Review of visualisation methods of studying the seepage mechanism in fractured rocks
Review of visualisation methods of studying the seepage mechanism in fractured rocks
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DOI：
10.1007/s40948-021-00303-z
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发表时间：
2021-10
影响因子：
5
通讯作者：
Lei He;Huaiguang Xiao;Ying Cui;Song Liu;Jian Chen
中科院分区：
文献类型：
--
作者：
Lei He;Huaiguang Xiao;Ying Cui;Song Liu;Jian Chen
摘要准确测量裂缝结构和流体流动特征参数是理解复杂裂缝系统渗流机理的必要前提。本文从可视化的角度论述了真实岩石、透明岩石和数字岩石渗流试验特征参数的研究进展。首先，综述了不考虑裂缝的岩石渗透率测量、单裂缝渗流实验、复杂裂缝结构表征和渗流实验辅助可视化等方面的研究进展。其次，总结了透明岩石的制备方法和透明岩石中流体流动过程的测量方法。第三，综述了复杂裂隙岩体的数字建模方法和裂隙渗流试验的数值模拟方法。最后，提出了利用目测方法揭示复杂裂缝体系渗流机理的建议。准确描述裂缝形态和裂缝内流体流动特征是揭示裂隙岩体渗流机理的前提。真实岩石、透明岩石和数字岩石的可视化可以通过不同的方式获得裂缝形态和流体流动特征参数。透明岩石流体流动特征参数的获取方法是了解复杂裂缝中流体流动规律的一个难点和关键点。
AbstractThe accurate measurement of characteristic parameters of fracture structures and fluid flow is an essential prerequisite for understanding the seepage mechanism of complex fracture systems. This paper discusses the research progress on the characteristic parameters measured in seepage tests of the real rock, the transparent rock and the digital rock from the perspective of visualisation. Firstly, the studies on the measurement of rock permeability without considering fractures, the seepage experiment with single fractures, the characterisation of complex fracture structures and the auxiliary visualisation of seepage experiments are reviewed. Secondly, the preparation method of transparent rocks and the measuring method of the fluid flow process in transparent rocks are summarised. Thirdly, digital modelling methods for complex fractured rocks and numerical simulation methods for seepage tests in fractures are reviewed. Finally, this paper proposes recommendations for revealing the seepage mechanism of complex fracture systems through the visual measurement method.Article HighlightsAccurate descriptions of fracture morphologies and fluid flow characteristics in fractures are the premise to reveal the seepage mechanism of fractured rocks.The visualisation of real rocks, transparent rocks and digital rocks can obtain fracture morphologies and fluid flow characteristic parameters in different ways.The acquisition method of fluid flow characteristic parameters in transparent rock is a challenging and critical point to understand fluid flow law in complex fractures.