METHOD FOR ERECTING EARTH DAM Russian patent published in 2018 - IPC E02B7/06 

FIELD: construction.

SUBSTANCE: method for erecting an earth dam by the hydromechanization method in the distribution area of permafrost soils includes excavation of soils by the hydromechanization method, slurry transportation to the place of laying in the dam body through pipelines. Frozen soils are excavated by water washing through boreholes 2. Mining wells 2 are located in close proximity to the dam being built. Cavities formed as a result of borehole hydraulic soil mining in a frozen layer are filled with water by 90% or their volume, which after freezing ensures the stability of the surrounding rocks. A closed water rotation cycle can be envisaged. In the water rotation cycle, an artificial reservoir 6 can be used, the base of which is waterproofed with a polyethylene film 7. Increased efficiency is achieved by decreasing soil excavation area and reducing the soil transportation length, as well as the possibility of selective soil excavation, including soil surrounded by rocks. Minimizing the change in terrain is achieved by preserving the surface profile above the soil being excavated. Increase in environmental friendliness is achieved by minimizing changes in flora and fauna on a soil excavation site surface, preserving populations. The invention can be successfully applied to the production of earth dams in permafrost conditions.

EFFECT: efficiency increase, minimizing landscape change, increasing environmental friendliness.

2 cl, 2 dwg