SLUMP SLOPE REINFORCEMENT METHOD Russian patent published in 2008 - IPC E02D17/20 

FIELD: construction industry.

SUBSTANCE: method of landslide slope reinforcement by transferring potential slump block into rigid underground operated construction includes determination of length, width and depth of slump block as well as determination of adhesion, angle of internal friction and specific weight of soil of distorted horizon, wherein there is a flattened horizontal part of slump block sliding surface. In order to erect underground operated construction, soil is removed from potential slump block mass as per relief opening sizes: length L≥ℓ; width B≥b; depth H≥h-((2c·tg(45+ϕ/2))/γ), where L, B and H are length, width and depth respectively of relief opening /m/, ℓ, b and h are determined length, width and depth respectively of slump block; c, ϕ and γ are adhesion /kPa/, angle of internal friction /deg°/ and specific weight /kN/m³/ respectively of soil of distorted horizon, by reducing domestic pressure by deepening the opening for distorted horizon up to the value of its structural strength, and then there shall be continued removal of slump masses from slope top by levelling slump terrace and eliminating the possibility of shear forces occurrence. Opening depth and weight of underground construction can be controlled by increasing structural strength of distorted horizon under the opening bottom, e.g. by means of reinforcing solution injection up to strong layers with decreasing or increasing H, and increasing or decreasing domestic pressure or changing the allowable weight of underground construction in the above manner. Groundwater flows can be captured in underground construction and their level in surrounding soil masses can be reduced, and to underground construction frame or to its front wall there can be attached slump block body e.g. via anchors.

EFFECT: eliminating the hazard of deep earth slides activation and formation of new slump blocks, and effective use of slump-hazardous area and underground space.

4 cl, 2 dwg, 1 ex