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Mining Publication: A Hydrodynamics-Based Approach for Predicting the Blast Damage Zone in Drifting as Demonstrated Using Concrete Block Data
Keywords: Blasting Data analysis Roof falls
Original creation date: August 2009
Authors: DR Tesarik, WA Hustrulid
Peer Reviewed Journal Article - August 2009
Download PDF Document (0.90 MB)
NIOSHTIC2 Number: 20036018
Blasting Fragm 2009 Aug; 3(2):141-166
Rock falls involving a relatively small amount of material are a leading cause of injuries in underground mines in the United States. A contributing factor is unwanted blast damage and over-break. A goal of the United States National Institute for Occupational Safety and Health is to reduce the number of ground fall-related accidents by improving drift driving practices through the introduction of perimeter control blast designs. This paper presents a blast design technique based on a hydrodynamic method. Using commonly available explosive and geometry data, the theoretical particle velocity is calculated as a function of distance away from a cylindrical charge. A calibration factor is introduced to account for actual conditions by comparing the predicted values to a set of field data. The calibrated curve can then be applied for design. The paper introduces modifications to account for different explosives from those used in a calibration test. The application of the approach is demonstrated with respect to a data set from a large-scale concrete block test.
Image of publication A Hydrodynamics-Based Approach for Predicting the Blast Damage Zone in Drifting as Demonstrated Using Concrete Block DataPeer Reviewed Journal Article - August 2009
Download PDF Document (0.90 MB)
NIOSHTIC2 Number: 20036018
Blasting Fragm 2009 Aug; 3(2):141-166
See Also
An Analysis and Prevention of Flyrock Accidents in Surface Blasting Operations
Analysis of Multiple Seam Stability
A Case Study Examination of Two Blast Rounds at a Nevada Gold Mine
Determination of Sound Exposures (DOSES): Software Manual and Implementation Guide
Make it Safer with Roof Screen
Optimizing Secondary Roof Support with the NIOSH Support Technology Optimization Program (STOP)
Proceedings: New Technology for Ground Control in Multiple-seam Mining
Task Analysis
Technology News 483 - Safety Training Tools for Rock Scaling Personnel
Technology News 536 - NIOSH Develops New Software to Analyze and Reduce Noise Exposure
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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