Results 41 - 46 of 46

• Technology News 466 - Use of Seismic Tomography to Identify Geologic Hazards in Underground Mines
  11/1/1997 - Technology News
  The use of seismic tomography to identify geologic hazards in underground mines is discussed.
• Temporal Imaging of Mine-Induced Stress Change Using Seismic Tomography
  1/1/1997 - Peer reviewed journal articles
  In an effort aimed at monitoring mining-induced stress changes that may influence ground failure, the U.S. Bureau of Mines conducted a series of active 3-D seismic tomographic surveys at the Homestake (Lead, South Dakota) and Lucky Friday (Mullen, Idaho...
• Investigation of a Rock-Burst Site, Sunshine Mine, Kellogg, Idaho
  1/1/1997 - Conference papers
  Rock masses in deep-level mines are subject to high stresses, which can result in unexpected failure of rock into mined-out openings. Personnel from two research centers of the former U.S. Bureau of Mines, Spokane and Twin Cities, investigated a rock b...
• Accuracy and Precision of Microseismic Event Locations in Rock Burst Research Studies
  1/1/1992 - Reports of Investigations
  Stability analyses of fractured and faulted rock masses require delineation of the position, extent, and orientation of geologic discontinuities. Recommendations are made for increasing the accuracy of locations of microseismic events detected.
• Evaluation of the Seismic System for Locating Trapped Miners
  11/1/1981 - Reports of Investigations
  This report discusses the configuration and system deployment for the postdisaster surface seismic system for detecting and locating trapped miners.
• Seismic Detection of Trapped Miners Using In-Mine Geophones
  1/1/1976 - Reports of Investigations
  A seismic system which utilizes in-mine geophones to detect trapped miners has been developed. Tests at the Bureau of Mines safety research mine at Bruceton, Pennsylvania, and at two operating mines indicate such a system has a maximum detection range i...