Assessing the Impacts of Land Use and Land Abandonment on Soil Thermal Properties: A Case Study of Dumpsite and Cement Block Making Site
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Information about soil thermal properties (STP ) based on different land-use patterns will assists in optimum S utilization of ground-based thermal energy. The status of soil thermal properties (STPs) in two different land uses (Dumpsite (DS) and Cement-block making site (BMS) in their active and abandoned states is presented in this study. Five sampling points within 100 m by 50 m were established on each land use where in-situ measurements of STPs were carried out using KD2 Pro thermal properties analyzer. The STPs of interest are thermal conductivity (λ ), s thermal resistivity (TR), specific heat capacity (C ), thermal diffusivity (TD), temperature and thermal admittance s s (μ ). Analysis of variance (ANOVA) was used to study the variations of measured STPs based on land use and land abandonment. The results of STPs revealed that mean λ in active DS was quadruple its value in abandoned DS while s λ value in active BMS was twice its value in abandoned BMS. The average C value in active DS (3.928 MJ/m K) was s 3 s approximately 2.5 times its value in abandoned DS while there is no significant difference in mean C recorded at both s active and abandoned BMS. The soils under active DS were characterized by maximum values of λ , C , and μ while s s s abandoned BMS records lowest values of mean λ and TD. Near surface soil under active BMS had lowest average s 3 s s 2 values of C and μ (1.489 MJ/m K and 1.709 mm /s, respectively) among the studied land uses. The mean TR in active 0 DS was <90 C-cm/w and the least among the investigated land uses, suggesting its suitability for cable engineering practices. The results of ANOVA show soil temperature as the only STP that is not significantly different based on activity and abandonment of each land use pattern.
Publication Info:
Author: Ganiyu, S.A., Olurin, O.T. and Shobowale, O.A.
Volume: 57
Issue: September
Published By: Journal of Mining and Geology, 2024-09-01