Abstract
The article discusses optimal versions for placement of ventilation systems for deep-laid underground lines, performed in a closed way, with the removal of the ventilation chamber from the ventilation output and placing it either in the ventilation shaft or in a specially constructed ventilation chamber located near the trunk, which significantly simplifies the design of excavation, and as a result, speed up its construction. To reduce the construction time, it is proposed to perform parallel work on the vent development and the ventilation chamber, including the possible installation of process equipment in parallel with the mining operations during the construction of the metro by the underground method.
Highlights
Under modern conditions, ensuring high rates of design and construction of metro facilities, caused by active development of underground space in Moscow, is an important scientific and technical challenge
The most preferred method of construction of subways is an open method that allows you to quickly, safely and with high quality to perform construction and installation works, the importance and relevance of saves and underground method, which is optimal for deep in-ground stations in dense urban areas and other situations where the construction of an open way is impossible or not optimal
Modern ventilation systems are distinguished by a high degree of factory readiness, it is important to find the best ways to parallelize the construction of workings and installation of process equipment, including by possible transferring the placement of ventilation systems from the ventilation of mine workings either into the trunk or into a specially constructed ventilation chamber located near the trunk
Summary
Under modern conditions, ensuring high rates of design and construction of metro facilities, caused by active development of underground space in Moscow, is an important scientific and technical challenge. It is known that in modern practice of construction subways underground main mine workings including an open-line tunnels are highly mechanized tunneling complexes with the use of imported and domestic complexes of mining machines, including a highly mechanized panel Board complexes with clay and gidroperita. This allows you to achieve high penetration rates while ensuring proper safety of mining operations. Paradoxical situations arise when the construction of auxiliary workings is comparable in time and cost with the construction of main workings
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