3D (Three-Dimensional) fractured network rock mass two-phase medium seepage test device under stress action

Abstract

The invention discloses a 3D (Three-Dimensional) fractured network rock mass two-phase medium seepage test device under stress action. The 3D fractured network rock mass two-phase medium seepage testdevice comprises a test platform, a liquid-gas loading device and a liquid-gas separating and collecting device, wherein a fixed boundary and a movable loading boundary are arranged at the edges of the test platform; a plurality of small holes are formed in one side surface, which is fitted with a 3D fractured rock test sample, of the movable loading boundary, and the other side surface of the movable loading boundary is connected with the liquid-gas loading device; a strip-shaped hole is formed in one side surface, which is fitted with the 3D fractured rock test sample, of the fixed boundary,and the other side surface of the fixed boundary is connected with the liquid-gas separating and collecting device; high-strength transparent glass is arranged above the 3D fractured rock test sample; sealing space is formed by the high-strength transparent glass, a limiting frame and the test platform; a 3D camera is arranged above the high-strength transparent glass. The 3D fractured network rock mass two-phase medium seepage test device disclosed by the invention has the characteristics of simpleness and convenience in operation, low cost, visualization, high accuracy degree and the like,and has a wide application prospect in a fractured rock mass multi-phase medium seepage test research.

Description

technical field [0001] The invention relates to a rock mechanics test device, in particular to the field of physical model test of gas-liquid two-phase medium seepage in three-dimensional fracture network rock mass, in particular to a three-dimensional fracture network rock mass two-phase medium seepage test device under the action of stress. Background technique [0002] There are a large number of discontinuities / cracks in natural rock mass, and the existence of these discontinuous surfaces provides channels for the migration of liquid and gas media in the rock mass. For dams and slope projects, the seepage of confined groundwater in discontinuous surfaces in the form of seepage pressure or head pressure is an important cause of the instability of slope projects; for underground oil storage and nuclear power plant foundations, oil or Harmful pollutants such as nuclear substances are easily migrated and diffused through discontinuous surfaces in the rock mass, thus causing ...

AI Technical Summary

Problems solved by technology

At present, the existing patents and papers are generally researched on a single medium, and most of them focus on the medium of liquid, thus ignoring the influence of gas medium in it; on the other hand, the stress state of natural fractured rock mass is generally different. To the unequal pressure state, the devices published in the existing patents and papers are rarely able to simulate this stress state

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