Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 16 of 16 for “"Mining equipment"”.
-
Fuzzy logic-based fault diagnosis for mining equipment failures
Equipment availability is the most significant factor in the productivity of many mines and processing plants. Machine breakdowns are not only expensive in terms of production losses but also important in meeting production schedules. In a complex piece of machinery like a shearer or a powered …
-
Adapting methodologies from the forestry industry to measure the productivity of underground hard rock mining equipment
… the ground support installation component of the mining development cycle in underground hard rock mines for the purposes of comparing equipment. A secondary goal is to identify opportunities to improve the productivity of the ground support installation process. It was found that the forestry …
-
A laboratory simulation of adhesive wear of high speed reciprocating components in water powered mining equipment
… for application in water powered stoping equipment. The suitability of this test rig was investigated by implementing a test programme covering self-mated stainless steel and stainless steel-on-bronze couples. These couples were examined under water lubricated conditions in a broad test …
-
A New Style of Simulation Model for Mining Systems
… productivity of underground room-and-pillar mining systems are well-known and documented. These algorithms consider the time-varying relationships between mining equipment for a given geometry of operations as well as other constraints. This study presents a newly developed, user-friendly …
-
A systems view of quality
… a leading manufacturer of construction and mining equipment, diesel and natural gas engines and industrial gas turbines, is committed to continually improving the quality of their products. Caterpillar currently employs many of the well-known quality techniques, such as statistical process …
-
The tax treatment of interest incurred by mining companies to finance mining capital expenditure
… tax treatment of interest incurred in financing mining capital expenditure. The capital expenditure under consideration is shaft-sinking and mining equipment. The reason for concern as regards this form of capital expenditure lies in the provisions of section 36(11)(a) of the Income Tax Act 58 of …
-
An Investigation into the Development of Thermal Management Policies for Underground Metal Mines in the United States
… which has been transferred to the mine air from mining equipment and other heat and humidity sources. Based upon this, improvements in respect to the underground climatic conditions are much needed. This thesis aims to discuss the steps that are required to develop a heat management policy for …
-
LHD vibrations analysis and numerical modeling during operations
… are extensively used as primary loaders in mining operations. LHDs have proven to be vigorous, extremely productive and reliable in mining applications. They have a wide range of tramming capacities that have enabled them to become an essential component in the hard rock mining …
-
Analysis of NATM and shield tunneling in soft ground
… design practice. The NATM generally uses "hand-mining" equipment for excavation, and shotcrete as temporary support of the tunnel wall. The amount and timing of support is optimized by continuously adapting the construction procedure to the conditions found at the tunnel face. In the present …
-
Investigation of coal bumps in the Pocahontas No. 3 seam, Buchanan County, Virginia
… places shortly after commencement of retreat mining in a given area. Since pillar mining offers the opportunity for achieving relatively high production at a low cost per ton the development of methods for the detection and distressing of areas of high bump probability in advance of mining …
-
Optimization of Quarry Operations and Maintenance Schedules
… into the health, performance, and utilization of mining equipment through the collection of real-time data with sensors. In this study, data is utilized from multiple quarries and a surface coal mine collected through the software CAT Productivity and CAT MineStar Edge to analyze the performance …
-
Abrasive wear with particular reference to digger teeth
… wear is the main reason for component and equipment repair or replacement. In most of these applications, especially those of earth moving, construction and mining equipment, digger teeth are used to improve equipment performance. Digger teeth can be produced in different shapes and sizes …
-
Development of an Underground Automated Thin-Seam Coal Mining Method
It is predicted that coal mining in Southwest Virginia, and the economic stability that it brings to the area, will continue to decline over the next decade unless an environmentally sound, and economically viable means can be found to extract seams of high quality coal in the thickness range of 14 …
-
Modelling of the ventilation system using ventsim considering the full mine mechanization drive at Konkola copper mines
Konkola Copper Mines Plc (KCM) is undergoing full mechanization drive aimed at increasing levels of production from the current 2.4 million tonnes to 7.5 million tonnes per annum. The mechanization of the mines will provide a large potential for reduced costs and improved profits, while at the same …
-
Towards establishing a fit-for-purpose regulatory framework for radiation protection in Western Australia's mining industry: Evaluating mine worker exposures to naturally occurring radionuclides
Mining in the state of Western Australia (WA) formally commenced in the 1840s, and over the ensuing 180 years has evolved to be the epicentre of the Australian mining industry and a significant contributor to the national economy. The lithology of WA is replete with mineralisation that hosts …
-
Application of Background Oriented Schlieren (BOS) in Underground Mine Ventilation
… are impractical underground due to complex equipment and design requirements. Background oriented schlieren (BOS) provides a solution to this problem. BOS requires two primary components, a professional quality digital camera and a schlieren background. A schlieren background is composed of …