METHOD FOR REINFORCEMENT OF LINEAR OBJECTS ON SINK HOLE-HAZARDOUS AREAS Russian patent published in 2016 - IPC E01C21/00 E02D3/12 

FIELD: construction.

SUBSTANCE: invention relates to construction and repair of linear objects located in dangerous karst zones, namely, to strengthening soil foundation. Reinforcement method for linear objects in dangerous karst zones consists in determination of linear object zone where formation of at least one karstic cavity with diameter no more than 4 m is possible, driveway is removed in this zone, soil layer is cut with formation of trench width of which is not less than width of driveway to provide loam content in soil from 25 % to 35 % and sand of average size ranging from 75 % to 65 % respectively , soil is treated in trench and cut soil layer is treated in pile by adding to it loam or sand depending on the initial composition of soil, after which the soil in trench and pile is treated with polifilizator “PGSZH 1” in liquid form and polifilizator “PGSP 3” in the form of powder and stirs it. Steel galvanised corrugated sheets are placed on the treated in pit soil in a projection under applied movable loads and connected, layers of geoweb are laid above on which soil layer, treated in the pile is placed, it is compacted in the pit, one more layer of geoweb is laid on compacted soil, on which soil treated in pile is laid in several layers, each layer is compacted and driveway is arranged.

EFFECT: technical result of the disclosed solution is increased safety of linear objects located in dangerous karst zones.

8 cl