2006 Coal Operators' Conference The AusIMM Illawarra Branch 6 – 7 July 2006 313 NUMERICAL MODELLING OF MINING INDUCED SUBSIDENCE Walter Keilich 1, Ross Seedsman 2, and Naj Aziz 1 ABSTRACT: A methodology of subsidence prediction using the Distinct Element code UDEC has been developed as an alternative for subsidence modelling in the Southern Coalfield, New South Wales, …
3-D numerical modelling of stresses around a longwall panel with top coal caving The Journal of The South African Institute of Mining and Metallurgy VOLUME 105 NON-REFEREED PAPER MAY/JUNE 2005 289 Figure 2—A simplified plan view of Omerler underground mine
This study, therefore, aims to analyse the impacts of underground mining on the stability of slopes by using numerical modelling. A coal mining induced landslide at Nattai North, Australia, is investigated as a typical case study.
APPENDIX A – NUMERICAL MODELLING AND PILLAR/PANEL STABILITY ASSESSMENT A.1 INTRODUCTION ... prediction at nominal 6m mining height and 9m mining height benchmarked with monitoring data. ... Comparison with numerical models and tributary area theory .
Numerical modelling is broadly used for assessing complex scenarios in underground mines, including mining sequence and blast-induced vibrations from production blasting. Sublevel stoping mining methods with delayed backfill are extensively used to exploit steeply dipping ore bodies by Canadian hard-rock metal mines.
The next stage involves the development of numerical models to help examine influences of individual factors including stope size, stope type, orebody dip and orientation with respect to principal stresses, rock mass quality, mining depth, drift shape and size and the …
Geologic modelling, Geological modelling or Geomodelling is the applied science of creating computerized representations of portions of the Earth's crust based on geophysical and geological observations made on and below the Earth surface.
mechanics using numerical analysis models. Promoting more widespread use of numerical models for ground control engineering may lead to the desired safety improvements; however, several ... control including mining companies, consultants, suppliers and regulatory authorities. To enable
SEA MINING Xiuhan Chen1 ... it is determined that a numerical model should be developed to simulate the process. A good numerical model ... THEORY OF THE UNDERWATER ROCK CUTTING
Numerical Weather Prediction (NWP) data are the form of weather model data we are most familiar with on a day-to-day basis. NWP focuses on taking current observations of weather and processing these data with computer models to forecast the future state of weather.
Data mining is an extension of traditional data analysis and statistical approaches in that it incorporates analytical techniques drawn from a range of disciplines including, but not limited to, 268 Communications of the Association for Information Systems (Volume 8, 2002) 267-296
Course - Numerical Modelling for Rock Engineering - GB8306 - NTNU. The intention is that students will understand the fundamental theory and ... KNOWLEDGE: The student will obtain knowledge in numerical modelling, utilising their ... or mining) or a rock slope (open pit mine, road slope, or natural slope).
Numerical modelling has been used to investigate a variety of problems in underground mining and tunnelling: subsidence induced by longwall coal mining; stresses generated when an open stope is filled cemented backfill and the stability of exposures created during subsequent mining of adjacent ...
Catastrophe theory is a means for mathematically modeling the dynamic processes that underlie behavioral accidents. Based on a comprehensive data base of mining accidents, a computerized catastrophe model has been developed by the Bureau of Mines.
numerical models, addressing its capabilities and limitations, in case of different applications in the mining industry, such as open pit drainage and heap leach.
Read "Numerical modeling of the pressure arch in underground mines, International Journal of Rock Mechanics and Mining Sciences" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
underground mining operations for the control of regional layout stability, and in some cases ... theory. If a pillar (right) is identified in this layout as being loaded close to its peak strength, numerical modelling can be used to estimate the pillar stress and therefore the strength. strata such as ... tributary area theory (TAT)10 and is ...
Diering, J & Laubscher, DH 1987, 'Practical approach to the numerical stress analysis of mass mining', Transactions of the Institution of Mining and Metallurgy, Section A: Mining …
During metal mining, the deformation and failure of rock mass are very important factors that dominate rock movement and zoning. Numerical modelling provides a feasible way to study the deformation and failure of rock mass.
This paper presents a novel numerical simulation algorithm to model the longwall mining in the Svea Nord mine. A finite difference numerical code, FLAC 3D, is used for simulations. A strain-softening constitutive model is used to simulate the nonlinear behaviour of the rock masses.
terms of numerical modelling, there is a tendenc y to consider the contour with confining pressure equal to zero, in order to to delimit the extent of potential
Benchmark testing of numerical approaches for modelling the influence of undercut depth on caving, fracture initiation and subsidence angles associated with block cave mining
Additionally, he is an expert in analysis and geomechanical design of underground mining and surface excavations using 2D and 3D numerical modelling, stability analysis and slope design in …
weighting distance in longwall coal mining - A case study H. Manteghi Azad University, Tehran ... the results of numerical modelling of the first weighting mechanism by using the finite difference code FLAC2D at the E1 longwall panel of the Parvade1 underground mine, ... both ends theory and bending moment approach.
numerical modelling theories in mining. numerical modelling theories in mining - appendix a – numerical modelling and appendix a – numerical modelling and pillar/panel stability assessment a.1 introduction as part of the collingwood park. Get Price .
This paper introduces the basics of different numerical modelling approaches, various applications of numerical modelling techniques for strata management in mines and various numerical modelling codes that are being used elsewhere in the world in the field of mining.
modelling for the South African mining industry, with particular reference to the gold ... Enough theory and relevant equations and transformations are given ... of numerical modelling in the context of the South African gold and platinum mining industries. This includes an example that utilises a number of different numerical
According to the mining situation, the numerical model was built from level −25 m to level −205 m by FLAC 3D with the dimension of 300 m (length) × 200 m (width) × 300 m (height) (Figure 12). In the coordinate system of the model, the positive direction of Y -axis and X -axis is northwest 25° and northeast 65°, respectively.
Numerical modeling can be used to model problems in different fields of geology at various scales, such as engineering geology, geophysics, geomechanics, geodynamics, rock mechanics, and hydrogeology. The following are some examples of applications of numerical modeling in geology.
Numerical modelling of longwall mining and stability Numerical modelling of longwall mining and stability in gates caused by longwall mining. numerical modelling theories in mining numerical modelling case studies in mining, Groundwater Modelling for MiningNumerical Modelling is the second in the series of three cours,