Rock mass classification forms the back bone of empirical design methods and has been widely adopted in rock engineering. Rock mass classification has recently become quite popular and is used in feasibility design. It has been repeatedly experienced that rock mass classification, when used correctly, can be a powerful tool in design. In fact, in many projects, the rock mass classification approach has been the only practical basis for the design of complex underground structures. The 60m wide Gjøvik underground ice hockey arena in Norway was also designed using the classification approach.
About the Book
The growing need for this book, “Rock Classification- A Practical Approach in Civil Engineering,” has motivated the authors for many years. Is classification reliable? Can classification be successful in geotechnical hazard risk management? Can a single classification system be general for all rock structures? Is classification a scientific approach? To find answers to these important questions required laborious field research. By God’s grace, scientists from the Central Mining Research Institute (CMRI), University of Rolkee (UOR), Central Soil and Materials Research Station (CSMRS), and U. P. Irrigation Research Institute (UPI) developed a geological classification method.
P. Irrigation Research Institute (UPIRI), and Norwegian Geotechnical Institute (NGI) came together. God-given ideas and reliable field data reduced our interpretation efforts. As a result, several refinements of the correlations became possible and practical questions were resolved. Consultancy work with the above mentioned institutions followed, the success of which further boosted our morale.
Finally, we have systematically compiled the results of our research into this book in order to increase the confidence and interest of civil, mining, and petroleum engineers and geologists.
According to research experience, many classification approaches are scientific. Never the less, the scientific spirit of prediction, checking, and cross-checking should be kept alive. Therefore, many alternative classification systems have been presented for specific rock structures. The correlations proposed in this document can be used in the feasibility design of major projects.
A rational approach is recommended for the final design. For small project designs, field correlations may be used. In this document, the uniaxial compressive strength of rock is denoted as qc and cy c.