Using an electronic detonator system and expanded blast patterns to prevent sympathetic detonation at Powder River Basin coal mines
Conference
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OSTI ID:20674574
- Orica USA Inc., Watkins, CO (United States). Advanced Mining Solutions
This paper describes a systematic approach to prevent cast blast holes from detonating sympathetically through the use of the electronic initiation and expanded blast patterns. In-situ measurements were recorded from pressure probes, velocity of detonation probes and near field accelerometers, along with digital images generated from a high speed CCD camera. Large diameter angled drill holes were also checked for any measurable amount of deviation by a cable type borehole measurement tool. The field measurements provided the scientific evidence, statistical data, and documentation necessary to develop a sound method or a 'road map' that would minimize and in some situations prevent the occurrence of blast hole sympathetic detonation. 2 refs., 3 figs.
- OSTI ID:
- 20674574
- Country of Publication:
- United States
- Language:
- English
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