METHOD TO RECOVER CONTACT LAYER "FOUNDATION - SOIL BASE" Russian patent published in 2016 - IPC E02D27/26 

FIELD: construction.

SUBSTANCE: method to recover a contact layer "foundation - soil base" includes the installation of injector pipes with injection holes, closed by a rubber collar and arranged in the gravel layer, in a pile foundation grill erected in winter time on bases, which are made of heaving soils for freezing and subsiding for thawing, after the arrangement of which during foundation soil thawing accompanied with subsiding processes, the contact layer "foundation - soil base" is recovered by the injection of cement mortar via the injector pipes into cavities of the gravel layer and cavities formed under the foundation with its subsequent hardening.

EFFECT: increased stability of foundations with a low grill, reduced labour intensiveness and material intensity, increased manufacturability and quality of performed works.

7 dwg