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

FIELD: mine production.

SUBSTANCE: method for fastening a mine shaft of an elliptical cross-section with monolithic composite concrete. The method involves manufacturing a composite concrete supporting elliptical ring in a shaft, including making a reinforcing frame from nonlinear rod reinforcement along elliptical arcs in the ring and reinforced transverse brackets of composite reinforcement. The method also includes creating a concrete body of a composite-concrete supporting elliptical ring in the shaft. It also includes the construction of support from monolithic composite concrete, including the assembly and installation of a reinforcing frame from non-linear rod reinforcement along elliptical arcs of circles in the shaft onto a composite concrete supporting elliptical ring. The method also includes creating a concrete body of the side surface of the elliptical 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 elliptical 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 shaft. For reinforced transverse brackets, the maximum moment of resistance along the long axis of the ellipse is set radially to the axis of the shaft and perpendicular to the cross-sectional planes of the ring. For composite concrete support in the shaft, the long axis of the reinforcement ellipse is combined with the maximum loads on the composite concrete support of the elliptical 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 perpendicular to the center of the elliptical 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 elliptical shaft.

EFFECT: increasing the reliability of monolithic composite concrete support for an elliptical mine shaft.

1 cl, 6 dwg, 1 tbl