Roadway support system anti-impact character testing device and method under rockburst simulating condition

Abstract

The invention provides a roadway support system anti-impact character testing device and method under the rockburst simulating condition. A main frame and an anchor rod are included. The main frame isprovided with a lifting motor. The lifting motor is connected with an impact beam. The impact beam is provided with stand columns. The stand columns are provided with a surface support installing frame. A surface support component is arranged in the surface support installing frame. The anchor rod is anchored in an upper-section steel pipe and a lower-section steel pipe. The upper-section steel pipe and the lower-section steel pipe are provided with an upper flange and a lower flange. The upper flange is arranged on the impact beam, and a pressure sensor is arranged between the upper flange and the impact beam. The surface support component is provided with balance weight blocks, part of the balance weight blocks are borne on the surface support component, part of the balance weight blocks are borne on the lower flange, and a pressure sensor and a tray are arranged between a nut and the surface support component. An acceleration sensor is arranged below the surface support component and on the impact beam. Hydraulic buffers are arranged below the two sides of the impact beam, and a camera is arranged below the middle portion of the impact beam. The roadway support system anti-impact character testing device and method under the rockburst simulating condition are provided.

Description

technical field [0001] The invention relates to the technical field of rock and soil testing equipment, in particular to a device and method for testing the impact resistance characteristics of a roadway support system under simulated rockburst conditions. Background technique [0002] With the continuous depletion of shallow resources, the depth of underground mining continues to increase, and the stress of the surrounding rock is also increasing. Compared with the shallow part, the deep roadway has a significant large deformation feature, except that it rebounds immediately after the rock mass is removed. It is also related to the rheology of the rock mass material itself under high stress and the long-term creep of discontinuous surfaces (joints, bedding, etc.). The more likely it is to break and release energy. Therefore, the deep roadway support system not only needs to have high support resistance, but also has good deformation ability. Not only must it be able to ad...

AI Technical Summary

Problems solved by technology

[0003] In view of the fact that there is still a lack of effective test devices for the impact deformation capability of the roadway support system under the condition of large dynamic load and large deformation, the existing test devices are only for testing a support structure, such as testing the tensile strength of the anchor separately, and separately Test surface support components, etc., but as long as one link of the support system is damaged, the entire support system will become a safety hazard. Therefore, it is necessary to fully simulate the impact resistance of the roadway support system under the condition of deep rockburst. Failure characteristics, to better study the impact resistance and failure characteristics of roadway support systems under deep rockburst conditions, and provide a theoretical basis for rockburst support design and failure control

Images