System and method for testing fractal seepage in single fracture by 3D printing under multiple testing condition coupling effect

Abstract

The invention provides a system and method for testing fractal seepage in single fracture by 3D printing under a multiple testing condition coupling effect, and belongs to the field of geotechnical engineering. The system comprises a water head device, a testing main body device, an electronic monitor device and a circulation device, wherein the testing main body device comprises a hollow runner groove; a 3D printing physical model with a rough fracture parallel plate is arranged in the hollow runner groove, and comprises a first part on the left side and a second part on the right part; a fracture is reserved between the first part and the second part, the width of the fracture between the first part and the second part is changed by virtue of an adjusting screw, and a detachable glass cover plate is arranged on the hollow runner groove; the electronic monitor device comprises an intelligent regulation host machine, a pressure sensing vane and a water level monitor arranged above a water tank; the pressure sensing vane and the water level monitor are respectively connected with the intelligent regulation host machine; the pressure sensing vane is arranged at a permeable hole for monitoring the current state of seepage in real time, and is applicable to researches for testing seepage in a single fracture.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering, and relates to a 3D printing fractal single-crack seepage experimental system and an experimental method under the coupling action of multiple test conditions. Background technique [0002] Most of the rock mass medium in nature is buried deep underground, and its occurrence environment is complex and changeable, and there are a large number of fractures with different occurrences, properties, and scales. , geological engineering, mining and unconventional natural gas exploitation engineering and other fields of high concern. A single rough fracture is the basic unit that composes the natural fractured body structure of rock mass, and its seepage law is the basis for describing the seepage mechanism of fractured rock mass. Under the existing theoretical methods and technical conditions, it is very difficult to accurately measure and know the complex fracture structure inside the rock mass...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the experimental equipment in the prior art that cannot simply and quickly adjust the fractal dimension of rough cracks, crack width and pressure head, etc., and provide an environmentally friendly and intelligent technology that can change multiple variables to study 3D printing fractal single-fracture seepage experimental system and experimental method under the coupling effect of multiple test conditions for water seepage in parallel fractures

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