UNDERGROUND INVESTIGATION FOR LARGE EXCAVATION AT VICTORIAN ARTS CENTRE

THE NORTH END OF THE VICTORIAN ARTS CENTRE WILL BE PLACED UNDERGROUND TO AN AVERAGE DEPTH OF 90 FT ON A SITE OF 1-3/4 ACRES IN AREA. A SITE INVESTIGATION HAS REVEALED THE FOLLOWING STRATUM IN ORDER OF DEPTH: (A) FILLING OF CLAY RUBBLE AND GRAVEL TO 25 FT; (B) SOFT ORGANIC SILTY CLAY AT DEPTHS OF 40-100 FT BELOW GROUND; (C) SAND AND GRAVEL AQUIFER VARYING FROM 0-25 FT THICK ON THE SOUTHERN HALF OF THE SITE; (D) SILURIAN MUDSTONE BEDROCK AT DEPTHS VARYING FROM 75-100 FT BELOW THE SURFACE. BASED ON THE NATURE OF THESE MATERIALS AND THE ARCHITECTURAL REQUIREMENTS THE SOLUTION ADOPTED CONSISTS OF A MASSIVE PERIMETER RETAINING WALL SPANNING BETWEEN A STRUTTING FRAME AT THE SURFACE AND THE BEDROCK AT THE BOTTOM. SEVERAL TYPES OF WALL AND CONSTRUCTION METHODS HAVE BEEN ASSESSED INCLUDING EXCAVATION WITHIN SHEETING AND EXCAVATION BY MINING METHODS. THESE METHODS MAY BE ASSISTED BY TECHNIQUES SUCH AS GROUND FREEZING, BENTONITE DISPLACEMENT AND PRESSURE GROUTING. FIELD AND LABORATORY INVESTIGATIONS OF THE RELEVANT WATER, SOIL, AND ROCK PARAMETERS ARE DESCRIBED TOGETHER WITH AN ANALYSIS OF THE ROCK STABILITY FOR THE COMPLETED STRUCTURE. /AUTHOR/

  • Authors:
    • Johnson, R M
  • Publication Date: 0

Language

  • English

Media Info

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Filing Info

  • Accession Number: 00230453
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Conf Paper
  • Files: TRIS
  • Created Date: Nov 18 1973 12:00AM