Efficient method of eliminating accidental damage of sewer tunnel

Abstract

The article is devoted to the development of technological and organizational solutions for elimination of local emergency damage to sewage tunnel collectors. In the article, conditions of operation and constructions of the sewage tunnel collector destroyed by corrosion are investigated on Grekovska street in Kharkiv, Ukraine; the methods of production of repair and restoration works are analyzed in this article; technological and organizational solutions have been developed for the liquidation of emergency damage to sewage tunnel collectors, taking into account technical, organizational and economic indicators. Thus, when comparing recovery options by different methods, it is noted that the proposed technology is more economically feasible in view of the relatively low cost of the material for this solutions. At the same time, the duration of the work by the proposed method of extrusion by introducing a secondary lining with anticorrosive properties will be reduced by 30%.

Approach to Assessing the Consequences of Emergencies in Sewer Tunnels

“…All the abovementioned products, analogues and prototypes have their own specificities for the foreign conditions of carrying out rehabilitation works in the adequate funding conditions. Complex studies into the service life of sewer networks of different diameters were presented and comprehensively studied by scientists [11][12][13][14][15][16][17][18][19]. In the studies [11][12][13] of the life cycle of sewer networks, particular attention was paid to a comprehensive approach for its assessment, but it would be reasonable to approach each individual case on a more individual basis, taking into account the results of continuous monitoring of operation reliability and the corresponding consequences of damage.…”

“…Comprehensive studies of the main causes of the disruption of the sustained operation of sewer tunnels clearly show that the main cause of their deterioration is corrosion processes [11][12][13] resulting in the presence of air holes, cracks, fractures in the sewerage distribution networks. The cause of corrosion is the thermodynamic instability of structural materials to the effects of substances being in contact with their environment.…”