SLOPE STABILITY IN ROAD CONSTRUCTION

Slope failure is a common problem for roads in mountainous areas. This paper discusses several aspects of slope failure, slope design, and slope stabilisation. Causes of slope failure include removal of lateral support, pressure from water and structures, earthquakes, removal of underlying support, lateral pressure, weak material, faults, slope orientation, weathering, and changes in intergranular forces. Types of slope failure include falls, topples, slumps, glides, slides, and creep. Investigations of slope failure should be flexible, and require mapping and data collection, field studies, and laboratory testing. Appropriate slope design considerations are discussed for igneous rocks, metamorphic rocks, sedimentary rocks, sands, and clays. Slope stabilisation measures include excavation, incorporation of retaining structures, use of reinforced earth, use of geosynthetic materials, and drainage. Drainage has the widest applicability for improving the stability of slopes or correction of slides, because it reduces the effectiveness of excess pore water pressure, one of the principal causes of instability. Most slope stability problems after construction can be prevented altogether, or corrected by slope design using information from geotechnical studies.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01170386
• Corporate Authors:

  BUREAU OF RESEARCH AND STANDARDS

  EDSA, DILIMAN
  QUEZON CITY,   Philippines 
• Authors:
  • ATIENZA, J T
• Publication Date: 1996-12

Language

• English

Media Info

• Features: References;
• Pagination: p. 24-9
• Serial:
  • DPWH TECHNICAL JOURNAL
  • Volume: 8
  • Issue Number: 2
  • Publisher: BUREAU OF RESEARCH AND STANDARDS
  • ISSN: 0117-0386

Subject/Index Terms

• TRT Terms: Classification; Design; Drainage; Failure; Highways; Mountains; Pressure; Rocks; Slope stability; Slopes; Soils; Test procedures
• ITRD Terms: 8513: Classification; 9011: Design (overall design); 2937: Drainage; 5520: Failure; 2755: Highway; 4048: Mountain; 5412: Pressure; 4154: Rock; 2831: Slope (terrain); 5783: Slope stability; 4156: Soil; 6288: Test method
• Subject Areas: Design; Geotechnology; Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00739554
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Aug 28 1997 12:00AM