Design Essential of Hard Rock Mass and Coal Strength With Practical Solved Problems.pdf

Design Essential of Hard Rock Mass and Coal Strength With Practical Solved Problems PDF






Sayfa Sayısı: 304

Baskı Yılı: 2011


Dili: İngilizce
Yayınevi: Evrim Yayınevi

There are many examples of good and bad practice in the management and ... About 23 billion tonnes of minerals, including coal, are produced each year. ... The mining industry in many countries is assuming increasing importance. ... The ... The bulk of rock excavated in mining globally is broken by drilling and blasting. ... In modern practice, they are often sensitized only as they are charged into a hole, ... Properties of interest in selecting fracture explosives include ...

6.13 MB Dosya boyutu
9789755032122 ISBN

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Güncel Notlar

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ACAR YALÇIN

Ana sayfa/Genel Konular - Diğer/Genel Konular/Design Essential of Hard Rock Mass and Coal Strength With Practical Solved Problems.

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KORKMAZ YAVUZ

strengths of hard rock masses. Because of the ... been found to work well in practice. ... rock mass, and 0-o~ is the uniaxial compressive strength ... stress terms, to practical design problems it is necessary ... to be consistent, it is... 2.5 Empirical equations for evaluation of the rock mass strength and ... underground excavation stability mainly in hard rock /Barton et al, 1974/. ... The current practice for geological mapping and core logging should be improved for ....

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DOĞAN KARA

addressing the risks of deep hard rock mining has mostly been conducted under the auspices of the Chamber of Mines Research Organization, the Mine Health and Safety Council, and several collaborative research programs. Research work to mitigate the rockburst risk has focused on three main areas: (i) development of macro-layouts (e.g.

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ÖZTÜRK ÖZDEMİR

All rock mass engineering projects are closely related to rock mass material property. The methods of obtaining these properties decides the project design’s safety and reasonable. The varied characteristics of rock mass under force are subjected by their texture, construction and tectonic history. The experimental results imply that the rock mass strength, deformation and failure modes are ... This thesis aims to develop a rock mass classification system for UK Coal Measure strata such that the output from the classification system may provide a means by which the strength and stiffness properties of Coal Measure strata encountered within UK coal mines may be predicted. The development of the Coal Mine Classification system is described within this thesis.

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ÇELİK YILDIRIM

This thesis aims to develop a rock mass classification system for UK Coal Measure strata such that the output from the classification system may provide a means by which the strength and stiffness properties of Coal Measure strata encountered within UK coal mines may be predicted. The development of the Coal Mine Classification system is described within this thesis. 1.12.1952 rock sample Uniaxial compressive strength 72 2277 6597 2,89 Uniaxial tensile strength 12 249 316 1,27 Triaxial strength 13 261t 964 3,69 Modulus ofelasticityt 54 607 3072 5,06 Poisson's ratio:j: 53 565 2882 5,10 I TOTAL (first three I properties) 97 2787 7877 2,83 TABLE II SUMMARY OFTHE CSIR ROCK TESTING SERVICES. TOTHE MINING ...