Portable and detachable pillar stability and bottom plate load transfer simulation device

Abstract

The invention provides a portable and detachable pillar stability and bottom plate load transfer simulation device, and belongs to the technical field of pillar stability and bottom plate load transfer simulation devices. The device includes a top pressure loading part, side pressure loading parts, a bottom supporting part and a baffle plate. The top pressure loading part includes a top beam, a pressure head, hydraulic pumps, and an upper bearing plate and two upper pressing plates for pressing against the top of a rock simulator. The number of the side pressure loading parts is two, and the side pressure loading parts are equidistantly arranged on the two sides of the pressure head. Each side pressure loading part includes a side beam, side bearing plates, side pressure plates, side pressure applying bolts, screw rods and springs. The bottom supporting part includes a bottom beam arranged opposite to the top beam. The baffle plate is connected to the front side and the back side of each side beam through connecting pieces. The device can portably and detachably achieve servo loading and constant pressure loading of different parts of the upper part of the rock simulator and side pressure loading and upper and lateral co-loading of the rock simulator.

Description

technical field [0001] The invention relates to the technical field of a simulation device for pillar stability and floor load transfer, in particular to a portable and detachable pillar stability and floor load transfer simulation device. Background technique [0002] For mining, the retention of ore pillars is inevitable. There are a large number of ore pillars in mines all over the world, and the instability of these ore pillars will cause the sudden collapse of the surface, resulting in the loss and casualty of surface structures and personnel. In addition, the existence of ore pillars has caused great troubles to the mining of the lower ore body (coal seam), and the clarification of the floor load transfer law has a decisive role in the formulation of roadway layout and mine pressure control measures for the lower ore body (coal seam). Therefore, the study of pillar stability and floor load transfer is of great significance. [0003] In order to control mine pressure ...

AI Technical Summary

Problems solved by technology

[0005] ① The loading method cannot be precisely controlled. The top pressure loading of the traditional similar simulation test bench can only be loaded by the servo control method as a whole, and cannot be loaded separately for each part;

[0006] ②The cost of manufacture and use is too high. The size and specifications of the two-dimensional plane physical simulation experiment racks currently used are generally large, and the model making is time-consuming and labor-intensive, and takes up a lot of space;

[0007] ③Existing devices are fixed on the ground, difficult to disassemble and transport

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