Download or read book Cutter Roof Failure written by John L. Hill and published by . This book was released on 1986 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cutter Roof Failure written by Eric R. Bauer and published by . This book was released on 1990 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cutter Roof Failure written by John L. Hill and published by . This book was released on 1986 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Cutter Roof Failure Induced by Clastic Dikes in an Underground Coal Mine written by Eric R. Bauer and published by . This book was released on 1987 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of cutter roof failure induced by clastic dikes in an underground coal mine written by Eric R. Bauer and published by . This book was released on 1987 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Application of Numerical Modeling Techniques to Analysis of Cutter Roof Failure written by M. P. Ahola and published by . This book was released on 1991 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cutter roof failure six case studies in the Northern Appalachian Coal Basin written by Eric R. Bauer and published by . This book was released on 1990 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Combined Field Laboratory and Numerical Study of Cutter Roof Failure in Carrol Hollow Mine Carroll County Ohio written by James B. Becker and published by . This book was released on 2013 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cutter Roof is a process of failure in the ceiling of a mine opening, believed to be caused by elevated magnitudes of regional horizontal compressive stress. In Carroll Hollow mine, Cutter Roof is observed to occur frequently, but within specific areas of the mine and in certain locations and orientations. The overall spatial distribution of cutter roof, however, does not appear to be systematic. Lab testing of mine rocks, laser surveying of the opening geometry, and topographically-perturbed stress models were used to create a numerical model of the stress state about the openings of a section of Carroll Hollow Mine. It was found that overlying topography perturbed the regional stress state around the mine openings, and that this localized perturbed state of stress in combination with geometric factors causes cutter roof to occur in the observed locations in the surveyed area of the mine. Furthermore, the presence of expansive clay in the overlying roof shale presents a long term roof hazard due to exposure to meteoritic water.
Download or read book Coal Mine Roof Instability written by Noel N. Moebs and published by . This book was released on 1986 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Application of Numerical Modeling Techniques to Analysis of Cutter Roof Failure written by United States. Bureau of Mines and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Application of Numerical Modeling Techniques to Analysis of Cutter Roof Failure written by and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Roof Rock Structures and Related Roof Support Problems in the Pittsburgh Coalbeds of Southwestern Pennsylvania written by Noel N. Moebs and published by . This book was released on 1977 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Information Circular written by and published by . This book was released on with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summary of Combustion Products from Mine Materials written by Margaret R. Egan and published by . This book was released on 1990 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Placer Gold Sampling in and Near the Chugach National Forest Alaska written by Robert B. Hoekzema and published by . This book was released on 1986 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Frictional Ignition with Coal Mining Bits written by Welby G. Courtney and published by . This book was released on 1990 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of Investigations written by and published by . This book was released on 1992 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
