Causes and control of coal mine bumps. By K.Y. Haramy and J.P. McDonnell

Causes and control of coal mine bumps. By K.Y. Haramy and J.P. McDonnell Download PDF EPUB FB2

Causes and control of coal mine bumps. [Pittsburgh, PA]: U.S. Dept. of the Interior, Bureau of Mines. MLA Citation. Haramy, Khamis Y. and McDonnell, John P. Causes and control of coal mine bumps [microform] / by K.Y. Haramy and J.P. McDonnell U.S. Dept. of the Interior, Bureau of Mines [Pittsburgh, PA] Australian/Harvard Citation.

Haramy, Khamis Y. & McDonnell, John P. Causes and control of coal mine bumps [microform] / by K.Y. Haramy and J.P. McDonnell U.S. Dept. of the Interior, Bureau of. Causes and control of coal mine bumps. By K.Y. Haramy and J.P. McDonnell by, U.S.

Dept. of the Interior edition, in English. Additional Physical Format: Online version: Haramy, Khamis Y. Causes and control of coal mine bumps.

[Pittsburgh, PA]: U.S. Dept. of the Interior, Bureau of Mines, Causes and control of coal mine bumps. [Khamis Y Haramy; John P McDonnell] Home. WorldCat Home About WorldCat Help.

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of the Interior edition, in English. Technical Report: Causes and control of coal-mine bumps. Report of Investigations/ The U.S. Department of Energy's Office of Scientific and Technical Information.

The demand for increased productivity and the problems associated with mining at greater depths have increased the interest in using the yield pillar concept in the United States. This paper summarizes chain pillar behaviour in a mine that historically experienced coal bumps in both room-and-pillar and longwall sections.

Results indicate that, generally, the chain pillars yield as designed Cited by: 5. Coal mine bumps, which may expel large amounts of coal and rock into the face area and cause damages to underground openings and equipments, are sudden failures near the mine entries. Coal bumps, comparable to rock bursts in noncoal mines, are localized seismic events which can rapidly and forcefully eject many tons of coal into the mine openings.

These events not only disrupt the mining process, they can also be extremely dangerous to underground personnel. A correlation between seismic tomography, seismic events and support pressure and safety at foidel creek mine Causes and control of coal mine bumps.

Haramy, K.Y. & J.P. McDonnell. Ground control is a major issue in underground coal mines. The ‘‘soft ” nature of the rock, nearby bedding, and seam depth are just a few of the factors that make coal extraction dangerous.

In the United States between andover injuries (fatal, non-fatal days lost, no days lost) were reported as a result of a fall of a roof or rib in the underground coal mine industry. Causes and Control of Coal Mine Bumps K. Haramy ve J.

McDonnell YY.'ın Enerjisi Kömür Gemad Biyostratigrafi Prof. Cazibe Sayar Paleontoloji Bartın-Amasra Taşkömürü Havzası MTA Raporu Mining Tips and Gadgets Jack Spalding Mining Publications Ltd. Flotasyon Prensip ve Tatbikatı Doğan Çeçen Etibank Yayını Cevher. Full text of "Bibliography of selected references related to subsidence: an update" See other formats.

Boundary Elements and Other Mesh Reduction Methods XXIX 67 [7] Arai, M., Adachi, T., & Matsumoto, H. Highly accurate analysis by boundary element method based on uniform gradient condition (Application for formulation of classical potential problems), Transactions of Japan Society of Mechanical Engineers (JSME), Ser.