SLOPE STABILITY EVALUATION OF RAILWAY EMBANKMENT UNDER RAINFALL FOR RAIL-TRANSPORT OPERATION CONTROL

The rail-transport operation control plays an important role in enhancing the safety of train under rainfall and is generally based on statistical analysis or empirical method of the collapsed slopes by rainfall. There is a few operation control system based on the engineering approach except some case studies reported. Therefore, in this paper, it is suggested that new possibility of rail-transport operation control during rainfall could be made by clarifying the relationship between the stability of railway embankment and rainfall introducing partial saturation concept of ground. Infiltration of rainfall causes railway embankment to be unstable and may result in failure. Basic relationship between the rainfall and stability of railway embankment is defined to analyze the stability of embankment by rainfall. A pressure plate test is also performed to obtain soil-water characteristic curve of unsaturated soil. Based on this curve, the variables in the shear strength function and permeability function are also defined. These functions are used for the numerical model for evaluation of railway embankments under rainfall. As comparing the model and case studies, the variation of shear strength, the degree of saturation and pore-water pressure for railway embankment during rainfall can be predicted and the safety factor of railway embankment can be expressed as a function of rainfall amount, namely the rainfall index. Therefore, it is judged that this rainfall index can be a good tool for rail-transport operation control. For the covering abstract see ITRD E122683.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0947644490
• Corporate Authors:

  ENGINEERING TECHNICS PRESS

  46 CLUNY GARDENS
  EDINBURGH,   United Kingdom  EH10 6BN
• Authors:
  • Kim, H K
  • PARK, Y K
  • SHIN, M H
• Publication Date: 2002

Language

• English

Media Info

• Features: References;
• Pagination: 11 p.
• Monograph Title: THE MOVEMENT MONITORING OF A RAILWAY LINE - CTRL 440 - A CASE STUDY
• Serial:
  • PROCEEDINGS OF THE INTERNATIONAL CONFERENCE RAILWAY ENGINEERING 2002, HELD LONDON, UK, JULY 2002 - CD ROM
  • Publisher: ENGINEERING TECHNICS PRESS

Subject/Index Terms

• TRT Terms: Conferences; Earthwork; Embankments; Evaluation and assessment; Moisture content; Railroad tracks; Rain; Slope stability; Soil mechanics
• ITRD Terms: 8525: Conference; 3653: Earthworks; 2801: Embankment; 9020: Evaluation (assessment); 5920: Moisture content; 1062: Railway track; 2507: Rain; 5783: Slope stability; 5755: Soil mechanics
• Subject Areas: Data and Information Technology; Geotechnology; Planning and Forecasting; Railroads;

Filing Info

• Accession Number: 00982653
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0-947644-49-0
• Files: ITRD
• Created Date: Dec 2 2004 12:00AM