INTERCONNECTING AREA WITH THE TUNNEL BOILER DURING ITS CONSTRUCTION Russian patent published in 2021 - IPC E02D29/00 

FIELD: construction.

SUBSTANCE: invention relates to the field of construction, namely to tunneling. The section of interface with the tunnel pit during the period of its construction includes a pit, a zone of water-saturated soils, a wall limiting the pit space from water-saturated soils, a zone of waterproof soils adjacent to the wall plane at the point of the intended exit into the pit, and injection equipment located in the pit. The zone of impermeable soils is made in the form of a cylinder of diameter "D" and length "L", the axis of which coincides with the axis of the tunnel being constructed, and the cylinder in its cross section contains two subzones - a contour subzone in the form of a ring with a thickness of "δ" and an inner subzone of radius "r". The ring of the contour subzone is made in the form of a continuous row of adjoining mini-cylinders formed by injecting a solution that quickly hardens in 3-7 minutes into a separate well, and the inner subzone is formed by the arrangement of adjoining mini-cylinders formed by injecting a solution slowly hardening in 10-40 minutes into a separate well.

EFFECT: increasing the reliability of the system, reducing the cost of tunneling.

1 cl, 10 dwg