Testing system for simulating coal seam floor water bursting influenced by mining

Abstract

The invention discloses a testing system for simulating coal seam floor water bursting influenced by mining. The testing system comprises a simulation testing device, an operating control console and a water pressure control device, the operating control console is connected with the simulation testing device and the water pressure control device through 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 testing system, the testing table with the good leakproofness is arranged in the middle of the outer frame, a testing sample is placed in the testing table, longitudinal stress and transversal stress are exerted, a coal seam is excavated to collect related data, the changes of the high water pressure and the floor lithological characteristics and the whole floor water bursting process are simulated, and then the related data of floor water bursting is obtained; the safety of coal mining operation is improved when the testing system is applied to production operation. The testing system has the advantages that operation is easy, the leakproofness is good, the automation degree is high, and a testing result is precise and better approaches to the actuality.

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 test system for simulating water inrush from 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 ...

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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