A MODEL EXPERIMENT ON THE SLOPE FAILURE OF STRATIFIED ROCK (IN JAPANESE)

EVERY STRATIFIED ROCK CONTAINS AT LEAST TWO SETS OF JOINTS ORIENTED AT APPROXIMATELY RIGHT ANGLES AND THESE JOINTS CONSTITUTE A SOURCE OF MECHANICAL WEAKNESS. TO INVESTIGATE THE SLOPE FAILURE OF STRATIFIED ROCK, A MODEL EXPERIMENT IS CARRIED OUT USING A PILE OF BLOCKS MADE OF VINYL CHLORIDE. THE BLOCKS ARE PILED ON A HORIZONTAL PLATE IN THE HORIZONTAL STRATA (CHECKED JOINT AND STAGGERED JOINT) AND THE SLOPE FAILURE IS CAUSED BY GRADUALLY INCREASING THE INCLINATION ANGLE OF THE PLATE. FROM THE EXPERIMENTAL RESULTS, IT CAN BE CONCLUDED THAT SLOPE FAILURE OCCURS EVEN IF THE SLOPE ANGLE OF THE STRATIFIED LAYER IS LESS THAN THE FRICTIONAL ANGLE BETWEEN THE BLOCKS AND THAT THE CRITICAL SLOPE ANGLE OF THE STRATIFIED LAYER BELOW WHICH THE SLOPE STANDS DECREASES WITH THE INCREASE OF THE SLOPE HEIGHT. THE MAIN REASON WHY THE ABOVE RESULTS ARE OBTAINED IS THAT THE SLOPE FAILURE OF THE STRATIFIED PILE OF BLOCKS DEPENDS NOT ONLY ON THE SLIDING MOTION BETWEEN THE STRATIFIED LAYERS BUT ALSO ON THE ROTATING MOTION OF A CERTAIN GROUP OF BLOCKS. /RRL/A/

  • Supplemental Notes:
    • No 11b, pp 503-510
  • Corporate Authors:

    Kyoto University

    Disaster Prevention Research, Gokasho
    Uji City, Kyoto,   Japan 
  • Authors:
    • Murayama, S
    • Ishii, Y
  • Publication Date: 1968-3

Subject/Index Terms

Filing Info

  • Accession Number: 00234918
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Oct 19 1970 12:00AM