MONOLITHIC REINFORCED CONCRETE LINING OF AN INCLINED MINE WORKING Russian patent published in 2022 - IPC E21D5/11 

FIELD: mining.

SUBSTANCE: invention relates to mining, namely the construction of inclined mine workings under conditions of high rock pressure. Monolithic reinforced concrete support of an inclined mine working, consisting of a concrete body and a frame including: reinforcing bars along the inclined working, reinforcing bars across the base of the inclined working, reinforcing bars perpendicular to the base of the inclined working, and steel reinforcement along the arch of the arch, as well as reinforced transverse brackets, with a step corresponding to the calculated reinforcement step, made in an elliptical cross section. The long axis of the reinforcement ellipse is aligned with the maximum loads on the frame of the reinforced concrete lining of the inclined working. For reinforcing bars along an inclined mine working, the maximum moment of resistance along the long axis of the ellipse is aligned with the perpendicular to the side surface, the base, and also with the radius of the circle segment of the roof of the inclined mine working, according to their location. For reinforcing bars across the base and perpendicular to the base of the inclined mine working, the maximum moment of resistance along the long axis of the reinforcement ellipse is aligned with the perpendicular to the base and to the side surface of the inclined mine working, respectively. For steel reinforcement installed along the arch of the arch in the form of a segment of the circle of an inclined mine working, the maximum moment of resistance along the long axis of the reinforcement ellipse is combined with the radius of the segment of the circle of the frame. For reinforcing bars along an inclined working, installed at the corners of the base and the side surface, the maximum moment of resistance along the long axis of the reinforcement ellipse is aligned with the diagonal between the corresponding perpendiculars to these surfaces. For reinforced transverse brackets installed on reinforcing bars in the frame: across the base of the inclined working, perpendicular to the base of the inclined working, and steel reinforcement along the arc of the roof of the inclined working, the maximum moment of resistance along the long axis of the reinforcement ellipse is set parallel to the line of the angle of the mine working. For reinforced transverse brackets mounted on reinforcing bars along an inclined working, the maximum modulus of resistance along the long axis of the reinforcement ellipse is set parallel to the trace of the plane drawn through this bracket, on the side surface, the base of the inclined working, as well as the tangent at the point of exit of the radius to the reinforcement arc, according to their location.

EFFECT: increasing the reliability of monolithic reinforced concrete lining of inclined mine workings.

1 cl, 6 dwg, 1 tbl