Effects of pressure relief holes on coal burst: Insights from true-triaxial unloading tests

• Published in: Journal of Rock Mechanics and Geotechnical Engineering Vol. 16; no. 9; pp. 3378 - 3394
• Main Authors: Ren, Fuqiang, Karakus, Murat, Nguyen, Giang, Bruning, Thomas
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.09.2024; State Key Laboratory for Geomechanics & Deep Underground Engineering,China University of Mining and Technology,Beijing,100083,China%Mining and Petroleum Engineering,The University of Adelaide,Adelaide,South Australia,5005,Australia%School of Architecture and Civil Engineering,The University of Adelaide,South Australia,5005,Australia; School of Civil Engineering,University of Science and Technology Liaoning,Anshan,114051,China; Mining and Petroleum Engineering,The University of Adelaide,Adelaide,South Australia,5005,Australia; Elsevier
• Subjects: Acoustic emission (AE); Coal burst; Drilling orientation; Ejection characteristic; Triaxial unloading; Drilling orientation; Coal burst; Ejection characteristic; Triaxial unloading; Acoustic emission (AE); Acoustic emission(AE)

Drilling pressure relief is one of the methods to reduce the risk of coal bursts in deep mines. However, the effect of the drill hole orientations has not been studied well enough to understand their impact on the burst failure mechanism. In this study, we investigated two designs of drill hole orie...