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Mining Contract: Development of a Low Cost LIDAR Ground Control Hazard Detecting Network
Keywords: Ground control
This page is archived for historical purposes and is no longer being maintained or updated.
Contract #
200-2016-91155Start Date
9/1/2016End Date
8/31/2018Research Concept
In underground mines, many roof falls and pillar failures are preceded by small accelerating movement and therefore can often be predicted, if the appropriate measurements can be taken. If detected in time, mine workers might be able to remediate the failing structures, or at minimum have advance notice that they need to evacuate the area. Using new, small, inexpensive, solid-state Light Detection and Ranging (LIDAR) scanners that can detect roof and rib change of a millimeter or smaller, this research could result in an early warning system for mines.
Contract Status & Impact
This contract is complete. To receive a copy of the final report, send a request to mining@cdc.gov.
Roof and pillar failures constitute a real hazard in many underground mines. The current method used to predict failure of these structures in order to have time to do something about them requires measurements using a large number of extensometers. The cost of installing these instruments throughout a typical mine is prohibitive. However, new, solid-state LIDAR scanners are becoming increasingly less costly. By integrating these solid-state LIDAR scanners and inexpensive peer-to-peer line of sight wireless networking, such a system could effectively serve the same purpose as more costly systems and allow more mines to take advantage of this kind of early detection and warning technology.
Additionally, inexpensive sensors for environmental monitoring can be attached to each node at underground intersections in order to detect temperature, relative humidity, dust, vibration, light, barometric pressure, CO, CO2, O2, H2, CH4, or SO2, offering even more information to mine workers underground and operators on the surface.
See Also
60 Years of Rockbursting in the Coeur D'Alene District of Northern Idaho, USA: Lessons Learned and Remaining Issues
Comparison of Ground Conditions and Ground Control Practices in the United States and Australia
Determination of In Situ Deformation Modulus for Cemented Rockfill
Dynamic Failure in Deep Coal: Recent Trends and a Path Forward
Horizontal Stress and Longwall Headgate Ground Control
The Long-term Performance of Surface Support Liners for Ground Control in an Underground Limestone Mine
Numerical Model Calibration for Simulating Coal Pillars, Gob and Overburden Response
Roof Screening for Underground Coal Mines: Recent Developments
Seismic Event Data Acquisition and Processing: Distribution and Coordination Across PC-Based Networks
Variation of Horizontal Stresses and Strains in Mines in Bedded Deposits in the Eastern and Midwestern United States
Page last reviewed: April 8, 2019
Page last updated: April 8, 2019
Content source: National Institute for Occupational Safety and Health, Mining Program
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