HOEK BRAY ROCK SLOPE ENGINEERING PDF

Spanish Subtitles Intact Rock Sampling and Testing March Intact rock is the basic building block of rock masses that we use as engineering materials. This lecture deals with the collection, preparation and testing of intact rock to establish the properties that we need as input in the estimation of rock mass properties. Rock Mass Properties March Rock masses consist of intact rock pieces separated by tightly interlocking discontinuities. This lecture looks at the data collection and in situ testing required for the estimation of rock mass properties and for the confirmation of the validity of these estimates. Rock Slope Engineering June Rock slope engineering involves the assessment of the risk of instability, the consequences of failure and remedial measures that can be taken in stabilizing rock slopes.

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По умолчанию файлы загружаются в IE In designing the very large excavated slopes which are becoming increasingly common in both mining and civil engineering projects, the engineer is faced with two conflicting requirements. On the one hand, vast sums of money can be saved by steepening the slopes, thereby reducing the amount of material to be excavated.

On the other hand, loss of life and serious damage to property can result from failures induced by excessive steepening of a particular slope. How does the engineer achieve an optimum design—a compromise between a slope which is steep enough to be economically acceptable and one which is flat enough to be safe? Because the rock mass behind each slope is unique, there are no standard recipes or routine solutions which are guaranteed to produce the right answer each time they are applied.

A practical solution is built up from the basic geological data, rock strength information, groundwater observations and a good measure of engineering common sense. These ingredients are blended in different proportions for each case and the only assistance available is a collection of tools and techniques which will help the engineer to collect the information quickly and efficiently and to process it in an orderly manner.

This book sets out to describe these tools and techniques and to illustrate their application to practical problems by means of a number of worked examples. As far as possible, the text has been kept free of mathematics and a number of simple design charts and graphical methods have been included to enable the non-specialist engineer rapidly to obtain approximate answers to his problem.

These approximate answers are frequently adequate but there will be situations in which the engineer will wish to call upon a geotechnical specialist for assistance. Having attempted to solve the problem for himself, the engineer will be in a strong position to communicate his needs to the geotechnical specialist and to work out, with the specialist, the most practical engineering solution.

The authors make no apology for the fact that the book has been printed by offset lithography from typescript and that some of the drawings and photographs are not perfect. Rock Slope Engineering was extensively revised in and, apart from the change in size, this third edition contains relatively few changes. This revised section appears on pages to The replacement of Appendix 1, which dealt with wedge failure in rock slopes, by a new appendix dealing with the statistical analysis of laboratory strength test data.

The introduction of an Index. The reader may be interested to know that this book has now appeared in Turkish and in Japanese translations and additional translations in Spanish, Russian and Chinese are currently being prepared. Contents: Basic mechanics of slope failure Graphical presentation of geological data Geological data collection Groundwater flow; permeability and pressure Plane failure.

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