Mining-affected coal seam floor water inrush simulation testing system

Abstract

A mining-affected coal seam floor water inrush simulation testing system comprises a simulation testing device, an operating console and a water pressure control device. The operating console is connected with the simulation testing device and the water pressure control device through control cables respectively, the water pressure control device is connected with the simulation testing device through a water inlet pipe, and the simulation testing device comprises an outer frame and a testing table arranged in the outer frame. According to the mining-affected coal seam floor water inrush simulation testing system, the testing table which is good in sealing property is arranged in the middle of the outer frame, a test sample is put on the testing table, longitudinal stress and transverse stress are applied, a coal seam is excavated to collect relevant data, the changes of the high water pressure and the floor lithological character and the overall floor water inrush process are simulated, and therefore the relevant data of floor water inrush is obtained and applied to production operation, and the safety of coal-mining operation is improved. According to the mining-affected coal seam floor water inrush simulation testing system, operation is easy, the sealing property is good, the automation degree is high, and the testing result is precise and more close to practice.

Description

technical field [0001] The invention belongs to the technical field of water inrush test in coal mine safety production, and in particular relates to a water inrush simulation test system for a coal seam floor affected by mining. Background technique [0002] Water inrush in coal mines has always been the focus of attention of coal mine workers. Frequent water inrush accidents have brought great losses to people's lives and property. With the in-depth research of various simulation software such as FLAC-3D, ParticleFlowCode, Ansys and other numerical methods in recent years, the mechanism research on the water inrush problem of the coal seam floor has also become more diverse, and the seepage field of the rock mass before the water inrush, Some results have been achieved in terms of stress field and so on. However, due to the complexity of floor fault water inrush disasters, especially the many inducing factors of deep well mining, it is difficult to analyze and study only ...

AI Technical Summary

Problems solved by technology

The investment cost of this kind of system is high, and the system frequently starts and stops the water supply pump according to the water supply pressure during operation. On the one hand, it consumes electric energy.

On the other hand, frequent start and stop of the make-up pump will cause instantaneous pressure instability

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