Development of mobile systems for construction drainage and dewatering for pipelines, tunnels and metropolitans

Introduction. Construction of underground facilities such as pipelines, tunnels and subways in low-permeable wa­ter-saturated mobile soils is labor-intensive, expensive and dangerous. Construction dewatering systems remove a significant portion of water from such soils, turning them into stable rocks suitable for efficient excavation works. The development of mobile drainage and construction dewatering systems for pipelines, tunnels and subways can be carried out using the methodology of water and air filtration theory in urban construction, the method of computer modeling of fluid filtration and operations based on using spreadsheets, with the involvement of new artificial intel­ligence technologies and machine learning.

Methods and materials. The working hypothesis of the research is the idea of creating a comprehensive approach to effectively solve the problem of groundwater flooding during the construction of linear projects, underground pipelines, tunnels and subways in low-permeable water-saturated soils. The methods of filtration theory used in the work are divided into analytical and numerical. The analytical operator method is used to solve the problems of non-stationary filtration of groundwater in construction dewatering systems. Modeling with spreadsheets applies to several processes of construction operations arrangement. The finite difference method in spreadsheets is used to solve filtration models of dewatering systems that cannot be solved analytically. In addition, a new feature is the use of spreadsheets to model organization and technology of construction drainage and dewatering. The possibility of using self-learning recursive computer programs is considered.

Discussion. A review of domestic and foreign studies has shown that there are no publications related to the topic of the article. Certain issues relevant to this paper and referred in particular to the construction of underground pipelines, tunnels and subways have been studied. At the same time, the features of drainage of low-permeable water-saturated mobile soils are analyzed. Mobile sections of construction drainage and dewatering systems are proposed for consideration as an example, their installation and dismantling time being comparable with that of building the trench during open cut construction or the shield speed during tunneling, for example, a subway.

Conclusion. Thus, it is proposed to develop systems for mobile sections of construction drainage and dewater­ing for underground pipelines, tunnels and subways based on the new integrated approach with the use of the methodology of the theory of water and air filtration in urban construction, methods of computer modeling of fluid filtration and construction operations based on spreadsheets, as well as new technologies of artificial intelligence and machine learning.

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