Equal-strength tunnel support steel band

Abstract

The invention provides an equal-strength tunnel support steel band, comprising an elongated steel band body; a platform protruded out of the steel band body is arranged at the middle of the steel band body in the length direction; two sides of the platform in the length direction are respectively connected with the steel band body by means of a first upright plate and a second upright plate; a plurality of first through-holes are formed on the platform; second through holes are formed on the first upright plate; third through holes are formed on the second upright plate; the second through holes and the third through holes are opposite to one another and arranged at intervals along the length direction of the platform; all through holes are truncated cone-shaped holes; the lower-side diameters of the first through holes are greater than the upper-side diameters; the external diameters of the second and third through holes are greater than the internal diameters; rubber locking blocks are installed in the through holes and are of truncated cone shapes; locking holes are formed on the first and second rubber locking blocks along the radial directions; and steel strands are installed in the locking holes. The equal-strength tunnel support steel band solves the disadvantage of the present support steel band, forms a stable net-like support structure for tunnel walls and reinforces the support strength.

Description

technical field [0001] The invention relates to an underground supporting device for coal mines, in particular to an equal-strength roadway supporting steel belt. Background technique [0002] Mine support steel belt is currently a kind of support device commonly used by various mining enterprises in roadway, chamber support and landslide reinforcement. With the continuous development of mineral mining technology, the mining depth of mines is getting larger and larger. The rock formations that the roadway passes are becoming more and more complicated. In order to ensure the safety of mining production, the demand for the strength and light weight of the supporting steel belt products is also increasing. Although the existing supporting steel belt products can provide A certain support strength, but because the steel strips can only be connected along the length direction with overlapping connections of anchor rods, forming a strip support structure, providing support for the...

AI Technical Summary

Problems solved by technology

[0002] Mine support steel belt is currently a kind of support device commonly used by various mining enterprises in roadway, chamber support and landslide reinforcement. With the continuous development of mineral mining technology, the mining depth of mines is getting larger and larger. The rock formations that the roadway passes are becoming more and more complicated. In order to ensure the safety of mining production, the demand for the strength and light weight of the supporting steel belt products is also increasing. Although the existing supporting steel belt products can provide A certain support strength, but because the steel strips can only be connected along the length direction with overlapping connections of anchor rods, forming a strip support structure, providing support for the side wall of the roadway along the length direction of the roadway, between the strip steel strips Cannot be connected directly, so support strength is still limited

In order to improve the support strength, those skilled in the art have added transverse steel strips between the strips of steel strips arranged along the length direction of the roadway, and connected the strips of steel strips arranged along the length direction of the roadway to form a mesh support. However, when the horizontal steel belt is installed along the section of the roadway, it must be bent to match the shape of the roadway. After the steel belt is bent, it is easy to break from the crease and cannot play an effective supporting role.

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