Effect of some rock mass properties on blasting induced ground vibration wave characteristics at Orhaneli surface coal mine

Download
119512.pdf
2002
Uyar Aldaş, G. Gülsev
Show full item record
131
views
0
downloads
Ground vibration is the natural result of rock blasting process. In the literature, improved and empirically verified treatment of blasting induced ground vibration-structure interaction effects on both the strong motions transmitted to the structures and the structure response to these motions have been studied extensively. However, although many empirical formulas and methodologies, including analysis of travel path effects and characterization of local site effect have been developed, studying of blasting induced ground vibration wave propagation properties has been limited to few approaches. The scaled distance, which is the most popular one for the calculation of the attenuation of particle velocity in the ground, has led to significant advances in prediction of particle velocity when both the explosive charge and distance vary. However, this approach does not consider the effect of change of type of ground anisotropy and existence of structural geological features like bedding planes and faults on ground vibration. Therefore, in this study, effects of above-mentioned rock mass properties on types, amplitudes and frequencies of blasting induced ground vibration waves were examined at four open pit mines. The studies carried out at Kangal Coal Mine, Baştaş and Kıbrıs Quarries provided guidance for the study at Orhaneli Surface Coal Mine in which vibration wave propagation properties were determined in detail. IllFindings of the study show that, measured vibration amplitudes change depending on the ground on which seismographs were deployed and conditions whether measurements were conducted on or near any structural geological features. Also the change of vibration amplitude, at equal distances in different directions from the source, with propagation velocity anisotropy was determined. Besides the changes of wave type due to kind of ground on the measurement location, vibration anomalies in the form of abnormal increase/decrease or preservation of amplitudes were detected as a result of presence of faults, bedding planes and interfaces.
Rock mechanics, Ground control (Mining), Soils, Earthquake hazard analysis, Ground vibration, Vibration measurement, Seismic wave, Wave propagation, Ground motion, Seismic hazard
https://hdl.handle.net/11511/12783
Graduate School of Natural and Applied Sciences, Thesis

Suggestions

Effect of some rock mass properties on blasting-induced ground vibration wave characteristics
Aldas, GGU; Bilgin, Hasan Aydın (2004-04-01)
Ground vibration is the natural result of the blasting process. Many empirical formulae and methodologies including analysis of travel path effects have been developed. The scaled distance, which is the most popular approach for the calculation of the attenuation of particle velocity in the ground, has led to significant advances in the prediction of particle velocity when both explosive charge and distance vary. However, this approach does not consider the effect of ground anisotropy and existence of struc...
Effect of axial stresses on reservoir rocks
Kök, Mustafa Verşan; Buket Ulker, E. (2002-10-01)
The effect of axial stresses on rock is known to affect porosity, permeability, and rock compressibility and will be important in some reservoir rock types that are buried deep and at high temperatures. The aim of this project is to determine reservoir rock properties under in situ stress conditions and to observe the effects of axial stresses on reservoir rocks. For this purpose, a uniaxial stress device, which is capable of applying axial stress to the core samples, was used. The core samples chosen were ...
Investigation of ground vibrations induced by production blasting at Uşak Kışladağ gold mine
Çakmak, Bezmi Barış; Bilgin, Hasan Aydın; Department of Mining Engineering (2007)
Ground vibrations from blasting are acoustic waves that propagate through the earth. They are also termed seismic waves because their propagation characteristics are similar to the ground motions produced by earthquakes. Amplitude of ground vibration induced by blasting may vary significantly at or around an open pit mine depending on parameters such as the maximum amount of explosive detonating at a time interval and the physical distance between the shot and the location of concern, whereas the frequency ...
Effects of harbour shape on the induced sedimentation
Kian, Rozita; Velioglu, Deniz; Yalçıner, Ahmet Cevdet; Pelinovsky, Efim; Kurkin, Andrey; Zaytsev, Andrey; Yalciner, Bora; Pamuk, Aykut (2017-01-01)
Tsunamis in shallow water zones lead to sea water level rise and fall, strong currents, forces (drag, impact, uplift, etc.), morphological changes (erosion, deposition), dynamic water pressure, as well as resonant oscillations. As a result, ground materials under the tsunami motion move and scour/erosion/deposition patterns can be observed in the region. Ports and harbours as enclosed basins are the main examples of coastal structures that usually encounter natural hazards with small or huge damaging scales...
Effect of Au on the crystallization of germanium thin films by electron-beam evaporation
EYGİ, ZEYNEP DENİZ; KULAKCI, MUSTAFA; Turan, Raşit (2014-11-01)
Metal induced crystallization is a widely used method to form crystalline/polycrystalline structures at low temperatures. In this work, Au was applied to enhance the crystallization of amorphous Ge films. Ge films with thicknesses of similar to 1.5 mu m were fabricated by electron beam evaporation on c-Si substrate with and without very thin Au layer. Crystallization properties of Ge films were analyzed for different growth and post annealing temperatures varied between 270 degrees C and 730 degrees C. The ...
Citation Formats
G. G. Uyar Aldaş, “Effect of some rock mass properties on blasting induced ground vibration wave characteristics at Orhaneli surface coal mine,” Ph.D. - Doctoral Program, Middle East Technical University, 2002.
METU IIS - Integrated Information Service open@metu.edu.tr