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 18 of 18 for “"mine design"”.
-
Approaches and Barriers to Incorporating Sustainable Development Into Coal Mine Design
… solution to sustainability challenges. The designer of coal mining operations needs to simultaneously consider legal, environmental, and sustainability goals, along with traditional mining engineering parameters, as integral parts of the design process. However, traditional coal mining …
-
Determining the size and life of underground coal mines
The determination of mine design variables such as mine shaft locations, mine field dimensions, mine design capacity, and mine service life under various mining conditions is of primary importance to the economics of developing and subsequently operating an underground coal mine. However, the …
-
Integrating the LaModel and ARMPS Programs (ARMPS-LAM)
… If the LaModel analysis of an ARMPS-type mine design, could be made as easily and quickly as an ARMPS analysis and calibrated against a large database, the potential exists to improve the quality of overall mine design.;In this research, a computer code (ARMPS-LAM) has been developed to …
-
Protection of electronics in submerged enclosures against underwater explosions
In the milieu of military sea mine design, it is often necessary to design mines that are to be placed at small distances from each other. A possible tactical purpose may require that each mine be set to explode at controlled instances in time without disturbing the operation of the other mines in …
-
Evaluation of strata conditions and performance of support systems of the Emerald Shaft Gold Mine in Gauteng Province of South Africa
… of support systems of the Emerald Shaft Gold Mine to ensure long-term stability. The objectives of the study included reviewing the mine design and layout, determining geological conditions and their influence on the rock strata, examining the performance of the support systems used in the …
-
Pillar load transfer mechanisms in multi-seam mining
… seam to subadjacent workings is investigated. Mine geometry and geology are researched as major variables affecting interaction between contiguously placed seams. The thesis includes photoelastic experimentation, finite element modeling, and analysis of multi-seam room and pillar mine case …
-
Predicting mining company-stakeholder conflict and incorporating social conditions into mining project valuation
… are becoming increasingly involved in mine design and permitting decision-making. Yet, the systems in which mining investment decisions take place do not fully capture the importance of stakeholder influence on the success or failure of a mining venture. Conventional mine planning and …
-
Optimizing secondary tailgate support selection
… two different surveys of operating longwall coal mines in the United States. The ALPS (Analysis of Long wall Pillar Stability) program was used to determine adequacy of pillar design for the successful longwall case histories. A relationship was developed between the secondary support density …
-
Stress transfer between multi-seam longwall mines
… of coal under multi-seam mining conditions. Mine design in such an environment will require the accurate prediction of stress transfer between adjacent seams. The available knowledge on criteria controlling stress transfer has been exhaustively reviewed and critical factors affecting …
-
Interaction effects due to subsidence in multiple seam mining
… control mechanisms that must be considered in mine design, when contiguous seams have not been extracted in descending order, is subsidence. This investigation examines the affects of subsidence not on the surface but on mineable seams of coal lying above the seam that has been extracted. Case …
-
Geologic and geotechnical controls on the stability of coal mine entries
Roof and rib failures in underground coal mines are one of the major problems facing the industry today. In addition to safety considerations, the resulting economic impact of such failures is staggering. Uncovering and replacing buried and damaged equipment and clearing entries can account for a …
-
Experimental analysis of the post-failure behavior of coal and rock under laboratory compression tests
A major aspect of coal mine design is the structural stability of the mine. For establishing structural stability, the strength of the strata is determined by recovering the cores. The strength is determined through various methods and one method in particular is the Uniaxial Compressive Strength …
-
Sensor placement for microseismic event location
… and in evaluating the overall performance of a mine design. A robust localization algorithm is used to estimate the source position of the microseismic event by selecting the hypothesized source location that maximizes an energy function generated from the sum of the time--aligned sensor …
-
A Risk-Based Pillar Design Approach for Improving Safety in Underground Stone Mines
The collapse of a mine pillar is a catastrophic event with great consequences for a mining operation. These events are not uncommon, and have been reported to produce air blasts able to knock down, seriously injury or kill miners; cause cascade pillar failures which involve the collapse of …
-
Applications of Surface and Subsurface Subsidence Theories to Solve Ground Control Problems
The stability of the underground mine openings largely depends on the surrounding ground conditions, such as stress concentrations, geological conditions and support intensities etc. In particular, the ground control stability associated with large movements and deformations of the strata is much …
-
Underground Wireless Mesh Communication Infrastructure Design Prediction and Optimization
In an underground coal mine, the measure of a communication system is the coverage area it can provide at a quality that ensures a miner can communicate with other miners in and out of the mine during normal and emergency operations. The coverage area of a wireless mesh communication system can be …
-
Evaluation and Simulation of Wireless Communication and Tracking in Underground Mining Applications
In an underground coal mine, the measure of a communication system is the coverage area it can provide at a quality that ensures a miner can communicate with other miners in and out of the mine during normal and emergency operations. The coverage area of a wireless mesh communication system can be …
-
Design and implementation of an automated gamma probe for jet boring uranium mining.
… (JBS) pilot holes at the Cigar Lake uranium mine is presented. Variant design is used to design, develop, test and implement the detector's hardware, fi rmware and software. The battery powered detector is attached inside a JBS drill rod to collect radiometric data through the drilling cycle. …