Pressure-adjustable high-precision solid-liquid coupling physical similar material simulation device

Abstract

The invention discloses a pressure-adjustable high-precision solid-liquid coupling physical similar material simulation device. A water outlet hose is slidably mounted in a model, so that the height of a water-bearing layer is freely adjusted; and through a telescopic structure of the upper supporting legs and the lower supporting legs, free adjustment of the water supply pressure of the water-bearing layer is achieved. According to the simulation device, the height of the water-bearing layer and the water supply pressure of thewater-bearing layer of the solid-liquid coupling physical similar material simulation experiment device can be adjusted, and the actual mining height is accurately simulated by utilizing the simulation device of the model, so that the simulation effect is ensured, the application range of gob-side entry retaining is widened, and a method can be better provided for water-preserved mining research under thick coal seams and multiple coal seams; the device is easy to operate, convenient to use and wide in application range; and the application range of the solid-liquid coupling experiment can be widened, and the water retention problem in the mining process of thick coal seams and multiple coal seams can be researched.

Description

technical field [0001] The invention belongs to the technical field of mine engineering, and in particular relates to a pressure-adjustable high-precision solid-liquid coupling physical similar material simulation device. Background technique [0002] With the massive mining and use of coal resources, there is a huge pressure on the ecological environment. For example, in the Jurassic coalfield in northern Shaanxi, the coal seam was buried shallowly, thickly, and with many layers, which made the groundwater dredging very serious after coal resource mining, especially posing a serious threat or even damage to the ecological aquifer of the underground Salawusu Formation. [0003] Groundwater resources are precious life resources. Once damaged, it may take decades or even hundreds of years to recover, which is devastating to the local ecological environment. Therefore, sufficient research needs to be done before the aquifer is destroyed, so as to better protect groundwater res...

AI Technical Summary

Problems solved by technology

[0005] 1. Most physical similar simulation model frames cannot be used for solid-liquid coupling experiments;

[0006] 2. The existing solid-liquid physical similar material model frame cannot adjust the water supply height according to the height of the aquifer;

[0007] 3. The existing solid-liquid physical similar material model frame cannot adjust the water supply pressure;

[0008] 4. The existing solid-liquid physical similar material model frame cannot effectively and intuitively monitor the flow rate and flow rate, and cannot be prepared to judge the form of water loss during the experiment;

[0009] 5. During the simulated mining process, roof materials often leak out, which in disguise causes the simulated mining height to be greater than the actual mining height

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