ROCK FALLS ON ROADS - MAPPING METHOD

EBOULEMENTS ET CHUTES DE PIERRES SUR LES ROUTES-METHODE DE CARTOGRAPHIE

The "mapping" committee of the study group for cliffs has developed a method of grading the risks arising from stone and rock falls on roads. This method is based on a previous survey among road operators and on an analysis of the various parameters determining stability: topography, discontinuities, vegetation, existing protecting devices, hydrology, morphological indices. It is shown how to combine these different factors to deduce several risk levels (low, medium, high, very high) shown on maps, to which are added short term particularly dangerous spots. Those maps also give indication, on the nature of the risk run, that is determined according to a volumetric classification: mass rock falls, falls of blocks of rock, falls of stones. Concrete examples are appended. (TRRL) research project IRRD no 500593.

  • Availability:
  • Corporate Authors:

    Groups d'Etudes des Falaises

    Paris,   France 
  • Publication Date: 1978-7

Language

  • French

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00316194
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: LPC 80 Monograph
  • Files: ITRD, TRIS
  • Created Date: Feb 6 1981 12:00AM