E21D11/08

METHOD FOR BUILDING A TRAFFIC TUNNEL, A CONDUIT SHAFT, OR A PRESSURISED WATER SHAFT BY WAY OF THE TUBBING CONSTRUCTION METHOD
20250305415 · 2025-10-02 · ·

A method for the construction of a trafficway tunnel, a conduit shaft or a pressurized-water shaft by tubbing construction, wherein segment components are assembled in a machine-generated bore in the rock to form a closed lining in the form of a segment tube, and the annular gap between the bore and the outer wall of the segment tube is filled with a composition which includes polymerization-curing reactive resin and filler, where the filler, before or during conveying into the annular gap, is supplied with the polymerization-curing reactive resin, which is mixed with the filler and is dispersed therein, characterized in that the composition is cement-free and the filler includes a non-water-reactive inorganic material which has an average particle size500 m.

METHOD FOR BUILDING A TRAFFIC TUNNEL, A CONDUIT SHAFT, OR A PRESSURISED WATER SHAFT BY WAY OF THE TUBBING CONSTRUCTION METHOD
20250305415 · 2025-10-02 · ·

A method for the construction of a trafficway tunnel, a conduit shaft or a pressurized-water shaft by tubbing construction, wherein segment components are assembled in a machine-generated bore in the rock to form a closed lining in the form of a segment tube, and the annular gap between the bore and the outer wall of the segment tube is filled with a composition which includes polymerization-curing reactive resin and filler, where the filler, before or during conveying into the annular gap, is supplied with the polymerization-curing reactive resin, which is mixed with the filler and is dispersed therein, characterized in that the composition is cement-free and the filler includes a non-water-reactive inorganic material which has an average particle size500 m.

Segment with concrete embedded with fluid-filled steel pipes

The present invention relates to an intelligent segment with concrete embedded with gas/liquid-filled steel pipes, the segment including a concrete portion, wherein the concrete portion serves as a main stress component of the segment, is made of ultra-high performance concrete and is provided with a hollow portion for arranging the steel pipes; a steel pipe portion, wherein the steel pipe portion includes the gas/liquid-filled steel pipes uniformly arranged on a tension side of the segment and penetrating through the entire segment in a circumferential direction, and a gas/liquid filling system and a pneumatic/hydraulic control system connected to the steel pipes; a reinforcing bar portion, wherein the reinforcing bar portion includes longitudinal bars for bearing the tension, stirrups for bearing the shear force and supports meeting construction structure requirements; and a joint portion, wherein the joint portion includes circumferential seam joints and longitudinal seam joints.

Segment with concrete embedded with fluid-filled steel pipes

The present invention relates to an intelligent segment with concrete embedded with gas/liquid-filled steel pipes, the segment including a concrete portion, wherein the concrete portion serves as a main stress component of the segment, is made of ultra-high performance concrete and is provided with a hollow portion for arranging the steel pipes; a steel pipe portion, wherein the steel pipe portion includes the gas/liquid-filled steel pipes uniformly arranged on a tension side of the segment and penetrating through the entire segment in a circumferential direction, and a gas/liquid filling system and a pneumatic/hydraulic control system connected to the steel pipes; a reinforcing bar portion, wherein the reinforcing bar portion includes longitudinal bars for bearing the tension, stirrups for bearing the shear force and supports meeting construction structure requirements; and a joint portion, wherein the joint portion includes circumferential seam joints and longitudinal seam joints.

TUNNEL CONSTRUCTION METHOD AND MACHINE
20260098474 · 2026-04-09 ·

A method for constructing natural tunnels including advancing an excavation front of a tunnel by a predetermined advance length via point excavation with excavating machines, removing excavated material from a work region between the excavation front and a final lining front of the tunnel, applying a primary lining onto walls exposed by the excavation at the advance length of the excavation front, advancing the final lining front by a predetermined advance length by creating a final lining on the primary lining applied at the same advance length in a previous advance cycle, and repeating all steps until the tunnel is completed. The step of advancing the final lining front is carried out with a segment placing machine having a tubular frame. Passage or displacement of operating machines, vehicles, or equipment from/to the work region during the steps of removing and applying takes place through the tubular.