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Mining Publication: Analysis of the Design and Performance Characteristics of Pumpable Roof Supports
Keywords: Pumpable roof supports Support design and selection
Original creation date: August 2017
Authors: T Batchler
Peer Reviewed Journal Article - August 2017
Go to Web Page
NIOSHTIC2 Number: 20049130
Int J Min Sci Technol 2017 Jan; 27(1):91-99
Pumpable roof supports are currently being used to provide a safe working environment for longwall mining. Because different pumpable supports are visually similar and installed fundamentally in the same manner as other supports, there is a tendency to believe they all perform the same way. However, there are several design parameters that can affect their performance, including the cementitious material properties and the bag construction practices that influence the degree of confinement provided. A full understanding of the impact of these design parameters is necessary to optimize the support application and to provide a foundation for making further improvements in the support performance. This paper evaluates the impact of various support design parameters by examining full-scale performance tests conducted using the National Institute for Occupational Safety and Health (NIOSH) Mine Roof Simulator (MRS) as part of manufacturers’ developmental and quality control testing. These tests were analyzed to identify correlations between the support design parameters and the resulting performance. Based on more than 160 tests over 7 years, quantifiable patterns were examined to assess the correlation between the support dimensions, cementitious material type, wire pitch, and single-wall vs. dual-walled bag designs to the support capacity, stiffness, load shedding events, and yield characteristics.
First page of Analysis of the design and performance characteristics of pumpable roof supportsPeer Reviewed Journal Article - August 2017
Go to Web Page
NIOSHTIC2 Number: 20049130
Int J Min Sci Technol 2017 Jan; 27(1):91-99
See Also
Design Methodology for Standing Secondary Roof Support in Longwall Tailgates
Longwall Tailgates: The Technology for Roof Support Has Improved, but Optimization is Still Not There
Optimizing Secondary Roof Support with the NIOSH Support Technology Optimization Program (STOP)
Pillar and Roof Span Design Guidelines for Underground Stone Mines
Pumpable Roof Supports: Developing Design Criteria by Measurement of the Ground Reaction Curve
Rock Mass Behavior and Support Response in a Longwall Panel Pre-Driven Recovery Room
Standing Support Alternatives in Western Longwalls
Standing Support Alternatives in Western United States Longwalls
Technology News 482 - Ground Support Safety Training Video
Updating the NIOSH Support Technology Optimization Program (STOP) With New Support Technologies and Additional Design Features
Page last reviewed: September 18, 2017
Page last updated: September 18, 2017
Content source: National Institute for Occupational Safety and Health, Mining Program
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