Three-dimensional pore structure model and method for fabricating the same, experiment system and transparent experiment method for replicating fluid displacement process within rock pore structure

摘要

#$%^&*AU2018444642A120200521.pdf#####ABSTRACT A pore structure three-dimensional model (101) and a method for fabricating the same, an experiment system and a transparent experiment method for replicating fluid displacement process within a pore structure of a natural rock mass are provided. A structure image of the natural rock mass is acquired by using computed tomography scan technology or imaging technology. The structure image includes pore structure information of the natural rock mass. By using an image processing method, the pore structure information in the structure image is extracted and a digital structure model corresponding to the natural rock mass is reconstructed. Based on the digital structure model, a transparent and visible three-dimensional pore structure model (101) is printed by using 3D printing technology, such that a pore structure (1011a) inside the natural rock mass is visible. Therefore, flow phenomenon of fluid when performing displacement-seepage inside the rock mass can be observed in a process of experiment. Images of seepage can be rapidly captured by a camera (1051) outside the model. Further, temperature, flow rate, and pressure of components can be accurately controlled, to achieve accurate replication in various experiment conditions, so as to visually display an immiscible displacement-seepage whole process occurs in a complex pore structure inside the natural rock mass and quantitatively analyze distribution features of a seepage field and a speed field of immiscible displacement.