A device and method for responding to roadway surrounding rock under dynamic load of hinged rock beams

Abstract

The invention relates to a surrounding rock response device and method of a roadway under dynamic load of a hinged rock beam, mainly comprising: a combined test box, a surrounding rock layered simulation system, a loading system and a monitoring system, wherein the combined test box is a detachable, transparent cuboid ;The surrounding rock layered simulation system is to simulate the hinged rock beam by the hinged blocks A and B, and to simulate the surrounding rock of the roadway by the concrete of different proportions; The loading system consists of hydraulic pipelines, safety valves, pressure indicators, high pressure micro-deformation airbags, low pressure The deformation airbag is composed of the airbag, and the airbag is deformed with the pressure change; the monitoring system is composed of a pressure monitor and a displacement gauge. The device can realize partition loading, subsidence and rotation of hinged rock beams, and the position of hinge points can be adjusted. It can monitor and feedback the dynamic pressure change law of roadway surrounding rock, damage position and degree, and gangue collapse under dynamic loading of hinged rock beams. Bearing capacity and volume change law, the device can be recycled and has important value.

Description

technical field [0001] The invention relates to the field of roadway surrounding rock, in particular to a roadway surrounding rock response device and method under dynamic loading of hinged rock beams. Background technique [0002] In coal mining, with the continuous development and improvement of comprehensive mechanized mining, the roadway is often in a complex geological environment, affected by strong mining and stope pressure, the basic roof in the overburden layer of the roadway will form a hinged rock beam structure , the existing equipment needs to achieve on-site real-time monitoring, the procedure is complex, the monitoring equipment and monitoring costs are high, the monitoring process is time-consuming and labor-intensive, and takes up a lot of space. However, the subsidence and rotary movement of the hinged rock beams have a severe destructive effect on the surrounding rock of the roadway, such as the destruction of the coal side, the roadside support body, the ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the subsidence and rotary motion of the hinged rock beams have a severe destructive effect on the surrounding rock of the roadway. The pressure change law, bearing capacity, damage location and degree cannot be scientifically and effectively understood. A device and method for responding to the surrounding rock of the roadway under the dynamic load of the hinged rock beam are now provided.

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