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Rock Mechanics and Engineering 2nd Edition by Charles Jaeger | PDF Free Download.
Part 1: Introduction to rock mechanics
Part 2: Rock material and rock masses
Part 3: Rock mechanics and engineering
Part 4: Case histories
At the time the first edition of Rock Mechanics and Engineering was being printed, important progress was being made both in theory and practice of rock mechanics.
Some new advances were analyzed in an 'Appendix' to the book, which is now incorporated, with the necessary additions, in the relevant chapters of the second edition.
New developments of the new Austrian tunneling method (NATM) and similar methods caused the important chapter on underground power-stations to be rewritten, and several new chapters to be added.
The problem of bridging the gap between scientific research in rock mechanics and practical engineering has become more acute.
Such bridging has recently been achieved in Fluid Transients (Jaeger 1977); it is also vital to applied rock mechanics, as explained in the Preface to the first edition.
Many geologists suggest that the rock quality designation (RQD) of Deere is the most reliable parameter for engineering classification of jointed rock masses.
Some geophysicists did not agree and recently introduced their own more complex classification, based on the combination of several parameters describing rock characteristics.
Engineers in charge of the construction of large tunnels and underground works were not convinced by these efforts and base their own designs on the rock deformations they expect to occur. The second edition deals with these problems in several new chapters.
There is no better method to deal with them than the close analysis of some case histories. The discussion on the engineering classification of jointed rock masses and the required rock support is illustrated by the description of the second Gotthard Tunnel (16 km long), now under construction and the design of the third, so-called Basis, Tunnel (40 km long).
Many other points require illustration by case histories and two new chapters are introduced. One concerns the stability or instability of rock faces and possible rock slides (chapter 15).
The work done for the 300 m high, very steep, rocky abutment of Tachien Dam is one of the situations analyzed. Underground works are the second subject chosen for extensive new developments (chapter 16).
Three very large underground works, Kariba South Bank, Kariba North Bank, and Waldeck II are described and analyzed, showing the rapid evolution of modern techniques.
Comparing all the case histories on dam foundations, slope stability, rock slides, underground works developed in this second edition brings an answer to the many attempts at classifying jointed rock masses for engineering purposes.
There is no universal rule or classification to solve problems of applied rock mechanics. Anyone problem is to be examined in its many aspects from first principles, using all information available from geology, geophysics, rock hydrology and engineering.
I should like to express my thanks to Professor F. C. Beavis who painstakingly read through my revisions, suggesting a number of corrections and several most helpful emendations.
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