Metro Doha Green Line – More than 30 km of tunnel in 18 months

Abstract

The capital of Qatar, Doha is being increasingly turned into a modern centre for industry, trade and sport. One essential precondition for this is the development of high‐capacity infrastructure with modern means of transport. This includes the construction of an underground railway network, which has to be completed in a very short time due to the football World Cup taking place in Qatar in 2022. The (part) project ”Metro Green Line Underground“ was awarded in summer 2013 to a Joint Venture comprised of Porr (lead), the Saudi Binladin Group and the local construction company HBK. It includes the turnkey completion of the underground part of the Green Line in the future underground system. This includes two tunnels with a length of 17 km each, six stations, crossover structures, several emergency exits and 32 cross passages and two road underpasses. The shield drive for the running tunnels began in late summer 2014 and could be completed after only 18 months of construction time in early 2016. In addition to explaining how the simultaneous operation of six EPB machines was successfully mastered, this article also describes the conventional tunnelling of the various connection and underpass structures under inner‐city conditions.

Inventory Management of Railway Logistics Park Based on Artificial Neural Network

“…With the development of information technology (IT), the economic advantages of railway logistics have been highlighted in production and operation (P&O), and infrastructure. By virtue of railway development and resource allocation, railway logistics can fully integrate various functions of modern logistics, such as transport, storage, containerization, and processing [4][5][6][7][8].…”