TECHNIQUE AND APPLICATIONS OF PROGRESSIVE CONTROLLED EXPLOSIONS

TITRE TECHNIQUE ET APPLICATIONS D'EXPLOSIONS PROGRESSIVES ET CONTROLEES.

A PROGRESSIVE CONTROLLED EXPLOSION REQUIRES THAT THE SHOCK CAUSED BY THE DETONATION BE ELIMINATED AND THE EXPLOSION CONTROLLED. THE DYNAMIC EFFECT OF THE SHOCK CAN BE REDUCED OR EVEN AVOIDED BY DAMPING THE CHARGES IN THE BOREHOLES WITH PLUGS OR BY PROPORTIONING THE QUANTITY OF EXPLOSIVES USED, IT IS ALSO POSSIBLE TO CONTROL OR "CHANNEL" THE EXPLOSION IN THE DIRECTION WANTED BY AN APPROPRIATE LOCATION OF THE BOREHOLES. THE CRACK MECHANISM IS EXAMINED TAKING INTO ACCOUNT THE EFFECT OF THE BOREHOLE DIAMETER, EMPTY HOLES AND ROCK CHARACTERISTICS ON CRACKING AND "CHANNELIZATION" OF THE EXPLOSION. THE CONDITIONS NECESSARY FOR A CONTROLLED AND PROGRESSIVE EXPLOSION WITHOUT VIBRATIONS ARE DISCUSSED AND DATA GIVEN ON THE OPTIMUM POSITIONING OF THE BOREHOLES AND CHARGES. THE APPLICATION AND IMPORTANCE OF THESE TECHNIQUES IN THAT CIVIL ENGINEERING FIELD ARE STUDIED.

• Corporate Authors:

  Association des Fabricants Belges & Explosifs, SA

  PRB 4133, Usine de Clermont-S-Huy
  Brussels,   Belgium 
• Publication Date: 1972-4-6

Language

• French

Media Info

• Features: Figures; References;
• Pagination: p. 41-52
• Serial:
  • Explosifs
  • Volume: 26
  • Issue Number: 2

Subject/Index Terms

• TRT Terms: Boreholes; Cylindrical bodies; Explosions; Fracture mechanics; Presplitting; Rocks
• ITRD Terms: 5188: Blasting; 5711: Bore hole; 3655: Construction; 2812: Cutting (earthworks); 5559: Damping; 6499: Depth; 2885: Layout; 6402: Radius; 5471: Shock; 5575: Stress (in material); 9084: Use; 5558: Vibration
• Subject Areas: Construction; Geotechnology; Highways;

Filing Info

• Accession Number: 00081689
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Feb 27 1975 12:00AM