Department of industry and resources geotechnical considerations in underground mines document no zme723qt guideline issued. The use of long untensioned grouted cables in underground hard rock mining clifford. A brief history of the development of the hoekbrown failure. He has over 8 years experience in mining industry and tunnelling projects in the field of mine design, ground support design, ground control and management, stability analysis and numerical. Support of underground excavations in hard rock core.
A support becomes active when stresses are induced in it at the time of installation. Support of underground excavations in hard rock request pdf. Withdrawal of support by underground excavation is done each time an animal. Rock support is associated with the rock mass quality as well as the in the state of situ stresses. In underground mines, excavating disturb the initial equilibrium state of the rock mass, and therefore require selection of a support in order to control the movement of rocks, avoid landslide and. You can read online support of underground excavations in hard rock here in pdf, epub, mobi or docx formats. Tunnels and underground excavations tunnels and underground excavations underground excavations and structures. Prosser department of health and human services centers for disease control and prevention national institute for occupational safety and health office of mine safety and health research. The safe and economical construction of tunnels, mines, and other subterranean works depends on the correct choice of support systems to ensure that the excavations are stable. Request pdf support of underground excavations in hard rock the safe and economical construction of tunnels, mines, and other subterranean works depends on the correct choice of support.
Support of underground excavations in hard rock civil. Design principles of rock support for underground excavations. Readers are encouraged to send 1 an order form for these programs is included at the back of this book. His research field in phd is ground support design in deep and hard rock underground mining excavations based on ground behaviour and failure mechanism. Therefore in this book you can find both the theoretical aspects and the practical applications. Pdf download support of underground excavations in hard rock free. Underground excavations in rock download ebook pdf, epub. Design tools for squeezing ground conditions in hard rock mines. The material is organlsed in the following chapters. These support systems should be matched to the characterstics of the rock mass and the excavation techniques adopted.
This site is like a library, use search box in the widget to get ebook that you. Hoek,brown underground excavation in rock mining tunnel. Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, usually those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for. Nov 15, 20 the safe and economical construction of tunnels, mines, and other subterranean works depends on the correct choice of support systems to ensure that the excavations are stable. Ground behaviour analysis, support system design and. Support of underground excavations in hard rock download. Stability analysis and rock bolting design in a multiple joint rock mass. Hence, adopting a burstresistant rock support system is the utmost necessary to minimizecontrol the failure of underground excavations hoek et al. These papers analyze deep excavations and retaining structures, tunnels and underground excavations, and new frontiers in urban geotechnology. Support of underground excavations in hard rock mecanica. In this paper, a distinction is drawn between rock reinforcement or active support, where the supporting elements are. If possible, the installation of rock support should be carried out as an integral part of the excavation cycle to enhance the self supporting aspects of rock mass improvement. Support of underground excavations in hard rock books. Steps in support design for underground excavations in hard rock.
Tunnels and underground excavations underground excavations. The rock support of underground excavations has significantly changed during this period, due to improved technology, experience gained and rock support requirements by mining and geotechnical engineers. Balkema it soon became evident that the modified criterion was too conservative when used for better quality rock masses and a generalised failure criterion was proposed in these two publications. Click download or read online button to get underground excavations in rock book now. University of rizona mining and geological engineering.
This work resulted from close collaboration between industry and university in the fields of precompetitive research. This site is like a library, use search box in the widget to get ebook that you want. Support of underground excavations in hard rock hoek, e. The large deformations resulting from these ph enomena have significant repercussions in the ground support of the underground excavations. Sorry, we are unable to provide the full text but you may find it at the following locations. Support of underground excavations in hard rock crc press book. Underground excavations in rock crc press book underground excavations in rock deals with the geotechnical aspects of the design of underground openings for mining and civil engineering processes. Southern africa has a long history of underground hard rock mining dating back to the late 1800s. This manual looks at the selection of support systems for the construction of tunnels, underground mining excavations and underground power caverns in hard rock. Tunnels and underground excavations, horizontal underground passageway produced by excavation or occasionally by natures action in dissolving a soluble rock. Note the fxx is used for the ordinate of a pdf while fxx is used for. A safety factor, defined by the strength of the support system and the load exerted on it, is usually used for rock support design.
Support of underground excavations in hard rock by e. Support of underground excavations in hard rock crc. Whether youve loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. Review on rockburst theory and types of rock support in. Support of underground excavations in hard rock 1st edition. Click download or read online button to get support of underground excavations in hard rock book now. Support in hard rock underground mines 2 introduction rock support is the term widely used to describe the procedures and materials used to improve the stability and maintain the load bearing capacity of rock near to the boundaries of an underground excavation. This book deals with the geotechnical aspects of the design of underground openings for mining and civil engineering purposes. Bawden support of underground excavations in hard rock published.
This work resulted from close collaboration between industry and university in the. Pdf download support of underground excavations in hard rock. While chambers in 1971 were being excavated in rock to fulfill a wide variety of functions, the main stimulus to their development had come from hydroelectricpowerplant requirements. Stress, instability and design of underground excavations. Download support of underground excavations in hard rock.
Design of underground excavations requires an assessment of risk. Jan 01, 2000 the safe and economical construction of tunnels, mines, and other subterranean works depends on the correct choice of support systems to ensure that the excavations are stable. Pillar and roof span design guidelines for underground stone mines gabriel s. Rock support the choice of the type of support installed in a particular underground excavation depends upon the extent of the zone of loosened or fractured rock surrounding that excavation. By convention, the dip and dip direction measurements are generally written as 35120, where the two digit number refers to the dip and the three digit number refers to the dip direction. While chambers in 1971 were being excavated in rock to fulfill a wide variety of functions, the main stimulus to their development had. It contains a number of worked examples to assist the reader in applying the techniques described to his or her own problems. Hoek and others published support of underground excavation in hard rock find, read and cite all the research.
Pillar and roof span design guidelines for underground stone. Support of underground excavations in hard rock 1st edition e. Other readers will always be interested in your opinion of the books youve read. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Support of underground excavations in hard rock books pics. Support systems may be classified into two broad categories. Rock strength test s to occur in hard rocks which are faulted and jointe d remedial measure s. While formal quantitative risk analysis is not routinely carried out in geotechnical engineering, elements of such risk analysis form the foundation of the observational design method described by peck. This generalised criterion incorporated both the original and the modified. University of rizona mining and geological engineering rock excavation mne 415 515. Hoek is probably currently the master of rock mechanics having not only invented many applied theories including hoekbrown criteria but also being a well known international consultant.