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Mining Publication: Shotcrete Design and Installation Compliance Testing: Early Strength, Load Capacity,Toughness, Adhesion Strength, and Applied Quality
Keywords: Ground control Ground falls Metal mining Shotcrete Underground mining 
 Weak rock
Original creation date: April 2015
Authors: LA Martin, CC Clark, JB Seymour, MA Stepan
Report of Investigations - April 2015
Download PDF Document (49.49 MB)
NIOSHTIC2 Number: 20046014
Spokane, WA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 2015-107, 2015 Mar; :1-108
The National Institute for Occupational Safety and Health (NIOSH) conducted a research study to document and develop safe practices for the use of shotcrete as ground support in underground mines, particularly in underground metal mines operating in weak host rock. Shotcrete is the generic name for a mixture of cement, sand, fine aggregate, and water that is applied pneumatically and compacted dynamically under high velocity. The objective of this research is to reduce mine worker fatalities and injuries resulting from rockfall accidents. Although the information, techniques, and technology covered in this publication will impact both the mining and construction sectors, the primary audience is the mining industry with a focus on underground metal mines operating in weak ground conditions. The information and practices covered in this publication relating to the use of shotcrete can be put to use by mining professionals towards improving mine design and ground control plans. The guidance and practices reported in this document will help safety auditors, mining companies, and shotcrete suppliers in improving their shotcrete product specifications and the performance of ground support systems, evaluating ground control plans, and assessing shotcrete quality control. Ground control safety can be improved by providing these groups with a better understanding of the use of shotcrete in weak rock conditions, field test methods and equipment for measuring the strength properties of shotcrete directly at the mine site, and a practical means of conducting quality control during shotcrete applications.
Cover of RI 9697, Shotcrete Design and Installation Compliance Testing: Early Strength, Load Capacity,Toughness, Adhesion Strength, and Applied QualityReport of Investigations - April 2015
Download PDF Document (49.49 MB)
NIOSHTIC2 Number: 20046014
Spokane, WA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 2015-107, 2015 Mar; :1-108
See Also
Developments in Sealant Support Systems for Ground Control
Diagnosing and Controlling Moisture-Sensitive Roof in Coal Mines
Durable Support for Western U.S. Underground Metal Mines
Early Strength Performance of Modern Weak Rock Mass Shotcrete Mixes
Electromagnetic Noise in Lucky Friday Mine
The Long-term Performance of Surface Support Liners for Ground Control in an Underground Limestone Mine
Roof Screening for Underground Coal Mines: Recent Developments
Technology News 501 - Measuring Very Low Air Velocities in Underground Metal/Nonmetal Mines
Technology News 542 - Field Use Round Determinate Panel Test System
Variation of Horizontal Stresses and Strains in Mines in Bedded Deposits in the Eastern and Midwestern United States
Page last reviewed: April 24, 2015
Page last updated: April 24, 2015
Content source: National Institute for Occupational Safety and Health, Mining Program
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