Rock burst research and the Coeur d'Alene District.
Spokane, WA: U.S. Department of the Interior, Bureau of Mines, IC 9186, 1987 Jun; :1-45
This Bureau of Mines report describes the rock burst problem and measures being taken for its alleviation in the deep underground mines of the Coeur d'Alene Mining District in northern Idaho. The geologic features that contribute to rock bursting in that area are discussed and briefly compared with similar features in other burst- prone mining districts throughout the world. Early investigations to understand and control rock bursting are reviewed, and the mechanics of bursting are discussed in terms of the seismic events that produce them. Sources of strain energy, rock failure mechanisms, and the conditions necessary for the release of seismic energy are covered in detail. Rock burst research in the Coeur d'Alene District is described. Included are discussions of the microseismic method as both a research tool and as a rock burst monitoring system, rock destress blasting and preconditioning methods for rock burst control, and stoping methods currently being developed to reduce rock burst hazards.
Failure; Sites; Energy-transfer; Rock-drilling; Seismic-waves; Monitoring; Stresses; Underpining; Blasting; Mine-bursts; Underground-mining; Rock-mechanics
IH; Information Circular
NTIS Accession No.
Spokane, WA: U.S. Department of the Interior, Bureau of Mines, IC 9186