METHOD OF TUNNEL RAILWAY BASE REPAIR Russian patent published in 2008 - IPC E01B1/00 E01B29/04 E01B37/00 

FIELD: building, road works.

SUBSTANCE: invention refers to repair of a railway on a concrete bed in a tunnel. Method involves raising a part of the pumping railway concrete together with rails and packers using elevating device, followed by filling in a casing on longitudinal borders of a wall of a cradle with a treatment solution and bore holes of cross-section borders of lots of a repaired way, providing tight parting of lots of a repaired way. The method further involves consistent charging the treatment solution in other bore holes, and also in a hollowness of concrete of the return arch and hollowness on a contact working area between concrete of the return arch and a primary rock.

EFFECT: restoration of design position of a way with rails and packers grid grouted in concrete in a railway tunnel in conditions of soil collapsibility, fretting of concrete contact surfaces and necessity of provision of continuous train handling with fixed speeds of train movement.

2 dwg