METHOD OF RECOVERING BARROW PITS FOR COSTRUCTING VARIOUS STRUCTURES Russian patent published in 2009 - IPC E21C41/32 

FIELD: mining.

SUBSTANCE: proposed invention can be used for recovery of disturbed lands in agriculture and in construction and power engineering. The proposed method comprises filling the barrow pit space with, first, construction waste, layer by layer, then dumping overburden rocks to future foundation ditch bottom mark lever. Note here that an average-grain size sand is laid on the overburden rocks layer to make a leveling layer to be compacted. Then reinforced-concrete elements are laid on the compacted leveling layer so that their end faces make a butt joint their ends fall beyond geometrical sizes of the future foundation and overlap completely the foundation perimeter. Note also that the said reinforced-concrete elements are laid in parallel to each other and ad a certain distance from each other. Now an intermediate layer of average-size broken hard rock is laid onto aforesaid reinforced-concrete elements to the mark of the base of future foundation, the intermediate layer thickness making at least half the diametre of reinforced-concrete element or half its height. Finally the intermediate layer is leveled and compacted for the foundation to be made.

EFFECT: reduced labor input of recovery works.

3 cl, 2 dwg