Collapsible structure of roadway bracket for anti-shock ground pressure steel structure

Abstract

The shrinkable structure of the roadway support of the anti-shock ground pressure steel structure includes a curved structure and a straight line structure. Both the curved structure and the straight line structure are the first connecting pipe and the second connecting pipe. Arc, the first connecting pipe and the second connecting pipe in the straight line structure are straight lines; the shapes of the first connecting pipe and the second connecting pipe are rectangular or circular, and the transverse sections of the first connecting pipe and the second connecting pipe are respectively There are opposite left and right sides and opposite upper and lower sides. The first connecting pipe includes the first connecting pipe body, the middle section and the wrapping section which are integrally connected in sequence; when the first connecting pipe and the second connecting pipe are arc-shaped, the middle section Called the arc section, the present invention is a roadway support with a shrinkable structure, and its shrinkage is set according to the pressure value of the roadway. Through the shrinkage of the shrinkable structure, the partial or overall shrinkage of the whole support can be realized, and the pressure of all sides of the roadway can be relieved and absorbed.

Description

technical field [0001] The invention relates to the field of mine support equipment, in particular to a tunnel support retractable structure used in deep wells, tunnels with rock bursts, and large-section tunnels. Background technique [0002] With the long-term rapid growth of the global economy, especially the domestic economy, a large amount of coal and various mineral deposits buried in the shallow strata have been exploited, so the mine mining gradually extends to the depth of the stratum below 800 or 1000 meters. With the increase of roadway support problems such as deep wells, rock bursts, and large sections, etc. have appeared. [0003] At present, the main roadway support used for mine roadway support is made of various types of U-shaped steel, I-beam, channel steel and other profiles, including a new type of support, the name is poured concrete-filled steel pipe support ( Partial mine use in 2014). [0004] Because they are all made of profiles, if you want to in...

AI Technical Summary

Problems solved by technology

Although this type of roadway support makes up for the shortcomings of the weak supporting force of the roadway support made of profiles, it gradually shows many shortcomings in the process of use: the anti-shock ground pressure hydraulic roadway support is arranged horizontally in the roadway, due to its The structure itself is not perfect, there is no support for the side of the roadway side pressure, no continuous support for the cross-section of the roadway, and the stability of the support is insufficient; the hydraulic support of the shed lifting beam is arranged longitudinally in the middle of the roadway, and strengthened under the U-shaped steel support The supporting function of U-shaped steel cannot be supported alone, and the roadway is divided into two, which affects the laying of roadway equipment

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