Modeling of Three Flat Coal Seams Strata Developing at Open Pit Miming

MARKOV, Sergey
Demirel, Nuray
ANYONA, Serony
The use of low-cost direct dumpling technology, as is well known, has a relatively limited field of application: flat coal seams, and the higher the dip angle of the seam, the more difficult it is to place the necessary volume of overburden rock in the dumping layers. For this, we have to pour four-tier dumps. In this article, four possible options for piling the dump have been studied and prerequisites have been made for further research aimed at improving the efficiency of the use of direct dumpling technology in the development of flat coal seams.


A probabilistic design approach for rock slopes
DUZGUN, HSB; Karpuz, Celal; Yücemen, Mehmet Semih (1998-10-09)
The basic aim of this study is to develop a reliability-based methodology for the practical design of rock slopes. The advanced first-order second-moment (AFOSM) approach is adapted as;the reliability assessment model. In the reliability-based design methodology, the first step is the modeling and quantification of uncertainties associated with the design parameters. Since the safety of a rock slope is most sensitive to the shear strength of discontinuities, the uncertainty analysis is focused on the parame...
Modeling of particle filled resin impregnation in compression resin transfer molding
Şaş, Hatice Sinem; Erdal Erdoğmuş, Merve; Department of Mechanical Engineering (2010)
Compression Resin Transfer Molding (CRTM) is an advanced liquid molding process for producing continuous fiber-reinforced composite parts in relatively large dimensions and with high fiber volume fractions. This thesis investigates this process for the purpose of producing continuous fiber reinforced composites with particle fillers. In many composites, fillers are used within the resin for various reasons such as cost reduction and improvement of properties. However, the presence of fillers in a process in...
Investigation of bit hydraulics for gasified drilling fluids
Doğan, Hüseyin Ali; Özbayoğlu, Mehmet Evren; Department of Petroleum and Natural Gas Engineering (2004)
Accurate determination of the pressure losses at the bit is very important for drilling practices in petroleum industry. In the literature, there are several studies on determination of the pressure losses. Major focus is concentrated on single phase drilling fluids, which is far from accurate estimation of pressure losses for multiphase fluids, i.e., fluids including a liquid and a gas phase, at the bit. Some of these models are valid for multiphase fluids, however, they are either valid for very high gas ...
3-dimensional measurements of morphological properties of particles
Hicyilmaz, C; Bilgen, S (1996-09-26)
Morphological properties of particles are important in mineral processing. Flotation recoveries are affected by surface roughness and acuteness of particles. A novel technique was developed to measure the morphological properties of particles 3- dimensionally. Pyrite sample ground in autogeneous and ball mill to differentiate the surface properties was used in this study.
Computer modeling of the initial cavern for Beypazari Trona ore on the basis of leaching rates, insoluble contents and thickness of trona layer
Tunçay Saygun, İlkay; Arol, Ali İhsan; Department of Mining Engineering (2008)
Trona ore located in Beypazarı is extracted by solution mining method with well pair connected by directional drilling technology. This thesis covers the determination of the dimensions of the initial (vertical) caverns formed in underground by use of a computer modeling (trademark: WinUbro/Poland) on the basis of horizontal and vertical leaching rates. The leaching rates were determined using the trona core samples from the ore deposit. The effect of insoluble content and the thickness of trona layer and s...
Citation Formats
T. GVOZDKOVA, S. MARKOV, N. Demirel, and S. ANYONA, “Modeling of Three Flat Coal Seams Strata Developing at Open Pit Miming,” 2017, vol. 21, Accessed: 00, 2020. [Online]. Available: