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Author : Robert M. Becker
Publisher : Unknown
Page : 24 pages
File Size : 51,9 Mb
Release : 1968
Category : Rock pressure
ISBN : UOM:39015078536995
Author : James R. Aggson
Publisher : Unknown
Page : 18 pages
File Size : 42,7 Mb
Release : 1977
Category : Core drilling
ISBN : UOM:39015078483040
Author : Anonim
Publisher : Unknown
Page : 198 pages
File Size : 47,7 Mb
Release : 1988
Category : Mineral industries
ISBN : UCBK:C021031025
Author : Manuel Gomez,William Samuel Landers,E. O. Wagner
Publisher : Unknown
Page : 562 pages
File Size : 45,7 Mb
Release : 1968
Category : Bituminous coal
ISBN : STANFORD:36105006337153
Author : David L. Bickel
Publisher : Unknown
Page : 190 pages
File Size : 44,8 Mb
Release : 1993
Category : Ground control (Mining)
ISBN : COLUMBIA:CU72011467
Author : Geological Survey (U.S.)
Publisher : Unknown
Page : 890 pages
File Size : 44,8 Mb
Release : 1971
Category : Geophysics
ISBN : UOM:39015018207343
Author : Anonim
Publisher : Unknown
Page : 660 pages
File Size : 46,9 Mb
Release : 1971
Category : Geophysics
ISBN : MINN:31951000874484J
Author : United States. Bureau of Mines
Publisher : Unknown
Page : 450 pages
File Size : 52,8 Mb
Release : 1970
Category : Mineral industries
ISBN : UOM:39015095153972
Author : United States. Bureau of Mines
Publisher : Unknown
Page : 824 pages
File Size : 52,8 Mb
Release : 1960
Category : Government publications
ISBN : UOM:39015013580801
Author : B. Amadei,O. Stephansson
Publisher : Springer Science & Business Media
Page : 524 pages
File Size : 46,6 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401153461
Rock masses are initially stressed in their current in situ state of stress and to a lesser natural state. Whether one is interested in the extent on the monitoring of stress change. formation of geological structures (folds, faults, The subject of paleostresses is only briefly intrusions, etc. ), the stability of artificial struc discussed. tures (tunnels, caverns, mines, surface excava The last 30 years have seen a major advance our knowledge and understanding of rock tions, etc. ), or the stability of boreholes, a in the in situ or virgin stress field, stress. A large body of data is now available on knowledge of along with other rock mass properties, is the state of stress in the near surface of the needed in order to predict the response of rock Earth's crust (upper 3-4km of the crust). masses to the disturbance associated with those Various theories have been proposed regarding structures. Stress in rock is usually described the origin of in situ stresses and how gravity, within the context of continuum mechanics. It is tectonics, erosion, lateral straining, rock fabric, defined at a point and is represented by a glaciation and deglaciation, topography, curva second-order Cartesian tensor with six compo ture of the Earth and other active geological nents. Because of its definition, rock stress is an features and processes contribute to the current enigmatic and fictitious quantity creating chal in situ stress field.
Author : Joseph Cervik,Albert Sainato,Maurice Deul
Publisher : Unknown
Page : 436 pages
File Size : 51,9 Mb
Release : 1977
Category : Electronic
ISBN : STANFORD:36105006336676
Author : Albert Lynn Johnson,Ann G. Kim,Charles D. Litton,Curtis H. Elder,David R. Forshey,David Schlain,George J. Conroy,Gordon H. Dechman,James R. Aggson,John C. Edwards,John C. Franklin,John Durkin,Joseph Cervik,Joseph E. Matta,M. E. Poad,Natesa I. Jayaraman,Richard Hammer,Wallace W. Key,Albert Sainato,Aldo L. Furno,Dennis Grigal,Frank X. McCawley,Galen G. Waddell,Henry E. Perlee,John C. LaScola,M. C. Irani,Martin Hertzberg,Meng-Cherng Sun,Thomas O. Meyer,Welby G. Courtney,Earl L. Phillips,Fred N. Kissell,Gerald R. Smith,Joseph M. Kutcha,Maurice Deul,Robert C. Bates,Robert F. Chaiken
Publisher : Unknown
Page : 546 pages
File Size : 40,8 Mb
Release : 1977
Category : Cables
ISBN : OSU:32435025835208
Author : Bernard Amadei
Publisher : Springer Science & Business Media
Page : 498 pages
File Size : 44,9 Mb
Release : 2012-12-06
Category : Technology & Engineering
ISBN : 9783642820403
Any undisturbed rock mass is subject to natural stresses inclu ding gravitational stresses due to the mass of the overburden and possibly tectonic stresses due to the straining of the earth's crust and remanent stresses due to past tectonism. Knowledge of the in situ stress field must be integrated into any rock engineering design along with general rock mass characteristics such as de for mability, strength, permeability and time dependent behavior. For example, the choice of optimum orientation and shape of deep underground caverns or complex underground works will be controlled by the orientation and the magnitude of the in situ stress @ield if it is necessary to minimize stress concentration problems. Long term variation of the in situ stress field may also help to evaluate the potential hazard of earthquake occurences. The magnitude and orientation of the stress field ata point within a rock mass can be measured but there is no known method by which the state of stress at a point can be accurately determined by instruments located remotely. In general, measurements are made inside boreholes, on outcrops or on the internal surfaces of under ground cavities. Most of the measuring techniques intentionally disturb the state of stress in the rock and then measure consequent strains and displacements. Measured strains or displacements are then related to the stresses through assumptions of material behavior. A common procedure is to assume that the rock mass is linearly elastic, isotropic, continuous and homogeneous.
Author : Anonim
Publisher : Unknown
Page : 268 pages
File Size : 40,5 Mb
Release : 1977
Category : Mineral industries
ISBN : UCAL:B3508816
Author : David L. Bickel
Publisher : Unknown
Page : 28 pages
File Size : 40,6 Mb
Release : 1977
Category : Boring
ISBN : UOM:39015078463950
