Abstract
The work is devoted to research associated with the construction of the tunnels. The article presents the characteristics of the largest foreign railway tunnels. Indicates that the speed of tunnel construction are significantly affected by the transport unit for muck removal from the face. To illustrate, the transport system that was used for the longest in the world the Gotthard base tunnel. Based on the analysis of this transport installation established that the speed of the tunnel could be increased if you apply to a tubular belt conveyor with variable-length transportation for muck removal from the face. The paper presents the results of performed engineering studies on the new transport installation operating with varying length of transportation. Dependences which can determine the technological effectiveness of application, when conducting tunnels, tubular belt conveyor with changeable length of transportation.
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