A flower-shaped thin-wall energy-absorbing anti-scour support device

Abstract

The invention discloses a flower-shape thin-wall energy-absorption erosion-prevention shoring device, and belongs to the technical field of safe shoring of a coal mine. The flower-shape thin-wall energy-absorption erosion-prevention shoring device comprises a top cover, a supporting barrel and a base, wherein a first boss is arranged in the center of the lower end surface of the top cover, the first boss is of a columnar structure, the cross section of the first boss is of a flower-shaped structure, the supporting barrel is of a straight barrel-shaped structure, and the cross section of the supporting barrel is of a flower-shaped structure. A second boss is arranged in the center of the upper end surface of the base and is of a cone structure, the cross section of the top end of the cone structure is of a flower-shaped structure, the cross section of the bottom end of the cone structure is of a round structure, and the top end of the cone structure and the bottom end of the cone structure adopt smooth gradual transition, the top cover is connected with the upper end of the supporting barrel through the first boss, the lower end of the supporting barrel is connected with the base through the second boss, and the flower-shaped structure of the first boss of the top cover, the flower-shaped structure of the supporting barrel and the flower-shaped structure of the top end of the cone structure of the second boss of the base are the same.

Description

technical field [0001] The invention belongs to the technical field of coal mine safety support, in particular to a flower-shaped thin-walled energy-absorbing anti-scour support device. Background technique [0002] Rock burst is one of the major dynamic disasters in coal mines, and it is also a worldwide mining problem. With the continuous increase of coal mine mining depth and mining intensity, the occurrence frequency and damage degree of rock burst are becoming more and more intense. When pressure occurs, a large amount of impact energy in the rock mass will be released instantaneously, which usually causes the roadway with tens of meters to hundreds of meters to burst into pieces, roof collapse or bottom heaving, thus causing serious damage to the support body and causing the support body to collapse. The failure of the roadway and the overturning of the equipment in the roadway are likely to cause heavy casualties, seriously affecting the life safety of the personnel a...

AI Technical Summary

Problems solved by technology

As the mining depth of the coal seam continues to increase, the ground stress will also increase accordingly, and the probability of rock burst will become higher and higher. At this time, the method of strengthening the strength of the support body is usually adopted to deal with it, but the resulting Yes, it will lead to excessive rigidity of the support body, which will cause the surrounding rock to directly act on the support body under the impact disturbance. It can resist small impact force fashion, but in the face of large impact force, it will often lead to serious consequences, such as serious deformation of the support body, collapse of surrounding rock, blockage of roadway, etc.

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