FIELD: repair and reconstruction of tall industrial chimneys. SUBSTANCE: process of repair and reconstruction of tall industrial chimneys includes treatment of monolithic lining of internal surface of chimney shaft with concrete and reinforcement of external surface of chimney shaft. Monolithic lining is treated with concrete with the aid of mine hoist and lifting equipment employed in process of erection of chimney. When operation of treatment of lining with concrete reaches level at which reinforcement of external surface of chimney shaft starts treatment of monolithic lining and of external reinforcement envelope of chimney shaft are conducted at same time. With this in mind hole for passage of end section of chute located above distributing bunker installed near mine hoist is formed in chimney shaft. Bucket of cage of mine hoist lifts concrete mixture from zero mark to chute where bucket automatically tips over and concrete mixture flows along chute into distribution bunker installed outside from which mixture is delivered in cars over external circular platform for laying into ring slit between old concrete in chimney shaft and forms installed at distance of thickness of reinforcement envelope of shaft. After it internal lining is treated with concrete from working platform. To continue cycle internal working platform, external working platform or floor of suspended scaffolding are lifted to due level, hole is punched in chimney shaft, end section of chute is installed in newly punched hole. While due section is treated with concrete hole matching it is built up with concrete mixture laid in ring forms, internal lining is treated with concrete. For increase of tightness of seam upper boundaries of concreting of external envelope and of internal lining are displaced relative one another. EFFECT: shortened time of repair and reconstruction, decreased labor input and cost thanks to simultaneous treatment of external envelope and internal lining with concrete, reduced number of employed mechanisms. 2 dwg
