An anti-shock bracket with corrugated surface

Abstract

An anti-collision support with a corrugated face belongs to the technical field of coal mine roadway supporting. Compared with the U-shaped steel support in the prior art, a corrugated face structure is additionally arranged on the middle section of an arc-shaped beam of the support, due to the corrugated face structure, the whole or part of the support can contract rapidly when encountering rock burst, the avoidance of surrounding rock is realized by the contraction of the support, and further the avoidance and energy consumption of the whole support are realized; according to the anti-collision support provided by the invention, the traditional mode of connecting two adjacent arc-shaped beams by a clamp cable is abandoned, a W-shaped elastic strip buckle is adopted to be a limiting member and realize composure control, and when rock burst is encountered, connecting components between the beams can dislocate mutually along with the two adjacent beams and follow the beams to move, so that the failure of connection at the connecting part of the two adjacent arc-shaped beams is avoided, meanwhile the contraction of the whole support is facilitated, and the stability of connection is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of coal mine roadway support, and in particular relates to an anti-scour support with a corrugated surface applied to coal and rock roadways. Background technique [0002] my country's energy structure is still dominated by coal consumption, and most of my country's coal resources are buried in the depths below a kilometer, so it is an inevitable trend for coal mining to go deep. But at the same time, deep mining brings serious underground disasters. As one of the major dynamic disasters in coal mines, rock burst has caused a large number of property losses and casualties in recent years. When rock burst occurs, the damaged surrounding rock will have a violent impact on the support body, causing the load on the support body to increase suddenly, exceeding the static pressure by several times, ten times or even greater, often causing the support body to burst. Local damage, deformation or overall collapse a...

AI Technical Summary

Problems solved by technology

When rock burst occurs, the damaged surrounding rock will have a violent impact on the support body, causing the load on the support body to increase suddenly, exceeding the static pressure by several times, ten times or even greater, often causing the support body to burst. local damage, deformation or overall collapse damage, which poses a serious threat to the safety of underground workers and production equipment

[0003] At present, the most widely used roadway support is U-shaped steel support, which is mostly composed of three-section, four-section or six-section arc-shaped beams overlapping each other, and forms an arch support or a ring support ring. The two adjacent curved beams are simply hooped by a cable, but this traditional U-shaped steel bracket still has obvious defects. Among them, the toughness of the curved beams with smooth surfaces is generally poor, resulting in the yield of the curved beams. The positional energy absorption is very poor, and the support does not have the function of quickly giving way to absorb energy. Once the impact ground pressure occurs, the part of the arc beam is easy to break or the joint of the cable is broken, which will eventually lead to the overall collapse of the support and support failure, resulting in a safety accident

Images