Buffering support capable of implementing three-dimensional yielding and supporting method

Abstract

The invention discloses a buffering support capable of implementing three-dimensional yielding and a supporting method. The support comprises a plurality of U-shaped steel supports, wherein the plurality of U-shaped steel supports are arranged in parallel, and support legs on the same sides of two adjacent U-shaped steel supports are connected by virtue of a crossbeam; the U-shaped steel support comprises a semicircular top beam, two support legs and two energy absorption apparatuses, and two ends of the top beam are respectively connected with the upper ends of the two support legs; the energy absorption apparatus comprises an inner pipe, an outer pipe, an energy absorption pipe, a plurality of groups of steel balls and a spring seat; the inner pipe is arranged in the outer pipe; the energy absorption pipe is arranged between the outer pipe and the inner pipe, an inner hole of the energy absorption pipe is a cone with large top and small bottom, the plurality of groups of steel ballsare arranged between the inner hole of the energy absorption pipe and the inner pipe, and each group of steel balls is disposed in a same horizontal plane; the lower end of the inner pipe is connectedwith the spring seat by virtue of a spring; and the lower ends of the two support legs are respectively connected with the upper ends of the inner pipes of the two energy absorption apparatuses. Whenused in a mine environment with impact ground pressure, rock explosion and the like, the buffering support is good in application effect; the harm of the impact ground pressure can be prevented, thesafety of the personnel can be ensured, the supporting cost can be greatly reduced, the overall supporting effect can be improved, the impact ground pressure can be effectively prevented, the long-term stability of the surrounding rock of a roadway can be ensured.

Description

technical field [0001] The invention belongs to the field of coal mine roadway engineering deformation and roadway surrounding rock control, and in particular relates to a buffer support and a support method capable of realizing three-dimensional pressure relief for underground mining rockburst and rockburst. Background technique [0002] In recent years, due to the continuous increase of mining depth and the increasingly complex mining environment, the number of mines and the degree of damage caused by rock burst disasters have shown an obvious upward trend. Therefore, the problem of rock burst will become more serious, more prominent and more common. Rockburst disasters not only bring great hidden dangers to the safe production of mines, but also seriously threaten the life safety of mine personnel. Therefore, with the increasingly prominent rock burst disasters, how to ensure the safety of underground personnel and equipment, ensure the safe production of mines, accurate...

AI Technical Summary

Problems solved by technology

In addition, since the rigid support has no buffer force and the deformation range of the support is small, it cannot effectively release the elastic energy accumulated on the coal mass around the roadway, and it is difficult to relieve the impact of ground pressure. Therefore, it is necessary to design a new roadway support system

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