<p>With the increasing population and the consequent needs for transport facilities, the construction of tunnels in urban environments is fast growing. Tunneling at each depth of the soil, causes changes in the earth&rsquo;s surface; this is more important ...

<p>We present two examples of ground deformation characterization in the metropolitan area of Vancouver using advanced InSAR. The first regards the construction of the Canada Line, an LRT system connecting Vancouver&rsquo;s International Airport to the downtown ...

<p>The San Francisco Central Subway project is a challenging modern example of urban tunneling in limited space conditions. This paper discusses the project challenges and solutions at the Central Subway project, with a focus on TBM and continuous conveyor ...

<p>The utilization of underground space becomes a more important issue in megacities of the world in order to build more functional and advanced cities. However, because a lot of underground structures such as lifelines have already been developed in the megacities, ...

<p>This monograph is intended to be used as a &ldquo;PB Guideline&rdquo; for assessing tunnelling-induced risks to adjacent structures in urban environments. It is expected that it will also promote awareness of such risks among PB engineers<br />who are involved ...

<p>Different challenging tunnel projects in the downtown area of the city of Mainz in Germany are presented. These tunnels run parallel in a distance of 4 m to max. 50 m. The tunnels were built in soft soil conditions consisting of filling, clay and marl layers ...

<p>The Kowloon Southern Link (KSL) is a 3.8 km underground railway project in a busy urban area with complex geological and alignment constraints.A key challenge for the project is to construct a critical section of the tunnels above the existing MTR tunnels ...

Buried tunnels with circular cross section, such as urban undergrounds are very popular in transportation engineering. The seismic behavior of such structures during operation is of importance. There exist different closed form solutions, such as Penzien and ...

<p>A brief overview of jet grouting in Brazil is followed by &ldquo;why and when&rdquo; basics in relation to ground improvement for safe tunnel excavating. A number of case histories are reported - mostly NATM tunnels involving what were seen as difficult, ...

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