Rigid-flexible support structure

Abstract

The invention relates to the field of roadway support, in particular to a rigid-flexible combined supporting structure. The rigid-flexible combined supporting structure is characterized in that an arc U-shaped steel is arranged at the top of a roadway; straight U-shaped steels are arranged on two side walls of the roadway; the arc U-shaped steel is connected with the straight U-shaped steels by a U-shaped steel clamp cable; crossties are arranged between the arc U-shaped steel, the straight U-shaped steels and the surrounding rocks of the roadway; openings of U-shaped grooves in the arc U-shaped steel and the straight U-shaped steels face the crossties; a base plates is laid at the bottom of the roadway; steel ropes are connected end to end to form a shape consistent with the cross section of the roadway, and are distributed in the U-shaped grooves of the arc U-shaped steel and the straight U-shaped steels and under the base plate. According to the rigid-flexible combined supporting structure provided by the invention, the U-shaped steels play a role of rigid supporting, when an impact load damages the U-shaped steels, the internal steel ropes play a role of flexible supporting, at the transitional stage from the rigid supporting to the flexible supporting, a buffer effect of the supporting structure for the impact load is achieved, so that an anti-impact effect is achieved.

Description

technical field [0001] The invention relates to the field of roadway support, in particular to a rigid-flexible combination support structure. Background technique [0002] In my country, with the deepening of coal mine mining and the increasing support required for tunnels, the damage of rock burst is also intensified. Most of the existing support methods are support structures under static surrounding rock pressure. It is difficult to deal with the current anti-shock support problem, because some new support methods must be proposed. Although so far, many scholars have proposed a lot of countermeasures, but these measures are either ideal in support effect, but the cost is high. The amplitude is increased, or the ideal effect of support cannot be achieved. Contents of the invention [0003] The problem to be solved by the present invention is to provide a support structure with low cost and good anti-shock effect. [0004] The technical scheme adopted in the present inve...

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Problems solved by technology

[0002] In my country, with the deepening of coal mine mining and the increasing support required for tunnels, the damage of rock burst is also intensified. Most of the existing support methods are support structures under static surrounding rock pressure. It is difficult to deal with the current anti-shock support problem, because some new support methods must be proposed. Although so far, many scholars have proposed a lot of countermeasures, but these measures are either ideal in support effect, but the cost is high. The amplitude is increased, or the ideal effect of support cannot be achieved

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