型参数为：变程3.5 m，基台值83.6.利用克里格法进行最优内插估值得到的温度等温线表明，高温区域一般位于填埋体中段4～16 m的3 m以上部分，低温区域一般位于填埋体两端及中段1 m以下部分.可在高温区加大通风散热效果, 以降低过高的温度; 在低温区改善好氧环境, 增大氧气含量, 从而提高温度.对剖面上温度进行加权平均后，得到的准好氧填埋堆体的温度为59.8 ℃.这一温度可作为准好氧填埋结构基本形成的参考值.

Spatial variability of temperature in semi-aerobic landfilling structure

The study indicated that the semivariogram function of temperature in semi-aerobic landfilling structure could be well modeled by the linear with sill model. The correlation range of the profile was 3.5 m, and the sill value was 83.6. The unmeasured temperature values were interpolated with Kriging method, and the temperature isoline showed that high temperature region located at 3 to approximately 5.5 m in the vertical direction of the middle part, while low temperature area laid in 0 to approximately 1 m on the two sides of the landfill structure and substrate. The weighted average temperature of the profile was 59.80 degrees C, which could be regarded as the indicator of landfilling structure' s formation.