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为掌握孔隙介质级配和均匀性对水源热泵回灌过程中堵塞的影响,通过室内回灌试验测定了不同级配试样回灌渗透能力,利用颗粒级配分形维数分析了试样级配和不均匀性与回灌渗透性能的相关关系。结果表明级配分形维数D与不均匀系数的对数(lnC u)之间呈负相关,与渗透系数和孔隙度n则呈正相关。从而为不同水文地质条件地区水源热泵工程的适宜性分析,回灌堵塞机理的分析以及防止水源热泵工程堵塞技术的选择提供了一定的科学依据。
In order to understand the influence of pore medium gradation and homogeneity on plugging during water source heat pump recharging, the recharge ability of different gradation samples was determined by indoor recharge experiment. The sample gradation And the relationship between inhomogeneity and recharge permeability. The results show that there is a negative correlation between the graded fractal dimension D and the logarithm of the inhomogeneous coefficient (lnCu), and positively correlated with the permeability coefficient and the porosity n. This provides a scientific basis for the suitability analysis of water source heat pump project in different hydrogeological conditions, the analysis of recharge plugging mechanism and the selection of blocking technology in water source heat pump project.