A mining damage simulation test device for the bottom plate of mine working face

Abstract

The invention belongs to the technical field of failure simulation test equipment for a coal mine working face floor, and relates to a mining failure simulation test device for a mine working face floor. Lateral loading fixers fixedly connected with lateral fixing plates are arranged at the two ends of a platform base; stress monitoring points are uniformly distributed on a tested rock mass at same depth in the horizontal direction; the stress monitoring points are connected with a stress acquisition system; an unloading and loading plate is fixedly installed at the upper end of the tested rock mass; detachable side edges are respectively installed on the two sides of the unloading and loading plate; a hydraulic servo unloading and loading unit is arranged between a top loading body and the unloading and loading plate; a main hydraulic servo loader is installed at the upper part of the top loading body; the main hydraulic servo loader is communicated with a top hydraulic pipeline; a hydraulic control servo system is connected with the main hydraulic servo loader, the hydraulic servo unloading and loading unit and the lateral loading fixer respectively. The mining failure simulation test device for the mine working face floor is simple in structure, scientific in principle, convenient to maintain, accurate in monitored data and convenient to operate.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of damage simulation test equipment for bottom plates of coal mine working faces, and relates to a mining damage simulation test device for bottom plates of mine working faces. [0003] Background technique: [0004] At present, with the continuous deepening of coal seam mining, the geological structure and hydrogeology are becoming more and more complex, and the depth of damage to the floor caused by mine pressure and mining stress is increasing. Mining water inrush has increasingly become a major threat to mine water hazards. China began to study the law of floor water inrush in the 1960s. At that time, it noticed the application of the theory of relative aquitards in Hungary. During the war, represented by the Xi’an Exploration Branch of the General Academy of Coal Science and Technology, it was proposed to use the water inrush coefficient as the standard for predicting whether the floor water inru...

AI Technical Summary

Problems solved by technology

Therefore, in combination with the current status of coal mining technology, a mining failure simulation test device for the floor of the mine working face is developed, which can simulate the mining failure behavior of the floor, combining rock mechanics tests, damage-fracture mechanics theory, and numerical simulation calculations. and other means to reveal the mining damage mechanism of the floor and solve the current problem of water inrush on the floor damaged by mining

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