Global ETD Search

1	ESTIMATING THE EFFECTS OF BLASTING VIBRATIONS ON THE HIGH-WALL STABILITY Sharma, Abhinav 01 January 2017 (has links) The stability of the high-walls is one of the major concerns for open pit mines. Among the various factors affecting the stability of high-walls, blast vibrations can be an important one. In general, worldwide the established respective government regulations and industry standards are used as guidance to determine the maximum recommended levels of the peak particle velocity and frequency from the blast to avoid any effects on the structures around the mining project. However, most of the regulations are meant for buildings or houses and do not concern high-walls. This thesis investigates the response of high-walls under the effects of vibrations from mine blasting. In this research, the relationship between the high-wall response, the geometry of the slope, the frequency and the amplitude, of the ground vibration produced by blasting, is explored using numerical models in 3DEC. The numerical models were calibrated initially with data collected using seismographs installed in a surface mine operation and recording vibrations produced by an underground mine drill and blast operation. Once the calibration was accomplished, a parametric study was developed to explore the relationships between various parameters under study and its impact on the stability of high-walls. 3DEC NUMERICAL MODELING WITH DYNAMIC STRESS VIBRATION STANDARDS FREQUENCY SHIFTING MAPTEK Mining Engineering
2	A Geochemical and Mineralogical Comparison of Soil Formation on Mine Spoil and Undisturbed Shale and their Contributions to Pore Water, Huff Run Watershed, Ohio Zemanek, Laura Marie 11 October 2021 (has links) No description available. Geochemistry Geology Huff Run mine spoil coal pyrite sequential extraction loss on ignition ICP dissolved organic carbon high wall electrical conductivity contamination non-point source watershed lysimeter ion chromatography organic

Search results

ESTIMATING THE EFFECTS OF BLASTING VIBRATIONS ON THE HIGH-WALL STABILITY

A Geochemical and Mineralogical Comparison of Soil Formation on Mine Spoil and Undisturbed Shale and their Contributions to Pore Water, Huff Run Watershed, Ohio