Safety of Deep Slopes Excavated During Construction of Underground Structures

A technology of deep slope excavation has been applied during the construction of the Prague subway in the suburbs. When excavation is a cheaper alternative in comparison to driving, this technology is used when appropriate conditions are expected on site. From the point of view of the environment, the steeper the slope is, the loss of possible smaller building lots is less. This means that during the construction of the underground structure, the construction of residential buildings and civic amenities can always be in progress in larger areas. Moreover, the excavation of slopes is cheaper the steeper the slope is. For given internal parameters an optimal slope can be obtained. On the other hand, if some internal parameter is unknown, it can be a design parameter of the optimization. Similarly, for vertical slopes, the technique of nailed soil can be applied. The optimization in this case is attained from the professional program PLAXIS. This program can be connected with scale modeling on physically equivalent materials. Application to completed construction of one part of the Prague subway will be carried out. The material parameters are given, the process of construction is known, so that a real comparison can be made. The slope of approximately 50m height belongs to an exception in the area of applications to the subway construction. Higher slopes are known from tailing dams (deposits of open pit mines), for example, attaining up to 80m. In the latter case, measurement equipment can be installed in the slope to observe its behavior. This is not the case in our study; the slopes have to be designed in the correct way in order not to fail.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/1845641795
• Corporate Authors:

  WIT Press

  Ashurst Lodge
  Ashurst, Southampton  United Kingdom  SO40 7AA
• Authors:
  • Procházka, P
  • Dolezel, V
• Conference:
  • Urban Transport XII. Urban Transport and the Environment in the 21st Century
  • Location: Prague , Czech Republic
  • Date: 2006-7-12 to 2006-7-14
• Publication Date: 2006-7

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: PP 409-418
• Monograph Title: Urban Transport XII. Urban Transport and the Environment in the 21st Century

Subject/Index Terms

• TRT Terms: Construction; Construction engineering; Construction safety; Embankments; Railroad construction; Slope stability; Slopes
• Uncontrolled Terms: Construction costs; Penalty formulation; Slope height
• Geographic Terms: Prague (Czech Republic)
• Subject Areas: Construction; Geotechnology; Highways; Railroads; Safety and Human Factors; I51: Earthworks and Soil Drainage;

Filing Info

• Accession Number: 01037438
• Record Type: Publication
• ISBN: 1845641795
• Files: TRIS
• Created Date: Nov 28 2006 11:31AM