A Modified Methodology for Preliminary Design of Weak Rock Slopes in Lignite Mines



A modified methodology for preliminary design of weak rock slopes in lignite mines
Yardımcı, Ahmet Güneş; Karpuz, Celal (null; 2019-01-01)
In the last decade, popularity of lignite reserves has tremendously increased as an indigenous alternative to fulfill the growing energy demand of Turkey. Most of the proven reserves are situated in shallow depths and extracted by surface mining. Lignite beds and host rock are prone to show weak rock properties from geomechanical aspect. Rock mass failure or structurally controlled mechanisms may drive any potential slope instability. Developing practical tools for preliminary slope design can be useful for...
A methodology for lining design of circular mine shafts in different rock masses
Öztürk, Hasan (2016-09-01)
In this study, the finite element numerical modelling of 2D shaft sections in a Hoek-Brown medium are carried out in a non-hydrostatic stress state in an attempt to predict pressures developing around mine shafts. An iterative process of applying support pressure until observing no failure zone around the shaft is used to simulate the required lining support pressure for different shaft models. Later, regression analysis is carried out to find a generic shaft pressure equation representing the rock mass and...
A novel approach to condensation modeling at the fin top of a grooved heat pipe
Akdağ, Osman; Dursunkaya, Zafer; Department of Mechanical Engineering (2019)
Phase-change passive heat spreaders have the capability of carrying large amounts of heat from a heat source to a heat sink creating a small temperature difference. One common type of the passive heat spreaders is the heat pipes. The liquid flow inside a heat pipe is driven by the capillary pressure gradient created by a wick structure on the inner wall, which may be in the form of grooves, sintered grains or wire meshes. In the literature, grooved heat pipes are the most studied ones for modeling and exper...
A novel approach for the design of pulse shaping filters
Curuk, Selva Muratoglu; Tanık, Yalçın (2006-06-01)
In this work, we propose a new class of pulses for PAM type digital signals. The pulses are designed based on minimization of a figure of merit that is the product of the Cramer-Rao bound of the timing jitter variance and the mean eye closure rate. The new pulses are seen to yield significantly better performances as compared to the classical ones.
A novel approach for the design of pulse shaping filters
Muratoğlu, Selva; Tanık, Yalçın; Department of Electrical and Electronics Engineering (1999)
Citation Formats
C. Karpuz, “A Modified Methodology for Preliminary Design of Weak Rock Slopes in Lignite Mines,” 2019, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/72507.