Testing method of fluid-structure interaction analog simulation testing device

Abstract

The invention discloses a testing method of a fluid-structure interaction analog simulation testing device. The testing method includes steps of firstly, filling a simulated stratum material in a simulated box body according to the lamellar distribution; filling water by a water filling device and simulating the water-containing layer; then horizontally pressurizing both sides of the simulation box body by a horizontal hydraulic loading system so as to simulate the confining pressure; at last, performing vertical pressure loading on the simulated box body by a vertical directional hydraulic loading system so as to simulate loads with different depths. The testing method of the fluid-structure interaction analog simulation testing device can be adapted to different experimental demands. The testing method can realize accurate pressure adjusting, simulate loads with different depths of the stratum, an apply uneven pressure.

Description

technical field [0001] The invention relates to the field of coal mining, in particular to a test method for a fluid-solid coupling similar simulation test device. 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...

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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

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