Geomechanics test platform for water invasion regularity of mine

Abstract

The invention discloses a geomechanics test platform for the water invasion regularity of a mine, which comprises a base, a box body, a reaction frame, a pressurized jack, a hydraulic control system and a data acquisition system and the like. When simulating the water invasion of the mine, test material is paved in the box body according to a calculated similarity ratio; an electrode, a stress sensor and a pore water pressure sensor are paved on a coal seam bottom plate by layers; and a data cable is led out from a pore preserved on a side surface. By filling water into the paved test material through the bottom plate of the box body, when the water in an aquifer is saturated, a pore preserved for coal mining in the front of the box body is opened for excavation, simultaneously, the hydraulic control system continue to fill water according to the pre-calculated water pressure, and the data acquisition system is started to record the test data until water invasion occurs at the bottom plate, and then excavation is stopped and the test is ended. The system structure is simple, can effectively simulate the water invasion regularity of the mine, and solves the problems that the indoor test can not simulate the role of seepage and erosion of confined water.

Description

technical field [0001] The invention relates to a mine water inrush law experiment device, in particular to a mine water inrush law geomechanics test platform. Background technique [0002] Due to the particularity of mine water inrush, it is impossible for people to observe the destruction process of water inrush on site. In the prior art, similar water inrush simulation tests are generally carried out in a laboratory. [0003] There are at least the following disadvantages in the above-mentioned prior art: [0004] The model test basically adopts the plane stress model, which is not only difficult to meet the boundary conditions, but also uses other forces instead when simulating water pressure, which cannot reflect the characteristics of confined water, nor can it reflect the seepage and scour performance of water. Contents of the invention [0005] The object of the present invention is to provide a geomechanical test platform for mine water inrush law, which can mon...

AI Technical Summary

Problems solved by technology

[0004] The model test basically adopts the plane stress model, which is not only difficult to satisfy the boundary conditions, but also uses other forces instead when simulating water pressure, which cannot reflect the characteristics of confined water, nor can it reflect the seepage and scour performance of water

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