MEASURING OF ROCK MOVEMENT (DURING DRIVING) IN A TUNNEL SECTION UNDER PRESSURE AND CONSEQUENCE DRAWN FOR THE CHOICE OF DRIVING METHODS /IN GERMAN/

THE SAFETY OF THE INSTALLED LINING CAN BE TESTED IN COMPRESSIONAL ROCK BY MEANS OF SIMPLE MEASUREMENTS OF THE ROCK MOVEMENT DURING DRIVING AND LINING WORK. THE MEASUREMENTS SHOW THAT THE ROCK MOVEMENT DIES AWAY RAPIDLY AFTER NAPPING. ITS EFFECT ON THE INTERIOR OF THE ROCK IS SMALL, IF THE LINING IS EXECUTED SO THAT IT CAN ABSORB THE FORCES OF STRESS REDISTRIBUTIONS AS QUICKLY AS POSSIBLE. MEASUREMENTS SHOW THAT, AFTER THE ROCK MOVEMENT HAS DIED AWAY, IT MAY RESTART, IF FOLLOWING WORKING PROCESSES AGAIN DISTURB THE ACHIEVED EQUILIBRIUM. ABOVE ALL, IT IS SEEN THAT EVERY UNDERMINING OF THE SIDE WALL FOUNDATIONS MAY PRODUCE STRONG MOVEMENTS WHICH START PARTICULARLY RAPIDLY. SPECIAL ATTENTION MUST BE PAID TO THE ESTABLISHMENT OF A FAVORABLE LINE OF PRESSURE PARTICULARLY WITHIN THE SIDE WALL AREA. LINING WITH SHOT CONCRETE, REINFORCED IF NECESSARY BY STEEL ARCHES OR ROCK BOLTING, IS SUPERIOR TO LINING WITH WOOD OR STEEL ARCH TIMBERING. /AUTHOR/

  • Supplemental Notes:
    • Vol 2, No 2, PP 101-111
  • Corporate Authors:

    Rock Mechanics

    ,    
  • Authors:
    • Dworschak, G
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00229942
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 10 1971 12:00AM