Roadway surrounding rock response device and method under hinged rock beam dynamic load

Abstract

The invention relates to a roadway surrounding rock response device and method under a hinged rock beam dynamic load, and the device mainly comprises a combined test box, a surrounding rock layering simulation system, a loading system, and a monitoring system, the surrounding rock layering simulation system simulates a hinged rock beam through hinged blocks A and B, and simulates roadway surrounding rock through concrete of different proportions. The loading system is composed of a hydraulic pipeline, a safety valve, a pressure displayer, a high-pressure micro-deformation air bag and a low-pressure deformation air bag, and the air bags deform along with pressure changes. The monitoring system is composed of a pressure monitoring meter and a displacement meter. The device can achieve partitioned loading and sinking and rotation of the hinged rock beam, the position of the hinged point can be regulated and controlled, the dynamic pressure change rule, the damage position and degree and the caving gangue bearing capacity and volume change rule of roadway surrounding rock under the dynamic load of the hinged rock beam can be monitored and fed back, and 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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