Test device for fluid-structure interaction similarity simulation

Abstract

The invention discloses a fluid-structure interaction analog simulation test device, which comprises a rack, a simulation box body, a vertical direction hydraulic loading system and a horizontal direction hydraulic loading system, wherein the rack comprises a base, an upright post, a cross beam and a guide rail; the base is glidingly arranged on the guide rail through the lower surface; the vertical direction hydraulic loading system comprises a first telescopic pressurization device and an upper pressurizing plate; the first telescopic pressurization device performs vertical pressure loading on the simulation box body through the upper pressurization plate; the horizontal direction hydraulic loading system comprises a second telescopic pressurization device, a pressure resistant plate and a lateral pressurization plate; the pressure resistant plate and the side pressurization plate are respectively arranged at the two ends of the second telescopic pressurization device; the second telescopic pressurization device performs the lateral pressure loading on the simulation box body through the butt joint with the simulation box body through the lateral pressurization plate. The test device has the advantages that the horizontal hydraulic loading is modularized; each module can realize the single pressure control; the precise pressure regulation is realized; the top vertical pressurization is controllable; different depth load of the stratum is simulated; non-uniform pressure can be exerted.

Description

technical field [0001] The invention relates to the field of coal mining, in particular to a test device for similar simulation of fluid-solid coupling. Background technique [0002] In the prior art, a rigid two-dimensional plane model is used to conduct fluid-solid coupling similar simulation experiments on a series of phenomena such as overburden migration in efficient mining and potential risks of water inrush and sand collapse in the roof aquifer. [0003] The two-dimensional planar model cannot truly reflect the three-dimensional three-dimensional spatial layer relationship of underground mining; the pure solid material similar simulation cannot realize the simulation of water disasters in coal mining processes such as solid-liquid coupling, aquifer water inrush and sand collapse, and development of water-conducting fracture zones in overlying rocks. ; The existing similar simulation test bench is a two-dimensional plane model, which is incapable of applying lateral pr...

AI Technical Summary

Problems solved by technology

[0003] The two-dimensional planar model cannot truly reflect the three-dimensional three-dimensional spatial layer relationship of underground mining; the pure solid material similar simulation cannot realize the simulation of water disasters in coal mining processes such as solid-liquid coupling, aquifer water inrush and sand collapse, and development of water-conducting fracture zones in overlying rocks. ; The existing similar simulation test bench is a two-dimensional plane model, which is incapable of applying lateral pressure, roadway excavation and support, and wellbore excavation stress field simulation.

[0004] In addition, the airtightness of the existing two-dimensional plane model is not good, and the aquifer simulation cannot be accurately realized; the macroscopic visibility of rock formation migration during the simulation process is poor, and the accuracy of microscopic data collection is low; the fluid cannot follow the mining process. The fracture flow formed in the water; the water pressure and water volume in the aquifer and the aqueduct cannot be regulated and monitored in time

Images