Energy-absorbing and pressure-stabilizing tunnel supporting structure and implementation method thereof

Abstract

The invention provides an energy-absorbing and pressure-stabilizing tunnel supporting structure and an implementation method thereof, and belongs to the technical field of tunnel supporting, the energy-absorbing and pressure-stabilizing tunnel supporting structure comprises an arch frame, a deformation body, an isolation structure layer, an elastic structure layer and grouting holes, one end of the deformation body is connected with the arch frame, and the other end of the deformation body is in contact with tunnel surrounding rock; the deformation body is used for providing continuous and constant support counterforce when continuous deformation occurs; the isolation structure layer is connected with the arch frame; an independent space is formed between the arch frame and the tunnel surrounding rock; the deformation body is located in the independent space; the grouting holes are communicated with the space between the arch frame and the tunnel surrounding rock; the elastic structure layer is filled in the independent space. According to the energy-absorbing and pressure-stabilizing tunnel supporting structure and the implementation method thereof provided by the invention, constant supporting counter-force can be provided while the deformation energy of the surrounding rock of the tunnel is absorbed. The elastic structure layer is used for absorbing deformation energy of tunnel surrounding rock, construction safety can be guaranteed, and the bearing capacity of the tunnel surrounding rock is fully exerted. And a good effect on preventing tunnel collapse and subsequent cracking is achieved.

Description

Technical field [0001] The present invention belongs to the field of tunnel support technology, more particularly, relates to an energy-absorbing stabilized tunnel support structure and embodiment thereof. Background [0002] After the tunnel is excavated, the stress of the rock mass is released, and the surrounding rock will undergo continuous deformation, and the deformation will be transmitted to the supporting system, and then the supporting structure will bear the deformation reaction force of the surrounding rock. When the deformation pressure of the surrounding rock of the tunnel is large and the bearing capacity of the support system is exceeded, the support structure will be destabilized and damaged. Since the surrounding rock of the tunnel itself has a certain bearing capacity, it is necessary to adjust the timing and support stiffness of the supporting structure in order to reduce the surrounding rock load borne by the supporting structure. [0003] At present, the abo...

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Problems solved by technology

[0006] The purpose of the present invention is to provide an energy-absorbing and stabilizing tunnel support structure and its implementation method, aiming to solve the above-mentioned technical problems existing in the prior art, such as inconvenient construction, restricted construction effect, and potential safety hazards

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