Download or read book A Study of Rotary drag Drilling in Hard Rock written by James Graeme Dalrymple Crone and published by . This book was released on 1960 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Analysis of Hard rock Rotary Drilling Relationships written by Edwin George Jackson Jr and published by . This book was released on 1957 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Possibilities and Limitations of Rotary Drilling in Hard Rock written by C. Fairhurst and published by . This book was released on 1955 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Possibilities and Limitations of Rotary Drilling in Hard Rock written by C. Fairhurst and published by . This book was released on 1955 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Laboratory Studies of Variables in Rotary Drilling written by James A. Whelan and published by . This book was released on 1962 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aspects of the Development of the Drilling of Deep Bore Holes in Hard Rock written by Anatoliĭ Kirillovich Sidorenko and published by . This book was released on 1960 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of Bit Temperature in Rotary Rock Drilling written by J. E. Whitbread and published by . This book was released on 1958 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wear of Rotary Drag Drill Bits in Granitic Rock written by H. F. C. Nevill and published by . This book was released on 1962* with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface Mining Second Edition written by Bruce A. Kennedy and published by SME. This book was released on 1990 with total page 1214 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SME classic is both a reference book for the working engineer and a textbook for the mining student. This hardcover edition gives a brief history of surface mining and a general overview of the state of surface mining today--topics range from production and productivity to technological developments and trends in equipment. This extremely useful text takes the approach that exploration and mining geologists must be expert in a number of fields, including basic finance and economics, logistics, and pragmatic prospecting. Readers will find material on all these topics and more. The book's nine chapters include: Introduction, Exploration and Geology Techniques, Ore Reserve Estimation, Feasibility Studies and Project Financing, Planning and Design of Surface Mines, Mine Operations, Mine Capital and Operating Costs, Management and Organization, and Case Studies. The book is fully indexed.

Download or read book Self excited percussive rotary drilling in hard rocks written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Uma linha de pesquisa de grande interesse no estudo de colunas de perfuração de poços de petróleo aponta para a necessidade de se aumentar a taxa de penetração (ROP) na perfuração em rochas duras. Procurando suprir tal necessidade, este trabalho tem como objetivo estudar mecanismos e propor um novo dispositivo, utilizando as próprias vibrações geradas na coluna durante a perfuração. As várias formas de vibrar da coluna são, geralmente, indesejadas durante a perfuração. Porém, é possível utilizar algumas destas formas de vibrar para melhorar a eficiência do processo de perfuração. Inicialmente, avalia-se a influência das vibrações torcional e axial na ROP. Posteriormente, estuda-se a perfuração na ressonância e alguns aspectos e cuidados no uso desta nova técnica de perfuração, que vem sendo desenvolvida por empresas do setor. Por fim, é desenvolvido um novo dispositivo de perfuração, chamado de perfuração com martelo em ressonância ou perfuração percussiva-rotativa auto-excitada. Este dispositivo tem como premissa usar a vibração axial gerada no processo de corte, para criar uma carga harmônica na broca e excitar uma massa deaço (martelo). Desenvolve-se um modelo com vibro-impacto e atrito seco, representando o martelo e a resistência da rocha, respectivamente. Faz-se aqui, um estudo numérico e uma validação experimental do movimento percussivo de um modelo que representa a broca com este novo dispositivo. Osresultados mostram que a melhor forma do dispositivo operar é impactando a cabeça da broca, em condição de período-1, com um impacto por ciclo de forçamento. Adicionalmente, os parâmetros do experimento são identificados e os resultados numérico-experimental são comparados, mostrando quesão similares.

Download or read book Rotary Drilling Techniques Used in the Beckley Coalbed written by Tobias W. Goodman and published by . This book was released on 1989 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings written by Australasian Institute of Mining and Metallurgy and published by . This book was released on 1969 with total page 1052 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book KWIC Index of Rock Mechanics Literature written by J P Jenkins and published by Elsevier. This book was released on 2016-06-03 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: KWIC Index of Rock Mechanics Literature, Part 2: 1969-1976 is an index of subjects in rock mechanics. The KWIC (keyword-in-context) index is produced by cyclic permutation of significant words in the title of the publication. The text covers materials in rock mechanics and geomechanics published around the 70s. The book will be of great use to students, researchers, and practitioners of geological sciences.

Download or read book Bulletin written by Institution of Mining and Metallurgy (Great Britain) and published by . This book was released on 1962 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Large scale Laboratory Drag Cutter Experiments in Hard Rock written by Roger J. Morrell and published by . This book was released on 1985 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of Methods to Improve the Performance of Drag Bits Used to Cut Hard Rock written by Michael Hood and published by . This book was released on 1977 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: Methods, performance, drag bits, cut-hard-rock.

Download or read book Drillability and Physical Properties of Rocks written by D. P. Singh and published by . This book was released on 1968 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: