Energy-absorbing and yielding steel bracket and supporting process thereof

Abstract

The invention provides an energy-absorbing and yielding steel bracket and a supporting process thereof. The energy-absorbing and yielding steel bracket comprises a first hydraulic prop, a second hydraulic prop parallel and symmetrical to the first hydraulic prop, and a top cross beam erected on the top parts of the first hydraulic prop and the second hydraulic prop. The first hydraulic prop comprises an upper prop body and a lower prop body arranged in a sleeving way, and a conical clamping ring nested at the connecting part of the upper prop body and the lower prop body; a valve for feeding and discharging water is arranged on the bottom part of the lower prop body; and the second hydraulic prop and the first hydraulic prop are consistent in structure. Through the method, a water medium replaces an oil medium so as to be used as a hydraulic source for actively supporting; after the props achieve setting supporting forces, the upper prop body and the lower prop body are fastened by utilizing a conical clamping ring, then a water outlet valve is opened, and the conical clamping ring provides frictional resistance to play a role in absorbing energy and yielding, so that a better supporting effect is achieved; and meanwhile, by utilizing a beam-prop integrated favorable supporting system, a whole roadway is effectively supported and protected.

Description

technical field [0001] The invention relates to the technical field of mine support, in particular to a pressure-absorbing and pressure-absorbing profiled steel support and a support process thereof. Background technique [0002] With the increase of the mining depth of metal and non-metal mines, the technical level of support for roofs, surrounding rocks and other vulnerable rock masses is also getting higher and higher. How to improve the support effect of supports is an urgent problem to be solved at this stage. . [0003] At present, widely used supports include coal mine hydraulic supports and mechanical rod-shaped supports. Among them, although the coal mine hydraulic support can achieve a high support bearing capacity, its recovery is inconvenient, and the moving process is also relatively complicated; and the overall support process requires a large amount of consumables and high manpower transportation costs, which lead to its practical application. Limited, poor ...

AI Technical Summary

Problems solved by technology

However, the elastic buffer mechanism in this patent can only buffer the incoming pressure in the horizontal direction, and cannot effectively buffer the pressure in the vertical direction; at the same time, the beam structure set in the patent is relatively complicated, which is not only inconvenient to use , which also brings a large load to the hydraulic support; in addition, the hydraulic support of this patent uses hydraulic oil, which has high cost and large pollution, and the overall application is limited

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