UNDERGROUND PROTECTIVE STRUCTURE Russian patent published in 2024 - IPC E04H9/00 

FIELD: construction.

SUBSTANCE: invention relates to the field of construction of protective underground, surface and buried structures, driven piles and can be used in protection of territories from natural and climatic effects – flooding, waterlogging, seismic effects, etc., as well as man-made disasters. Protective underground structure contains a working shell with a support element in its lower part and a head in its upper part; a guiding shell is installed coaxially inside the working shell. Head is made of one or more elements inside each head element are coaxially arranged guiding shells, elements of the head and the working shell are made with the possibility of successive placement in each other with a gap, the size being sufficient for placement of a packing tampon made of twisted synthetic or vegetal fibre or their combination and pre-impregnated with tribological liquid, providing tightness of head elements and working shell to maintain equilibrium. Head elements and working shell are equipped with unions, and guiding shells of head elements and working shell are equipped with holes coaxially to nozzles for supply of filler into guiding shells. In the lower part, the working shell is equipped with helical blades, and the support element has a metal tip, wherein the helical blades have pitch of 0.25–0.5 metres, are made of metal alloy with addition of polymer wear-resistant materials, and metal tip is made with holes at height of 0.5H from lower part of tip, where H is the distance between the screw elements, with the possibility of obtaining an injection zone in the surrounding soil. Working shell, head elements, as well as guiding shells located inside them, are made of multilayer heterogeneous composite nanomaterial, wherein guiding shells of head elements are filled with loose material with vinyl plastic, vegetal fibre pre-impregnated with tribological liquid and/or soil mixture with multilayer heterogeneous composite nanomaterial. Guiding shells of the working shell are filled with nano-concrete with elements of rubber-cord material. Inside the support element there is a shell-stocking made from composite nanomaterials with holes made coaxially to the holes arranged in the support element, which serve to form an injection zone, and each of the head elements is equipped with a metal-cord ring made of high-plasticity plates.

EFFECT: high stability, reduced weight of the protective underground structure, as well as resistance to the effect of stray electric currents.

1 cl, 1 dwg