The Variation of Land Temperature in Different Years of Sandstone and Sand

Abstract

In order to analyze the effect of different ages of sandstone and sand on soil temperature, this study selected the compound soil with 2 years of soil formation and 9 years of soil formation, using loess: sand 1:2, sandstone: sand 1:1, sandstone: sand 1:2, sandstone: sand 1:5, sandstone: sand 0:1 different proportions of soil for research, using geothermal meters for different soil layers (5cm, 10cm, 15cm, 20cm, 25cm) temperature observation. The results show that: 1. The variation of ground temperature in different soil layers of 2 and 9 years of soil formation shows 5cm>10cm>15cm>20cm≈25cm, the basic performance is that the temperature of the soil in the 9- year-old compounding soil is lower than the temperature of the soil in the soil for 2 years. 2. The soil of 2 years of soil formation is characterized by sandstone in different soil layers: sand = 1:2, the highest temperature, sandstone: sand = 0:1 compound soil temperature is the lowest; soil formation 9 years compounding The soil has the lowest loess in different soil layers: sand = 1:2, and the soil in different soil layers has better cushioning properties. 3. During the period from 8:00 to 20:00, with the change of measurement time, the trend of ground temperature change can be fitted by the polynomial equation y=ax2+bx+c, which is most obvious with 5cm soil layer, with soil layer As the depth increases, the slope of the polynomial curve gradually decreases. 4. In the soil of 9 years of compounding, the time when the sandstone of sandstone: 1:1 soil reached its peak was postponed from 14:00 to 16:00, and the peak of loess: sand = 1:1 the original 16:00 point was delayed until 18:00, and the time when other compounded soils reached their peak was 16:00.