洪勃, 李喜安, 王力, 李林翠. 2018: 毛细管渗流模型在黄土渗透性中的应用探讨. 工程地质学报, 26(5): 1250-1256. DOI: 10.13544/j.cnki.jeg.2018023
    引用本文: 洪勃, 李喜安, 王力, 李林翠. 2018: 毛细管渗流模型在黄土渗透性中的应用探讨. 工程地质学报, 26(5): 1250-1256. DOI: 10.13544/j.cnki.jeg.2018023
    HONG Bo, LI Xi'an, WANG Li, LI Lincui. 2018: DISCUSSION ON APPLICABILITY OF CAPILLARY SEEPAGE MODELS TO LOESS PERMEABILITY. JOURNAL OF ENGINEERING GEOLOGY, 26(5): 1250-1256. DOI: 10.13544/j.cnki.jeg.2018023
    Citation: HONG Bo, LI Xi'an, WANG Li, LI Lincui. 2018: DISCUSSION ON APPLICABILITY OF CAPILLARY SEEPAGE MODELS TO LOESS PERMEABILITY. JOURNAL OF ENGINEERING GEOLOGY, 26(5): 1250-1256. DOI: 10.13544/j.cnki.jeg.2018023

    毛细管渗流模型在黄土渗透性中的应用探讨

    DISCUSSION ON APPLICABILITY OF CAPILLARY SEEPAGE MODELS TO LOESS PERMEABILITY

    • 摘要: 黄土作为一种典型的多孔介质,多孔性是其重要特性之一。多孔性不仅影响着黄土的物理力学及化学特征,也严重影响着黄土的水理性质,特别是黄土的渗透特性。然而,作为多孔介质渗流理论的经典模型——毛细管模型,已经广泛应用于油气田开采、煤成气开采以及岩土工程等领域,但将多孔介质渗流理论模型引入表征黄土的多孔构造,这方面的资料尚欠缺。因此,本文以黄土的渗透性作为研究示例,在总结分析目前相对较为成功的多孔介质毛细管渗流模型的基础上,选取适于定量表征黄土渗透性的渗流模型,结合计算结果和渗透试验结果的对比,探讨将多孔介质毛细管渗流模型引入描述黄土渗透性这一方法的适用性。并提出孔隙的“香肠”构造(或称为“莲藕”构造),为黄土的渗透性研究提供可借鉴的理论依据。

       

      Abstract: As a typical porous medium, loess has its porosity as one of its most notable characteristics. Porosity not only influences the physical and chemical characteristics of loess, but also seriously affects the hydraulic properties of loess, especially the permeability of loess. The capillary model and the classic model of porous media seepage theory have been widely used in the fields of oil and gas field mining, coal-formed gas mining and geotechnical engineering. The porous media seepage theory model is less used in the porous structure of loess. Therefore, this paper takes the permeability of loess as an example. This paper summarizes and analyzes the relatively successful porous media capillary seepage models. It selects the seepage model suitable for quantitative characterization of the permeability of loess. It discusses the capillary seepage model of porous medium. The discussions are combined with the comparison of the results of calculation and the results of the permeation test. The applicability of this method to describe loess permeability is examined. The "sausage" structure of pore(or "lotus root" structure) is proposed. The study provides a new theoretical basis for the study of loess permeability.

       

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