DIAMOND DRILLING FOR FOUNDATION EXPLORATION

DETAILS ARE PRESENTED OF CURRENT PROCEDURES IN DIAMOND DRILLING, INCLUDING MODIFICATION INTRODUCED AS A RESULT OF EXPERIENCE. IT IS CONSIDERED HIGHLY DESIRABLE THAT TOPOGRAPHICAL AND GEOLIGICAL MAPPING SHOULD PRECEDE DIAMOND DRILLING. THE DRILLING IS ONLY ONE FORM OF EXPLORATION WHICH MUST BE COORDINATED WITH GEOLOGICAL MAPPING, SUB-SURFACE EXPLORATION BY TRENCHING, TEST PITS, ADITS, ETC, AND BY GEOPHYSICAL METHODS, ESPECIALLY SEISMIC REFRACTION. THE FOLLOWING DRILLING EQUIPMENT IS USED: DRILLING MACHINE EQUIPPED WITH HYDRAULIC FEED MECHANISM, DRILLING MACHINE AS LARGE AS PRACTICABLE, THE LARGEST STANDARD SIZE CORE BARRELS AND BITS, N-TYPE CORE BARRELS WITH BOTTOM DISCHARGE BITS, TRIPLE-TUBE CORE BARREL, RETRACTABLE TRIPLE TUBE CORE BARREL, AND CORE ORIENTATION DEVICE. DRILLERS ARE INSTRUCTED THAT THE EMPHASIS IS ON COMPLETE RECOVERY AND MAXIMUM INFORMATION RATHER THAN ON MAXIMUM DRILLING RATE. CORE IS PLACED IN BOXES LIFT BY LIFT AS IT IS DRILLED. THE CORES ARE NOT REMOVED FROM THE SITE UNTIL LOGGED BY THE GEOLOGIST, AFTER WHICH THEY ARE TAKEN INTO STORAGE. THE CORES FROM EACH HOLE ARE PHOTOGRAPHED AS SOON AS POSSIBLE AFTER COMPLETION OF THE HOLE. USEFUL INFORMATION IS DERIVED FROM THE DRILLING PROCESS, GEOLOGICAL EXAMINATION OF THE CORE, AND TESTS IN THE DRILL HOLE. THESE TEST ARE REVIEWED.

• Supplemental Notes:
  • Vol Ce 9, NO 1, PP 95-100, 3 FIG, 3 REF, 1 APP
• Authors:
  • Moye, D G
• Publication Date: 0

Media Info

• Serial:
  • Inst Engrs Civil Eng Trans /Australia/
  • Issue Number: 0

Subject/Index Terms

• TRT Terms: Core samples; Diamond drilling; Drilling; Drilling machines; Exploration; Foundations; Geological surveying; Mapping; Mines; Photography; Pits; Refraction; Seismicity; Test holes; Topographic maps; Trenching; Tunnel shafts; Tunnels
• Uncontrolled Terms: Adits; Seismic refraction
• Old TRIS Terms: Core barrels; Core drilling; Cores; Foundation exploration; Geologic mapping; Subsurface explorations; Test pits; Topographic mapping
• Subject Areas: Bridges and other structures; Geotechnology; Highways;

Filing Info

• Accession Number: 00229040
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 15 2004 2:38AM