Results 51 - 60 of 348

• Influence of Longwall Mining on the Stability of Gas Wells in Chain Pillars
  1/1/2020 - Peer reviewed journal articles
  The article presents seven cases of conventional gas wells within chain pillars and discusses how numerical modeling can provide a more quantifiable approach to assess the stability of the gas wells.
• A Case Study of the Stability of a Non-typical Bleeder Entry System at a U.S. Longwall Mine
  1/1/2020 - Peer reviewed journal articles
  An article detailing observations of the non-typical bleeder entries of a moderate depth longwall panel, with a primary focus on the extent and magnitude of the abutment loading.
• Cemented Paste Backfill Geomechanics at a Narrow-Vein Underhand Cut-and-Fill Mine
  12/1/2019 - Peer reviewed journal articles
  An article describing an extensive in situ backfill instrumentation program designed to monitor long-term stope closure and induced backfill stress.
• A Field Study of Longwall Mine Ventilation Using Tracer Gas in a Trona Mine
  12/1/2019 - Peer reviewed journal articles
  An article describing a field study conducted to understand the role of gas dynamics in variable broken rock, as well as investigate airflow exchanges between the face and gob.
• Overview of Current US Longwall Gateroad Support Practices: An Update
  12/1/2019 - Peer reviewed journal articles
  An overview of recent trends in US longwall mining, with an emphasis on accident and injury trends, as well as support systems and ground conditions.
• Evaluating the Stability of Shale Gas Wells in Longwall Barrier Pillars
  11/1/2019 - Non-peer reviewed journal articles
  An article discussing NIOSH's research on gas well stability in longwall pillars.
• Measurement of the Influence of Antennas on Radio Signal Propagation in Underground Mines and Tunnels
  10/4/2019 - Peer reviewed journal articles
  This paper reports the influence of antennas on radio signal propagation in tunnels and underground mines.
• Ground Response to High Horizontal Stresses During Longwall Retreat and its Implications for Longwall Headgate Support
  2/19/2019 - Peer reviewed journal articles
  An article discussing roof support requirements in the longwall headgate under high horizontal stress in regard to the pattern of supplemental cable bolts and the critical locations where additional supplemental support is necessary.
• Analysis of Global and Local Stress Changes in a Longwall Gateroad
  2/5/2019 - Peer reviewed journal articles
  An analysis of a numerical-model-based approach for estimating the changes in both the horizontal and vertical loading conditions induced by an approaching longwall face.
• Deep Cover Bleeder Entry Performance and Support Loading: A Case Study
  1/24/2019 - Peer reviewed journal articles
  An article examining rear abutment extent and loading, along with how well current modeling procedures calculate those values.