Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Physical Sciences and Mathematics (434)
- Environmental Sciences (429)
- Oil, Gas, and Energy (427)
- Sustainability (427)
- Materials Science and Engineering (228)
-
- Mechanical Engineering (228)
- Environmental Monitoring (225)
- Energy Systems (224)
- Environmental Indicators and Impact Assessment (224)
- Structural Materials (224)
- Earth Sciences (204)
- Geological Engineering (14)
- Explosives Engineering (9)
- Chemical Engineering (8)
- Petroleum Engineering (6)
- Arts and Humanities (4)
- Social and Behavioral Sciences (4)
- Business (3)
- International and Area Studies (3)
- Anthropology (2)
- Business Administration, Management, and Operations (2)
- Civil and Environmental Engineering (2)
- Economics (2)
- Electrical and Computer Engineering (2)
- Latin American Studies (2)
- Law (2)
- Life Sciences (2)
- Medicine and Health Sciences (2)
- Institution
-
- University of Kentucky (232)
- China Coal Technology and Engineering Group (CCTEG) (203)
- Missouri University of Science and Technology (23)
- Michigan Technological University (8)
- West Virginia University (7)
-
- Chulalongkorn University (6)
- Montana Tech Library (3)
- SIT Graduate Institute/SIT Study Abroad (2)
- Antioch University (1)
- Central Washington University (1)
- Edith Cowan University (1)
- Embry-Riddle Aeronautical University (1)
- Loyola Marymount University and Loyola Law School (1)
- Portland State University (1)
- Singapore Management University (1)
- University of North Dakota (1)
- Keyword
-
- Coalbed methane (10)
- Numerical simulation (7)
- Coal (6)
- Department of Geological and Mining Engineering and Sciences (6)
- Permeability (6)
-
- Mining (5)
- Shale gas (5)
- CBM (4)
- Influencing factors (4)
- Qinshui basin (4)
- Blasting (3)
- CBM well (3)
- Coal mining (3)
- Coal seam (3)
- Explosives (3)
- Seismic while mining (3)
- Water hazard prevention and control (3)
- Acoustic emission (2)
- Advanced detection (2)
- Aquifer (2)
- Coal mine (2)
- Cohesion (2)
- Collapse column (2)
- Column flotation (2)
- Coring drilling tools (2)
- Cutting load (2)
- Damage (2)
- Drilling equipment (2)
- Dust Scrubber (2)
- Eastern Ordos basin (2)
- Publication
-
- World of Coal Ash Proceedings (224)
- Coal Geology & Exploration (203)
- Mining Engineering Faculty Research & Creative Works (14)
- Theses and Dissertations--Mining Engineering (8)
- Doctoral Dissertations (7)
-
- Chulalongkorn University Theses and Dissertations (Chula ETD) (6)
- Michigan Tech Publications, Part 1 (6)
- Faculty & Staff Scholarship (3)
- Graduate Theses, Dissertations, and Problem Reports (ETD) (3)
- Graduate Theses & Non-Theses (2)
- Independent Study Project (ISP) Collection (2)
- Masters Theses (2)
- All Undergraduate Projects (1)
- Antioch University Dissertations & Theses (1)
- Department of Geological and Mining Engineering and Sciences Publications (1)
- Dissertations, Master's Theses and Master's Reports (1)
- Engineering and Technology Management Faculty Publications and Presentations (1)
- Exhibit Panels (1)
- Loyola of Los Angeles International and Comparative Law Review (1)
- Mining Engineering (1)
- Petroleum Engineering Faculty Publications (1)
- Publications (1)
- Research Collection School Of Computing and Information Systems (1)
- Theses: Doctorates and Masters (1)
- Publication Type
Articles 451 - 480 of 492
Full-Text Articles in Mining Engineering
Integrated Identification Of Sequence Boundary Through Outcrop, Seismic With Logging And Geochemistry: A Case Of Jurassic In Northeastern Margin Of Ordos Basin, Zhang Tianfu, Zhang Yun, Cheng Yinhang, Miao Peisen, Ao Cong, Jin Ruoshi, Duan Lianfeng, Duan Xiaolong
Integrated Identification Of Sequence Boundary Through Outcrop, Seismic With Logging And Geochemistry: A Case Of Jurassic In Northeastern Margin Of Ordos Basin, Zhang Tianfu, Zhang Yun, Cheng Yinhang, Miao Peisen, Ao Cong, Jin Ruoshi, Duan Lianfeng, Duan Xiaolong
Coal Geology & Exploration
Jurassic strata is mainly rock series containing coal and uranium in Ordos basin. The recognition of Jurassic sequence interfaces were mainly relied on the field outcrop, logging lithology of unconformity surface or the sedimentary discontinuity. However, it is tend to experience human recognition of randomness in the sequence interfaces recognition without macroscopic characteristics. Therefore, based on routine identification work such as outcrop profile and electrical curve of nearly 1 000 boreholes, combined with vertical changes of two-dimensional seismic profile and chemical index of alteration(CIA), three long-term cycle sequence interfaces(TSB1-TSB3) and seven medium-term cycle sequence interfaces(SB1-SB7) were finally identified in Jurassic …
Response Relation Between Fracturing Curve And Reservoir Pollution Degree Of Coalbed Methane Wells, Zhuang Dengdeng, Wang Yanbin, Tao Chuanqi, Chen Yan
Response Relation Between Fracturing Curve And Reservoir Pollution Degree Of Coalbed Methane Wells, Zhuang Dengdeng, Wang Yanbin, Tao Chuanqi, Chen Yan
Coal Geology & Exploration
In order to study the relationship between response curve and the pollution degree of fractured reservoir, taking Shizhuang block in Qinshui basin as an example, wells with different sensitivity of reservoir in the block were selected, through comparison of the difference of the dropping trace characteristics after the hydraulic curve reaches the fracture pressure in the fracturing curves of fracturing operation in different wells, the response law of hydraulic dropping trace and the reservoir sensitivity was summed up. Then in the same block according to the dropping trace of the hydraulic curves, the sensibility of reservoir was judged in several …
Landslides Near Enguri Dam (Caucasus, Georgia) And Possible Seismotectonic Effects, Alessandro Tibaldi, Paolo Oppizzi, John S. Gierke, Thomas Oommen, Nino Tsereteli, Zurab Gogoladze
Landslides Near Enguri Dam (Caucasus, Georgia) And Possible Seismotectonic Effects, Alessandro Tibaldi, Paolo Oppizzi, John S. Gierke, Thomas Oommen, Nino Tsereteli, Zurab Gogoladze
Department of Geological and Mining Engineering and Sciences Publications
The Enguri dam and water reservoir, nested in the southwestern Caucasus (Republic of Georgia), are surrounded by steep mountain slopes. At a distance of 2.5 km from the dam, a mountain ridge along the reservoir is affected by active deformations with a double vergence. The western slope, directly facing the reservoir, has deformations that affect a subaerial area of 1.2 km2. The head scarp affects the Jvari–Khaishi–Mestia main road with offsets of man-made features that indicate slip rates of 2–9 cm yr−1. Static, pseudostatic and Newmark analyses, based on field and seismological data, suggest different unstable …
Feed Control: Composite Recycle, Rosy Perez
Feed Control: Composite Recycle, Rosy Perez
All Undergraduate Projects
The Boeing Company gave Central Washington University an opportunity for students to research and come up with an idea to reduce costs and landfill waste caused by the trimmings from the 777x composite wing pieces. The engineering and manufacturing for this project is about transporting composite material through to the delamination and chipper process. The delamination process uses a ram to press two claw shaped devices together that bends and deforms the material in opposite directions. The chipper process uses counter rotating saw blades spaced 1/8” apart to produce small shredded material. It is important for this newly designed feed …
The Dark Side Of Servant Leadership, Thomas W. Camm
The Dark Side Of Servant Leadership, Thomas W. Camm
Mining Engineering
No abstract provided.
Vertical Stress And Deformation Characteristics Of Roadside Backfilling Body In Gob-Side Entry For Thick Coal Seams With Different Pre-Split Angles, Yuqi Ren, Guorui Feng, Pengfei Wang, Jun Guo, Yi Luo, Ruipeng Qian, Qiang Sun, Songyu Li, Yonggan Yan
Vertical Stress And Deformation Characteristics Of Roadside Backfilling Body In Gob-Side Entry For Thick Coal Seams With Different Pre-Split Angles, Yuqi Ren, Guorui Feng, Pengfei Wang, Jun Guo, Yi Luo, Ruipeng Qian, Qiang Sun, Songyu Li, Yonggan Yan
Faculty & Staff Scholarship
Retained gob-side entry (RGE) is a significant improvement for fully-mechanized longwall mining. The environment of surrounding rock directly affects its stability. Roadside backfilling body (RBB), a man-made structure in RGE plays the most important role in successful application of the technology. In the field, however, the vertical deformation of RBB is large during the panel extraction, which leads to malfunction of the RGE. In order to solve the problem, roof pre-split is employed. According to geological conditions as well as the physical modeling of roof behavior and deformation of surrounding rock, the support resistance of RBB is calculated. The environment …
Coupling Simulation Model Between Mine Ventilation Network And Gob Flow Field, F.I. Wu, Y. Luo, X-T Chang
Coupling Simulation Model Between Mine Ventilation Network And Gob Flow Field, F.I. Wu, Y. Luo, X-T Chang
Faculty & Staff Scholarship
Many numerical simulation studies of coal spontaneous combustion have focused on the leakage flow field in the mine gob. However, most of these studies isolate the gob from the mine ventilation system, failing to consider the effects of air leakage on gob boundary conditions. A novel model coupling the mine ventilation network (MVN) and gob flow field (GFF) has been developed to simulate the overall mine ventilation system. The concept of network boundary node was proposed and the corresponding air flow rate balance equations were developed based on the node pressure method for MVN calculation and the finite element method …
Leaching Characteristics Of Rare Earth Elements From Bituminous Coal-Based Sources, Xinbo Yang
Leaching Characteristics Of Rare Earth Elements From Bituminous Coal-Based Sources, Xinbo Yang
Theses and Dissertations--Mining Engineering
The demand for rare earth elements (REEs) has increased over the last decade due to applications in high technology devices including those in the defense industry. The recovery of REEs from primary sources such as rare earth minerals are viable using physical separations followed by chemical processing. However, weak market values and environmental concerns have limited the viability of such operations. On the other hand, REE recovery from secondary sources such as apatite ore, bauxite waste, and waste recycling, provides an opportunity to take advantage of a resource that does not require mining costs as well as other associated costs …
Thermodynamic Modeling And Equilibrium System Design Of A Solvent Extraction Process For Dilute Rare Earth Solutions, Alind Chandra
Thermodynamic Modeling And Equilibrium System Design Of A Solvent Extraction Process For Dilute Rare Earth Solutions, Alind Chandra
Theses and Dissertations--Mining Engineering
Rare earth elements (REEs) are a group of 15 elements in the lanthanide series along with scandium and yttrium. They are often grouped together because of their similar chemical properties. As a result of their increased application in advanced technologies and electronics including electric vehicles, the demand of REEs and other critical elements has increased in recent decades and is expected to significantly grow over the next decade. As the majority of REEs are produced and utilized within the manufacturing industry in China, concerns over future supplies to support national defense technologies and associated manufacturing industries has generated interest in …
Understanding The Connection Between Blasting And Highwall Stability, Robert Quentin Eades, Kyle A. Perry
Understanding The Connection Between Blasting And Highwall Stability, Robert Quentin Eades, Kyle A. Perry
Mining Engineering Faculty Research & Creative Works
Surface mines continue to implement highwalls for several reasons, such as increasing recovery, improving margins, and justifying higher stripping ratios. Highwall stability is a complex issue that is dependent upon a variety of mining and geologic factors, and a safe design is necessary for a successful surface operation. To improve highwall stability, it is important to understand the connection between local geology and blasting. Explosives are employed throughout the mining industry for primary rock breakage. There are a number of controlled blasting techniques that can be implemented to improve highwall stability. These include line drilling, smooth wall blasting, trim blasting, …
Column Flotation Performance Prediction: Pca, Ann And Image Analysis-Based Approaches, Fardis Nakhaei, Mehdi Irannajad, Sima Mohammadnejad
Column Flotation Performance Prediction: Pca, Ann And Image Analysis-Based Approaches, Fardis Nakhaei, Mehdi Irannajad, Sima Mohammadnejad
Mining Engineering Faculty Research & Creative Works
The flotation froth surface appearance includes remarkable information, which can be employed as a helpful index for the qualitative evaluation of the process efficiency. Image analysis is a practical technology for the sake of achieving process related information that can be employed in expert controllers in order to amend flotation performance. In this paper, the intelligent modelling of relationship between froth characteristics and the metallurgical performance in a pilot column flotation of iron ore was established. Column flotation tests were carried out at a wide range of operating conditions and the froth features along with the metallurgical performances were specified …
Predictive Modeling Of Dc Arc Flash In 125 Volt System, Austin Cody Gaunce
Predictive Modeling Of Dc Arc Flash In 125 Volt System, Austin Cody Gaunce
Theses and Dissertations--Mining Engineering
Arc flash is one of the two primary hazards encountered by workers near electrical equipment. Most applications where arc flash may be encountered are alternating current (AC) electrical systems. However, direct current (DC) electrical systems are becoming increasingly prevalent with industries implementing more renewable energy sources and energy storage devices. Little research has been performed with respect to arc flash hazards posed by DC electrical systems, particularly energy storage devices. Furthermore, current standards for performing arc flash calculations do not provide sufficient guidance when working in DC applications. IEEE 1584-2002 does not provide recommendations for DC electrical systems. NFPA 70E …
Simplifying Techniques Applied To Computational Fluid Dynamics Modeling Of Methane Explosions, Laura Steeves
Simplifying Techniques Applied To Computational Fluid Dynamics Modeling Of Methane Explosions, Laura Steeves
Theses and Dissertations--Mining Engineering
Traditional methods of studying underground coal mine explosions are limited to observations and data collected during experimental explosions. These experiments are expensive, time-consuming, and require major facilities, such as the Lake Lynn Experimental Mine. The development of computational fluid dynamics (CFD) modeling of explosions can help minimize the need for large-scale testing. This thesis utilized the commercial CFD software, SC/Tetra, to examine three case studies. The first case study modeled the combustion of methane in a scaled shock tube, measuring approximately 1 foot by 1 foot, by 20.5 feet long, with a methane cloud of 2.5 feet in length, at …
The Redesigned Vortecone: A Maintenance-Free Wet Scrubber Device, Allison Taylor
The Redesigned Vortecone: A Maintenance-Free Wet Scrubber Device, Allison Taylor
Theses and Dissertations--Mining Engineering
Dust creates health and safety issues in mining and there are several different ways to reduce the amount of respirable dust created. Dust particles also affect the operation and efficiency of mining equipment. One device currently used to reduce dust in a coal mine is a flooded-bed dust scrubber. These type of scrubbers are found on continuous miners and are designed to capture dust particles close to the cutting head. However, the fibrous screens on the flooded-bed dust scrubber clog easily reducing both production and the quality and quantity of air miners are exposed too. The flooded-bed dust scrubber was …
Operation And Process Control Development For A Pilot-Scale Leaching And Solvent Extraction Circuit Recovering Rare Earth Elements From Coal-Based Sources, Douglas Kweku Addo
Operation And Process Control Development For A Pilot-Scale Leaching And Solvent Extraction Circuit Recovering Rare Earth Elements From Coal-Based Sources, Douglas Kweku Addo
Theses and Dissertations--Mining Engineering
The US Department of Energy in 2010 has identified several rare earth elements as critical materials to enable clean technologies. As part of ongoing research in REEs (rare earth elements) recovery from coal sources, the University of Kentucky has designed, developed and is demonstrating a ¼ ton/hour pilot-scale processing plant to produce high-grade REEs from coal sources. Due to the need to control critical variables (e.g. pH, tank level, etc.), process control is required. To ensure adequate process control, a study was conducted on leaching and solvent extraction control to evaluate the potential of achieving low-cost REE recovery in addition …
Dust Transportation And Settling Within The Mine Ventilation Network, Anand Kumar
Dust Transportation And Settling Within The Mine Ventilation Network, Anand Kumar
Theses and Dissertations--Mining Engineering
Dust is ubiquitous in underground mine activities. Continuous inhalation of dust could lead to irreversible occupational diseases. Dust particles of size lower than 75.0 µm, also known as float coal dust, can trigger a coal dust explosion following a methane ignition. Ventilation air carries the float coal dust from the point of production to some distance before it’s deposited on the surfaces of underground coal mine. Sources of dust are widely studied, but study of dust transportation has been mainly based on experimental data and simplified models. An understanding of dust transportation in the mine airways is instrumental in …
Influence Of Water Injection Rate On The Vortecone, An Impingement Screen, And A Conventional Filter Screen Cleaning Efficiency, Oscar Velasquez
Influence Of Water Injection Rate On The Vortecone, An Impingement Screen, And A Conventional Filter Screen Cleaning Efficiency, Oscar Velasquez
Theses and Dissertations--Mining Engineering
Industrial produced respirable particles are known to affect the respirable tract of workers causing serious illness or even death. These particles can be found in any mining operation’s environment, new regulations by the Mine Safety and Health Administration (MSHA) in 2014 reduced the allowable limit of dust exposure for underground workers. Dust control practices have been improving over the years to lower the number of incidents caused by these particles. In underground mining, water sprays and scrubber systems have become the most used dust control methods. Water sprays create numerous fine water droplets to capture dust once it has become …
Modelling Of Aerodynamic Process For Coal Waste Dump Located In Geodynamically Dangerous Zone, Elena Vishnevskaya, Alexander Kobylkin, Valeriya Musina, Andrian Batugin, Vladimir Ponomarev, Oksana Vorobyeva
Modelling Of Aerodynamic Process For Coal Waste Dump Located In Geodynamically Dangerous Zone, Elena Vishnevskaya, Alexander Kobylkin, Valeriya Musina, Andrian Batugin, Vladimir Ponomarev, Oksana Vorobyeva
Publications
Previously made evaluations show confinement of fire coal waste dumps to geodynamically dangerous zones which in this work are considered as borders of active blocks of the earth crust. According to the hypothesis under development, when disposing the dumps in geodynamically dangerous zones (GDZ), which have a high penetrating, aerodynamic relation of the dumps with the environment occurs, making the dumps firing possible. Firing of the dumps inflicts environmental, social and material damage. This research is aimed to study possible mechanism of gas mass transfer through GDZ into the body of dump on the base of computer modeling of aerodynamic …
Investigation Of Long Term Pillar Stability In An Abandoned Gypsum Mine Based On Dissolution Models, Mohammadhossein Sadeghiamirshahidi
Investigation Of Long Term Pillar Stability In An Abandoned Gypsum Mine Based On Dissolution Models, Mohammadhossein Sadeghiamirshahidi
Dissertations, Master's Theses and Master's Reports
The abandoned Domtar Mine in Grand Rapids, MI underlies Interstate I-196. The mine operated for over 140 years, mining a 30-meter-deep, four-meter thick gypsum seam. In 2000, the mine was abandoned with the removal of the mine’s dewatering pumps allowing groundwater to flood the mine. The initial flooding resulted in saturating the mine pillars along with some amount of pillar dissolution. Overtime, gypsum dissolution would cease as the water becomes saturated with the gypsum dissolution products. The mine, however, is located adjacent to the Grand River and has groundwater moving through the mine resulting in the potential for continuing dissolution. …
Appalachian Economic Futures, Dewayne Barton, John Deskins, Paul Corbit Brown, William Hal Gorby, Jill Moles Mullins, Nicholas F. Stump, Matt Winans, Brenden E. Mcneil, Eloise Elliott, Chris Haddox, E Gordon Gee, Eddie Brzostek, Audra Slocum, Trevor Mckenzie, Tom Hansell
Appalachian Economic Futures, Dewayne Barton, John Deskins, Paul Corbit Brown, William Hal Gorby, Jill Moles Mullins, Nicholas F. Stump, Matt Winans, Brenden E. Mcneil, Eloise Elliott, Chris Haddox, E Gordon Gee, Eddie Brzostek, Audra Slocum, Trevor Mckenzie, Tom Hansell
Exhibit Panels
When people talk about the future of Appalachia, they typically mean economic futures: What will happen to coal jobs? How will Appalachia diversify its economy? What about poverty? Stereotypes about our region represent our people as disinterested in education, and hostile to innovation, technology, and sustainability. We see a different story. This part of the exhibit looks at ways that Appalachians are taking their strong sense of culture, their linguistic distinctiveness, and their relationship to the natural world to imagine new futures in diverse industries, sustainable practices, and stronger education systems.
Geomechanical Modeling Of Salt Cavern Stability For Carbon Dioxide Storage In The Maha Arakham Formation, Northeastern Thailand, Narumas Pajonpai
Geomechanical Modeling Of Salt Cavern Stability For Carbon Dioxide Storage In The Maha Arakham Formation, Northeastern Thailand, Narumas Pajonpai
Chulalongkorn University Theses and Dissertations (Chula ETD)
In Thailand, CO2 emissions quadrupled over the past three decades since 1989, with the power generation sector as the main contributor by burning fossil fuels to produce electricity. Therefore, the power generating industry has come under scrutiny and been pressed by society to take responsibility. Carbon Capture and Storage (CCS) is one of the many methods to deal with CO2 emissions. Generally, CO2 is captured and stored in geological formations, e.g. rock salt deposits. Salt caverns have been intensively studied regarding their usage for CO2 storage because of their favourable characteristics. In this research, the Finite Element Method (FEM, ANSYS …
A Preliminary Strategic Framework For Enhancing The Sustainability Of International Technology Transfer: The Case Of Libya, Rafaa Ibrahim Khalifa, Maoloud Dabab, Husam Barham
A Preliminary Strategic Framework For Enhancing The Sustainability Of International Technology Transfer: The Case Of Libya, Rafaa Ibrahim Khalifa, Maoloud Dabab, Husam Barham
Engineering and Technology Management Faculty Publications and Presentations
International Technology Transfer (ITT) has played a crucial role not only in the industrial growth of developing countries but also in enhancing the competitiveness of their enterprises in the global market. Libya is a North African country that is currently shifting from a strictly petroleum/mineral based economy to a broad-based economy competing with distinct advantages through selecting, planning, and adopting the right technology for the domestic market. This significant transition requires strategic access to global technology transfer. In this paper, a preliminary strategic framework is designed to enhance the sustainability of the ITT process from international donators to the Country …
Evaluation Of Frother Types For Improved Flotation Recovery And Selectivity, Qingqing Huang, Xinbo Yang, Rick Q. Honaker
Evaluation Of Frother Types For Improved Flotation Recovery And Selectivity, Qingqing Huang, Xinbo Yang, Rick Q. Honaker
Faculty & Staff Scholarship
A laboratory study was conducted to evaluate and compare the effectiveness of nine different frother types when used in a three-phase, continuously operating froth flotation system. The frothers included several that are commonly used in the industry (e.g., MIBC, 2EH, and F-1) as well as unique frother types (e.g., F-3). The tests were conducted in a 5-cm diameter laboratory flotation column that provided near plug-flow mixing conditions due to a length-to-diameter ratio of around 50:1. Test results indicate that F-1, MIBC, and MPC (in order of decreasing effectiveness) provided the weakest performance in terms of combustible recovery while F-2, MAC, …
Pre-Feasibility Study Of Improving Quality Of Low-Grade Fluorite. A Case Study At Phanomthuan Deposit, Kanchanaburi, Thailand, Keosaychai Souvannavong
Pre-Feasibility Study Of Improving Quality Of Low-Grade Fluorite. A Case Study At Phanomthuan Deposit, Kanchanaburi, Thailand, Keosaychai Souvannavong
Chulalongkorn University Theses and Dissertations (Chula ETD)
In this study was presented the pre-feasibility study of improving quality of low-grade fluorite from Phanomthuan deposit, Kanchanaburi province, Thailand. The purpose of this study aims to explore the optimal condition in order to remove the impurities which contained high SiO2, CaCO3 and other minerals, also evaluate the project in term of economic. Therefore, the improvement quality of fluorite by using froth flotation techniques was reach the ceramic grade. The raw material characterization contains CaF2 = 29.4 Wt.%, SiO2 = 43.9 Wt.% and CaCO3 = 6.9 Wt.%. After flotation process the optimal condition result which contains CaF2 = 96.46 Wt.%, …
Correlation Development Of Wax Deposition Prediction From Fang Oil Field, Aung Thwin Thu Aye
Correlation Development Of Wax Deposition Prediction From Fang Oil Field, Aung Thwin Thu Aye
Chulalongkorn University Theses and Dissertations (Chula ETD)
In petroleum industry, wax deposition is a critical operational challenge. It occurs in various locations in the petroleum production chain including well tubing. Hexane, chemical inhibitor, is used to prevent the wax problem of oil from Fang oilfield by the measurement of pour point, wax appearance temperature (WAT) and wax deposition. An increasing shear rate can reduce WAT and the deposited amount increases with lowering the temperature in Fang crude oil. Moreover, the non-linear regression analysis of Fang crude oil with and without hexane in different conditions are done for all three tests. Those regression analysis equations can predict WAT …
Ore Reserve Estimation By Using A Geostatistical Tool At Heinda Mine,Tanintharyi Region,Union Of Myanmar, Aye Min Tun -
Ore Reserve Estimation By Using A Geostatistical Tool At Heinda Mine,Tanintharyi Region,Union Of Myanmar, Aye Min Tun -
Chulalongkorn University Theses and Dissertations (Chula ETD)
Heinda mine is one of major tin producers in Myanmar. The mine has been operated for over 100 years. The mine falls at Latitude 14° 8’ N and Longitude 98° 27’ E, approximately about 45 kilometers to the east of Dawei. The ore reserve is the principal factor of mining venture. The aim of this study is to improve the ore reserve estimation by using geostatistical method (ordinary kriging) compared with conventional method (polygonal method) In geostatistical evaluation, it involved variogram analysis, variogram modelling and kriging estimation. The exponential variogram modelling was used to calculate the ordinary kriging estimation. The …
Pre-Feasibility Study On Granite Quarry For Aggregate: A Case Study At Kanchanaburi Province, Thailand, Bee Ziyivang
Pre-Feasibility Study On Granite Quarry For Aggregate: A Case Study At Kanchanaburi Province, Thailand, Bee Ziyivang
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study aims to develop long term mine planning and design, equipment requirement calculation, and financial model analysis of mining and crushing plant. The ore reserve estimation and pit design carried out by using MineSight software (Ver. 9.50). A discounted cash flow model (DCF) and sensitivity analysis used to evaluate the financial project. Based on our study, the open-pit mining method was advisable for mine planning and design. Ore reserve estimated to 48.4 Mtons under the mining operation of 2.4 Mtos per year. The project time frame is 22 years which spends 21 years for operation and one year for …
Effectiveness Evaluation Of Fluorescent Tracer In Shaly-Sandstone Reservoir, Harid Pataveepaisit
Effectiveness Evaluation Of Fluorescent Tracer In Shaly-Sandstone Reservoir, Harid Pataveepaisit
Chulalongkorn University Theses and Dissertations (Chula ETD)
In petroleum exploration and production industry, tracer is a compound added to injected fluids, and can be easily detected even in a trace amount. Fluorescein sodium, a chemical tracer that can illuminate upon receiving a specific wavelength of light, was mentioned by several literatures due to its strong fluorescence at low concentration, non-toxicity, and non-biodegradability. In this study, fluorescein sodium in the form of fluorescein solution was evaluated with shaly-sandstone to observe their interactions. The first half of this study focused on the evaluation of the chemical characteristics of fluorescein. First, the detection limit of fluorescein solution in deionized water …
A Critical Assessment On The Resources And Extraction Of Rare Earth Elements From Acid Mine Drainage, Christopher R. Vass
A Critical Assessment On The Resources And Extraction Of Rare Earth Elements From Acid Mine Drainage, Christopher R. Vass
Graduate Theses, Dissertations, and Problem Reports (ETD)
Rare earth elements (REEs) are crucial to many modern products used in both civilian and defense applications. Currently, a reliable supply of these elements is uncertain with the clear majority of REE production and refining occurring predominately in China. Furthermore, domestic ore deposits with commercially attractive concentrations of REEs are uncommon in the United States. As a result, the identification of a domestic supply of these technology metals is essential not only for manufacturing consumer merchandise but also for national security. Recently, one promising source of REEs has been identified: coal and coal-byproducts. One of those is acid mine drainage …
Time-Dependent Deformation And Associated Failure Of Roof In Underground Mines, Yuting Xue
Time-Dependent Deformation And Associated Failure Of Roof In Underground Mines, Yuting Xue
Graduate Theses, Dissertations, and Problem Reports (ETD)
In underground coal mines, roof falls are a major contributor to injuries and fatalities. Studies have related the occurrence of roof fall to weak immediate roof, high horizontal stress, entry orientation, etc. An often-neglected factor in studies on this topic has been the influence of time-dependent behavior of the roof rock on roof falls. The time-dependent roof failure activity involves both intact and failed rocks. Numerical simulation techniques are available that include time-dependent behavior; however, they lack constitutive models that consider both the intact and the failed behavior of rock. In addition, input properties for the creep models only include …