Deep underground roadway support mechanism

Abstract

The invention discloses a deep underground roadway support mechanism. The deep underground roadway support mechanism comprises a roadway, a roadway support and a surrounding rock consolidation layer, wherein a crushable backfilling layer is arranged on the edge of the surrounding rock consolidation layer, which is far away from a rock stratum, the other side of the crushable backfilling layer is fixed together with the roadway support, the inner area of the roadway support forms the roadway, a plurality of anchor rods are evenly arranged on two outer sides of the crushable backfilling layer and along the vertical direction, the other end of each anchor rod passes through the surrounding rock consolidation layer and is fixed onto the rock stratum, an anchor lock is arranged at the top of the crushable backfilling layer, the anchor lock passes through the surrounding rock consolidation layer and is fixed onto the rock stratum, a steel support is arranged on the inner side of the roadway support, and a vibration isolation device is arranged in an interval between the steel support and the roadway support. According to the deep underground roadway support mechanism, dynamic pressure loads are evenly distributed through the crushable backfilling layer, the dynamic pressure loads are reduced, pressure transmitted from the dynamic pressure loads to the roadway support is reduced, residual pressure is absorbed through the vibration isolation device, and accordingly compression resistance bearing capacity of the roadway structure is improved.

Description

technical field [0001] The invention relates to an underground roadway engineering, in particular to a support mechanism for a deep underground roadway. Background technique [0002] In the construction of underground roadway engineering, people usually increase the bearing capacity of the structure itself to improve the bearing capacity of the roadway against deep underground dynamic pressure loads. The propagation of the peak pressure of the compression wave generated by the underground dynamic pressure load is closely related to the stiffness of the rock formation medium. When the stiffness of the rock formation medium is equal, the compression wave propagates in a uniform form, and the peak pressure on the wave front is of equal intensity. During propagation, when encountering rock media with unequal stiffness, the peak pressure on the wave front will change unevenly, and the concentration of peak pressure will no longer be the same. The pressure of the formation medium...

AI Technical Summary

Problems solved by technology

The propagation of the peak pressure of the compression wave generated by the underground dynamic pressure load is closely related to the stiffness of the rock formation medium. When the stiffness of the rock formation medium is equal, the compression wave propagates in a uniform form, and the peak pressure on the wave front is of equal intensity. During propagation, when encountering rock media with unequal stiffness, the peak pressure on the wave front will change unevenly, and the concentration of peak pressure will no longer be the same. The pressure of the formation medium is small, and when the rigidity of the rock formation close to the structure is large, the pressure transmitted from the rock formation to the structure itself is relatively large. ability

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