METHOD OF FASTENING CIRCULAR MINE SHAFT WITH MONOLITHIC COMPOSITE CONCRETE Russian patent published in 2023 - IPC E21D5/04 E21D11/15 

FIELD: mining.

SUBSTANCE: invention relates to a method for fastening a circular mine shaft with monolithic composite concrete. The method includes manufacturing a composite concrete support ring in a shaft, includes making a reinforcing frame from nonlinear rod reinforcement along circular arcs in the ring and reinforced transverse brackets of composite reinforcement. Also includes creating a concrete body of a composite concrete support ring in the shaft. It also includes the construction of support from monolithic composite concrete, including the assembly and installation of a reinforcement cage from non-linear rod reinforcement along circular arcs in the shaft onto a composite concrete support ring. It also includes creating a concrete body for the side surface of the round shaft support. Installation of reinforced transverse brackets is carried out with a step corresponding to the calculated reinforcement step. Vertical longitudinal rod, horizontal rod composite reinforcement, as well as reinforced transverse brackets of composite reinforcement are made with an ellipsoidal cross-section. For a composite concrete support ring, the long axis of the reinforcement ellipse is aligned with the maximum loads on the ring. For non-linear reinforcement, the maximum moment of resistance along the long axis of the ellipse is combined with the vertical axis of the barrel. For reinforced transverse staples, the maximum moment of resistance along the long axis of the ellipse is set radially to the axis of the barrel and perpendicular to the cross-sectional planes of the ring. For composite concrete support in a shaft, the long axis of the reinforcement ellipse is combined with the maximum loads on the composite concrete support of a round mine shaft; for vertical and horizontal reinforcement, the maximum moment of resistance along the long axis of the ellipse is combined with the direction of the radius of the round shaft. For reinforced transverse brackets, the maximum moment of resistance along the long axis of the ellipse is set parallel to the vertical axis of the round trunk.

EFFECT: increasing the reliability of monolithic composite concrete support for a round mine shaft.

1 cl, 6 dwg, 1 tbl