METHOD FOR RECONSTRUCTING RAILWAY TUNNEL Russian patent published in 2024 - IPC E21D9/01 E21D9/04 

FIELD: construction.

SUBSTANCE: method for reconstructing railway tunnels, both in dense urban areas and beyond, without impeding the movement of trains along them during the process of reconstruction work. The method for reconstructing a railway tunnel involves installing a screening structure made of pipes and then excavating soil under its cover. Simultaneously with the work on constructing the shielding structure, work is underway to excavate and secure excavations for monolithic reinforced concrete supports and arches, after which the reinforcement frames of the shielding structure, supports and arches are tied and grouted, the lining of the existing tunnel is dismantled, and the soil is modified to the design internal outline of the new lining. Then work is carried out to reconstruct the tray part.

EFFECT: ensuring the possibility of carrying out work on reconstruction of railway tunnels with less labour and material costs, allowing work on reconstruction of the tunnel lining in geological engineering conditions of varying levels of complexity while minimizing the negative impact caused by the process of carrying out work on the reconstruction of the tunnel on adjacent urban objects or transport infrastructure (foundations of nearby structures, existing railways, highways, etc.) without reference to the rolling stock schedule.

1 cl, 2 dwg