Repair and refurbishment technologies for inspection shafts in deep-level sewer tunnels

Goncharenko, Dmitriy; Bondarenko, Dmitro; Starkova, Olha

doi:10.1108/wje-12-2016-0161

Cited by 7 publications

(5 citation statements)

References 1 publication

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“…, Добряєва А.А., Бондаренка Д.О., Старкової О.В. [6], Воблих В.О., Гончаренка Д.Ф. [4][5][6][7], Обухова Є.С., зарубіжних Д. Метьюза [10], Хастмана [9], В. Собека [12] , М. Наземі [11] велика увага приділяється ремонту та відновленню водовідвідних тунелів з використанням різноманітних будівельних та конструкційних матеріалів, стійких до агресивних середовищ стічних вод.…”

Section: аналіз останніх досліджень та публікаційunclassified

Restoration of the Damaged Sewage Collector as a Consequence of Military Aggression

Aleynikova,

Hulievskyi,

Lykhohrai

et al. 2023

Scientific Bulletin of Building

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The conditions of military aggression and a limited budget pose a number of challenges to the system of sewage networks, the solution of which is critically important for maintaining the functionality and efficiency of the infrastructure. Accidental damages that have occurred in recent years on the sections of sewer tunnels in the city of Kharkiv are evidence of the main cause of local collapse - damage to the reinforced concrete structure of the tunnel vault as a result of biogenic corrosion. At the same time, as a rule, the tray part, which is constantly filled with sewage, remains intact and can be used as a basis for further repair and restoration works. The article examines the technology developed by the authors for repair and restoration works on destroyed sewer tunnels using basalt tiles. The calculation of the tunnel fragment was carried out using the finite element method in PC SKAD, which allows determining the reinforcement scheme of the reinforced concrete structure. This design ensures the stability of the newly created sewer tunnel when it is affected by traffic that is on the surface of the soil. To justify the feasibility of using the proposed technology, two options for restoring the destroyed tunnel were considered: the method using stone casting tiles; method of replacing destroyed pipes with polyethylene ones. As an example, a section of the tunnel with an internal diameter of 1840 mm was chosen. The calculation of the economic effectiveness of the implementation of organizational and technological solutions for the repair and restoration of sewer tunnels using basalt tiles showed that the reconstruction of the tunnel using the method of laying basalt tiles (alternative technology) is almost twice as effective, which is economically feasible and scientifically justified. And under the conditions of tough market competition and savings of financial resources, the priority indicator of choosing a technology, according to comparable operational characteristics, is its cost. Keywords: sewer tunnel, basalt, technological solutions, economic efficiency, open method.

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Section: аналіз останніх досліджень та публікаційunclassified

Restoration of the Damaged Sewage Collector as a Consequence of Military Aggression

Aleynikova,

Hulievskyi,

Lykhohrai

et al. 2023

Scientific Bulletin of Building

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“…[12], Бондаренка Д.О., Старкової О.В. [9,14], Воблиха В.О., Гончаренка Д.Ф. [3,5], Обухова Є.С., зарубіжних Д. Штайна [22], Хастмана [18] [15], Абрамовича І.А., Гончаренко Д.Ф.…”

Section: аналіз останніх досліджень та публікаційunclassified

Organizational and Technological Solutions for the Repair and Restoration of Sewage Tunnels in the Places Adjacent to Exploration Mines

Aleynikova,

Hulievskyi,

Voronenko

2023

MEC

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The analysis of the occurrence of typical accidents of water drainage networks indicates a number of reasons for their failure, namely: a 2-3 times decrease in the amount of sewage over the last 20 years; increase in aggressiveness of wastewater, decrease in flow rate and increase in rainfall. During operation beyond the regulatory term, the reinforced concrete vault of the tunnel is almost completely destroyed as a result of biogenic corrosion. The listed reasons for the destruction of sewage tunnels built more than 50 years ago are generally similar in nature. From the above, it follows that the specifics of the operation of sewer tunnels can be highlighted - the cross-section diameter is more than 1500 mm and the laying depth is more than 5-7 m. It should be noted that the sections of the tunnels at the points of connection with inspection shafts, as well as the structure of inspection shafts, experience the greatest corrosion. A significant role in the repair and restoration of water drainage structures is played by the selection of materials and structures capable of counteracting the aggressive effects of hydrogen sulfide and other gases. In Ukraine and abroad, considerable experience has been accumulated in the repair and restoration of drainage network structures using materials and structures with high acid and alkali resistance. Conducted research has shown that products based on basalt have a number of advantages: high strength, fairly low weight, reliability during operation in a wide temperature range, they are not prone to corrosion and have high chemical resistance. The experience of working with pneumatic formwork gives them special importance, because they ensure the following requirements:quick installation and dismantling of the formwork; the possibility of using it for curved spatial surfaces forms, even with large spans;multiple reversibility of the formwork. The technology for the construction of the vaulted part of the sewer tunnel with internal finishing with stone casting tiles involves the following stages:dismantling of emergency sections of the tunnel (vaults, walls);clearing the tray part of the tunnel;restoration of the section of the tunnel part of the tunnel (if the tunnel is destroyed);cleaning of the existing fittings to ensure the joint operation of the tray and the protective coating of the vault being erected;installation of pneumatic formwork for the construction of the tunnel vault with internal finishing with stone casting tiles;laying stone casting tiles;installation of the necessary fittings for the protective lining of the vault made of monolithic reinforced concrete;creation of inventory formwork;laying the concrete mixture of the monolithic part of the vault;dismantling of pneumatic and inventory formwork after gaining strength of concrete;backfilling of the trench with compaction. The main period of restoration of the observation shaft with the help of lining the walls with stone-cast basalt tiles: dismantling of floor slabs; cleaning of walls from corrosion products; injection of anti-corrosion concrete on a small filler of space at the junctions of the tunnel; reinforcement of the mine walls (in case of deep corrosion of the walls); facing the walls of the observation shaft with stone-cast basalt tiles; treatment of the inner surface of operational areas and stairs with anti-corrosion epoxy polyurethane compound "AQUAKHIM". To justify the feasibility of using the proposed technology, two options for restoring the destroyed tunnel were considered: the method using stone casting tiles; the method of replacing destroyed pipes with polyethylene ones (an open method of restoration with dismantling of the destroyed tunnel). The option of restoring the sewer tunnel using stone casting tiles is almost 3 times more economical and expedient in terms of the cost of materials compared to the use of SPIRO PE pipe. The advantage of restoring sewage tunnels in this way is the durability and resistance of this material to aggressive effects, a sufficient amount of natural material in the country, and low cost. Keywords: sewage tunnel, inspection shaft, basalt, pneumatic formwork, technological solutions, open method.

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“…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.…”

Section: Classification Of the Conse-quences Of Emergencies Occur-renmentioning

confidence: 99%

“…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.…”

Section: Literature Data Analysis and Articulation Of The Issuementioning

confidence: 99%

Approach to Assessing the Consequences of Emergencies in Sewer Tunnels

Starkova

Aleinikova

Bondarenko

2020

Architecture, Civil Engineering, Environment

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The paper deals with the approach to assessing the consequences of emergencies in sewer tunnels based on multicriteria analysis. A detailed analysis was performed of tendencies of research interests and areas in the world concerning the issue of the reliability of sewer networks. The main causes of deterioration of sewer tunnels resulting in the occurrence of emergencies were identified. A classification was proposed of the factors of their deterioration according to the following groups: production factors; factors of durability of materials of linear portions of a network; organizational and technological factors; operational factors; factors of the external operating environment. The main groups of consequences caused by emergencies were classified; in particular, the following groups were identified: ecological, economic, technical, social, innovative. The method was proposed for determining ranks of consequences of an emergency by means of the corresponding scale of ranks developed by the authors and the system of their determination. The main criteria and the range of their values were determined according to which an assessment is given and a rank is determined according to the emergency.

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Repair and refurbishment technologies for inspection shafts in deep-level sewer tunnels

Cited by 7 publications

References 1 publication

Restoration of the Damaged Sewage Collector as a Consequence of Military Aggression

Restoration of the Damaged Sewage Collector as a Consequence of Military Aggression

Organizational and Technological Solutions for the Repair and Restoration of Sewage Tunnels in the Places Adjacent to Exploration Mines

Approach to Assessing the Consequences of Emergencies in Sewer Tunnels

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