METHOD FOR REINFORCED POLE FOUNDATION RECOVERY AND JACKET FOR DAMAGED POWER TRANSMISSION POLE FOUNDATION REPAIR Russian patent published in 2007 - IPC E02D37/00 

FIELD: power industry, particularly to repair of damaged foundations or foundation structures.

SUBSTANCE: method involves excavating ground around pole foundation to be repaired to create pit having predetermined depth; erecting form inside pit around foundation to be repaired; filling space defined by inner form surfaces and outer foundation surface with repair mortar; hardening the mortar; dismantling the form and filling pit with ground. Depth of pole foundation concrete damage is measured by ultrasound method. Ground is excavated for depth exceeding that of damaged pole foundation concrete. Then wedge-like form is created so that lower edges of form walls adjoin side foundation surface and bears upon ground from each foundation side. After that above space between form and foundation is filled with repair mortar to create jacket. The jacket has converging downwards tetrahedron shape. Then foundation head is created as sloping faces inclined to side walls of the jacket. After mortar hardening the faces are covered with water-repellent coating. Ready jacket is made as tetrahedral cocoon of hardened repair mortar, which encloses damaged pole foundation from outer side thereof. Foundation base arranged from foundation head side comprises sloping faces directed towards cocoon sides and covered with water-repellent coating. Cocoon height exceeds damaged foundation section depth.

EFFECT: decreased material consumption and labor inputs.

2 cl, 5 dwg