Research on Microseismic Passive Velocity Tomography Based on Template Matching Technology

Details

• Personal Author:
  Boltz S ; Chambers D ; Westman E ; Zhaoa X ; Zhua Q
• Description:
  Microseismic passive velocity tomography is becoming an effective technology for large-scale mining-induced stress monitoring in underground mines, especially in the field of early warning of mining-induced hazards. Aiming at the problems of missing low-magnitude events in traditional microseismic monitoring, as well as the potential to increase the resolution of the tomograms in both time and space, a microseismic passive velocity tomography analysis method based on the template matching method was proposed. First, the template matching method was used to pick microseismic events. Then, the probabilistic, non-linear, global-search earthquake location method was used to locate the events and calculate travel time and travel distance. Finally, the fast-marching method was used to carry out passive velocity tomography analysis to image the movement of the abutment stress associated with the longwall. The results show that the selected templates can identify more microseismic events than the traditional microseismic analysis, and the variation trend of events in each day is consistent with the data from the traditional analysis. Using microseismic event locations, travel times and travel distance can effectively complete microseismic passive velocity tomography analysis in each day during the study period and can effectively identify the forward and side abutment stress zones of that longwall panel. This study provides a reference for the identification of mine-induced high stress zones, which has implications for hazard identification and mitigation, with increased resolution of the tomograms in time and space. [Description provided by NIOSH]
• Subjects:
  Hazardous Substances Occupational Health Safety
• Keywords:
  Emerging Technology Ground Control Hazard Identification Longwall Mining Mining Engineering Seismic Monitoring Stress Analysis
• Series:
  Mining Publications
• ISBN:
  97808733551
• Publisher:
  Society for Mining, Metallurgy & Exploration (SME)
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  OSHA Region 10 ; OSHA Region 3 ; Virginia ; Washington
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  SMRD - Spokane Mining Research Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  251-260
• NIOSHTIC Number:
  nn:20070513
• Citation:
  Proceedings of the 43rd International Conference on Ground Control in Mining (ICGCM 2024), July 22-25, 2024, Canonsburg, Pennsylvania. Klemetti T, Mitra R, Perry K, Murphy M, Tulu IB, eds. Englewood, CO: Society for Mining, Metallurgy & Exploration (SME), 2024 Jul; :251-260
• Editor(s):
  Klemetti T; Mitra R; Perry K; Murphy M; Tulu IB
• Federal Fiscal Year:
  2024
• NORA Priority Area:
  Mining
• Peer Reviewed:
  False
• Source Full Name:
  Proceedings of the 43rd International Conference on Ground Control in Mining (ICGCM 2024), July 22-25, 2024, Canonsburg, Pennsylvania
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:3921c500f2b57d6f55317fc7cf2124c02d89f1519295c228c55760d0f368ccb22253d3c4fc5286967664b92bd5d8e52c2e0ffa21e57dd476823050ec61a672fc
• Download URL:
  https://stacks.cdc.gov/view/cdc/215715/cdc_215715_DS1.pdf
• File Type:
  [PDF - 1.90 MB ]