In recent years, the development of urban underground space in China, especially construction and operation subway tunnels, has greatly relieved pressure traffic. Due to imperfect planning facility, many tunnels have be built under existing utility (pipe galleries). Nevertheless, shield tunnel a great adverse impact on deformation safety pipe gallery. Therefore, this paper takes Xi’an Metro Lin...

The subway is one of the major passenger transport systems in Seoul, Korea. Over the last 30 years, the subway system has interacted with urban land use. This study aims to describe the subway system evolution and reveal the causal relations with land rent and population distributions in conjunction with the evolution of the subway system. Extensive and rapid expansion of subway networks have i...

In the early twentieth century, New York City’s population, developed land area, and subway network size all increased dramatically. e rapid expansion of the transit system and land development present intriguing questions as to whether land development led subway growth or if subway expansion was a precursor to real estate development. e research described in this article uses Granger causalit...

Urbanization is a worldwide process that recently has culminated in wider use of the subsurface, determining significant interaction between groundwater and underground infrastructures. This can result infiltrations, corrosion, stability issues for subsurface elements. Numerical models are most applied tools to manage these situations. Using MODFLOW-USG combining Wall (HFB) DRN packages, this s...

Problem. The most important task in the field of construction and operation subway tunnels is to solve issue assessing their technical condition. Timely detection, objective assessment development process damage defects underground structures timely elimination are key successful long-term operation. Goal. goal find causes destruction elements for analysis gaining experience prevention methods ...

The prevention and treatment of epidemic is always an urgent problem faced by the human being. Due to the special space structure, huge passenger flow and great people mobility, the subway lines have become the areas with high epidemic transmission risks. However, there is no recent study related to epidemic transmission in the subway network on urban-scale. In this article, from the perspectiv...

Radio access technologies (RATs) are a key topic in railways, enabling them better service rendering terms of shorter headways between trains, higher safety levels and customer satisfaction. Very often, these railway RATs need lot time to be developed, tested put into service, which implies lack efficiency bottlenecks the evolution systems. To solve this situation, an emulation platform that co...

To alleviate traffic congestion, one of the most pressing urban challenges in developing countries, Beijing’s government has been investing increasingly in subway infrastructure. In this study, using fine-scale daily traffic records from 2009 to 2013, we perform a regression discontinuity design to examine the average treatment effects of subway openings on traffic conditions in Beijing from 20...