File Name: rock support in mining and underground construction .zip
- Underground mining (hard rock)
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- Tunnels and underground excavations
Underground mining (hard rock)
Support system performance under different corrosion conditions. Hadjigeorgiou; J. Dorion; E. This paper reports on recent field observations on the performance of support systems under different corrosion environments in Canadian underground mines. Phenomenological data are used to gain a better understanding of the main causes of corrosion in underground metal mines. Preliminary field data collected from five metal mines have been complemented by atmospheric and water sample analysis as well as fractography and metallographic studies.
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Article details Download article PDF. Proceedings Journals Books. Series: Advances in Engineering Research. Proceedings Article. Construction of hydro power projects in the Himalayan region poses various problems which can have direct implication on the cost and time schedule of the projects. Varying geological conditions necessitate use of modern methodologies for ensuring stability and overall time bound completion of the project Numerical modeling is a potent tool to evaluate stability and to assist in long term planning of a mine along with predictive modeling of planned mining situations.
Tunnels and underground excavations
A vertical opening is usually called a shaft. Tunnels have many uses: for mining ores, for transportation—including road vehicles, trains, subways, and canals—and for conducting water and sewage. Underground chambers, often associated with a complex of connecting tunnels and shafts, increasingly are being used for such things as underground hydroelectric-power plants, ore-processing plants, pumping stations, vehicle parking, storage of oil and water, water-treatment plants, warehouses, and light manufacturing; also command centres and other special military needs.
Hashiba, K. Shafts have a key role as access, transportation, and ventilation routes in mining, tunneling, and underground construction. In addition, the high-level radioactive waste disposal planned in Japan will require the shafts that are deeper than several hundred meters. In recent years the raise boring method is widely employed for shaft excavation in limestone quarries in Japan; however, this method possibly encounters serious troubles in fractured or weathered rock masses, such as collapse of shaft walls, stoppage of excavation, and breakage of tools. These troubles lead to an extension of construction period and an escalation of budget.
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