METHOD FOR CREATING A GEOTECHNICAL STRUCTURE IN THE GROUND Russian patent published in 2021 - IPC E02D5/20 

FIELD: construction industry.

SUBSTANCE: invention relates to construction and can be used in the construction of underground structures by the “wall in the ground” method, in particular landslide barriers, pit fences, underground floors of buildings, tunnels and collectors for various purposes, underground passages, etc. in conditions of fractured rocks, mainly of carbonate composition. The method for creating a geotechnical wall-in-the-ground structure in the ground includes drilling of cementation boreholes, injection of hardening mortar into cracks of permeable rocks, development of a trench under the protection of drilling mud, installation of a reinforcing frame and concreting of a geotechnical structure. To prevent drilling fluid leaks into fractured permeable rocks, they are injected with a gel-forming suspension through wells previously drilled along the axis of the wall in the ground to an estimated depth below the design mark of the bottom of the wall in the ground. The suspension is prepared on the construction site by mixing the gelating composition with bentonite solution, while the composition is determined experimentally by the leakage of trial portions of the suspension, depending on the fracturing of permeable rocks, and the suspension penetrates into cavities and cracks and turns into an elastic waterproof material. At the next stage of work, during the excavation of the trench, fractured permeable rocks impregnated with a suspension that does not impair the properties of the bentonite solution and does not reduce the quality of the concrete mixture are drilled under the protection of drilling bentonite mortar, then a reinforcing frame is installed and reinforced concrete wall is concreted in the ground with concrete mixture.

EFFECT: reducing the cost and material intensity of work on the construction of a wall in the ground with a simultaneous increase in the quality of concrete.

1 cl, 3 dwg