Optimising The Management Of Mining Waste By Means Sentinel-2 Imagery: A Case Study In Joda West Iron And Manganese Mine (India),
2020
Institute of Environmental Geology and Geoengineering, Italian National Research Council, Monterotondo, Rome, Italy
Optimising The Management Of Mining Waste By Means Sentinel-2 Imagery: A Case Study In Joda West Iron And Manganese Mine (India), Daniela Guglietta, Girolamo Belardi, Daniele Passeri, Rosamaria Salvatori, Stefano Ubaldini, Barbara Casentini, Francesca Trapasso
Journal of Sustainable Mining
A smart economy minimizes the production of waste from mining activities and reuses waste as a potential resource, with the goal of moving towards a near-zero waste society. This paper presents integrated multidisciplinary methodology in order to optimise the management of mining waste. The test site is the FeeMn mine in Odisha (India). The mining waste present in the mine has been collected and afterwards X-Ray Powder Diffraction, X-Ray Fluorescence and spectral signatures analysis have been performed for mineralogical, chemical and spectral characterization of the materials. Finally, the classification and mapping of the characterized mining waste was carried out by …
Comments On “Life Cycle Assessment Of Cobalt Extraction Process” By Farjana Et Al. (2019),
2020
Environmental Systems Analysis, Department of Technology Management and Economics, Chalmers University of Technology, Vera Sandbergs Allé 8, 41296 Gothenburg, Sweden
Comments On “Life Cycle Assessment Of Cobalt Extraction Process” By Farjana Et Al. (2019), Rickard Arvidsson, Mudit Chordia, Anders Nordelöf
Journal of Sustainable Mining
Several points of critique are raised against the paper by Farjana et al. (J Sust Mining, 18(3): 150-161, 2019). The first regards the novelty of their paper. The second regards the age and quality of the main source data used. The third regards the description of the system boundary of their main data source.
Prospective Study On Safety Climate Of Surface Mining In Pakistan,
2020
School of Mines, China University of Mining and Technology, Xuzhou, China; State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou, China; Department of Mining Engineering, Mehran University of Engineering and Technology, Jamshoro, Pakistan
Prospective Study On Safety Climate Of Surface Mining In Pakistan, Izhar Mithal Jiskani, Saleem Raza Chalgri, Safiullah Memon, Niaz Muhammad Shahani, Abdullah Rasheed Qureshi
Journal of Sustainable Mining
The purpose of this study was to assess miners' perceptions about the safety climate of their workplace. To achieve the research aim, the relationship between demographic characteristics and occupational hazards was first determined, and finally, the relationship of safety climate with occupational hazards and health-seeking behavior was discovered. The data was collected through a self-reporting questionnaire. The results revealed that the subjects have to deal with severe occupational hazards, and they possess poor health-seeking behavior. A safety climate assessment showed that only one of the seven dimensions (i.e. safety communication, learning, and trust in co-worker safety competence) was at …
Effect Of An Eccentric Decoupled Charge On Rock Mass Blasting,
2020
Department of Energy and Resources Engineering, Chonnam National University, Korea
Effect Of An Eccentric Decoupled Charge On Rock Mass Blasting, Jung-Gyu Kim, Mahrous A. M. Ali, Jong-Gwan Kim
Journal of Sustainable Mining
Experimental and numerical analyses were conducted to investigate the effect of an eccentric loaded contour hole on a rock mass. In the concrete blocks used for the analyses, detonating cords were placed at the centre of the blast hole and eccentrically against the wall of the blast hole. PFC2D and AUTODYN were used for the numerical analyses, and the results of these software showed that an eccentric decoupled charge can result in the directional development of fractures, thereby enabling the control of cracks in the opposite direction. Even though both types of blasting have identical decoupling indexes, the crack …
The Identification Of Heavy Metal Accumulator Ferns In Abandoned Mines In The Philippines With Applications To Mine Rehabilitation And Metal Recovery,
2020
Ateneo de Manila University
The Identification Of Heavy Metal Accumulator Ferns In Abandoned Mines In The Philippines With Applications To Mine Rehabilitation And Metal Recovery, Rene Juna R. Claveria, Teresita R. Perez, Ian A. Navarrete, Rubee Ellaine C. Perez, Brian Christian C. Lim
Environmental Science Faculty Publications
This paper focuses on the identification of some plant accumulators of heavy metals that can facilitate mine remediation and rehabilitation in the Philippines and metal recovery or phytomining. Most of these hyperaccumulators are ferns that thrive very well in different terrains and of particular interest are Pityrogramma calomelanos, Pteris vittata, and Pteris melanocaulon that are abundant in abandoned CueAu mining areas. The amounts of Cu and As in the soil and in the aboveground (AG) and belowground (BG) components of the accumulator ferns were determined and the Bioaccumulation Factor (BF) and the Translocation Factor (TF) were derived. Efforts to …
Energy Demand And Economic Growth: Public Opinion And Mutual Exclusivity,
2020
Gettysburg College
Energy Demand And Economic Growth: Public Opinion And Mutual Exclusivity, Nicholas L. Silvis
Student Publications
The world is currently undergoing an energy transition from primarily fossil fuels to cleaner energy. The developing world is becoming more advanced, spawning relentless economic growth and an increase in energy consumption. Energy demand and economic growth are inextricably linked which poses a paradoxical question about future economic growth during a period of energy transition. Unfortunately, the transition requires large upfront costs with no guaranteed net benefit. A multitude of studies depict the impact of education, party identification, and age on how individuals perceive alternative energy. This study shows that views on governmental spending and party membership have a paradoxical …
Heavy Oil Production, Review Paper,
2020
Cairo University, Egypt
Heavy Oil Production, Review Paper, Mohamed Abd El-Moniem
Emirates Journal for Engineering Research
Petroleum represents an important source of energy. The different resources for energy are classified into renewable and non-renewable. Petroleum is the main source of the non-renewable energy where it is found in conventional and non-conventional reservoirs. Conventional oil production is started since the last century with a high oil and gas production using primary and secondary recovery. Now, the global demand is high compared to the supply from the existing produced fields. The production is declining from the conventional resources, so the production from the unconventional reservoirs is essential to cover the market demand. The unconventional resources are classified as …
Spatiotemporal Variations Of City-Level Carbon Emissions In China During 2000–2017 Using Nighttime Light Data,
2020
Zhejiang University
Spatiotemporal Variations Of City-Level Carbon Emissions In China During 2000–2017 Using Nighttime Light Data, Yu Sun, Sheng Zheng, Yuzhe Wu, Uwe Schlink, Ramesh P. Singh
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
China is one of the largest carbon emitting countries in the world. Numerous strategies have been considered by the Chinese government to mitigate carbon emissions in recent years. Accurate and timely estimation of spatiotemporal variations of city-level carbon emissions is of vital importance for planning of low-carbon strategies. For an assessment of the spatiotemporal variations of city-level carbon emissions in China during the periods 2000–2017, we used nighttime light data as a proxy from two sources: Defense Meteorological Satellite Program’s Operational Linescan System (DMSP-OLS) data and the Suomi National Polar-orbiting Partnership satellite’s Visible Infrared Imaging Radiometer Suite (NPP-VIIRS). The results …
Carbon Taxes And The Composition Of New Passenger Car Sales In Europe,
2020
ADA University, Azerbaijan
Carbon Taxes And The Composition Of New Passenger Car Sales In Europe, Orkhan Nadirov, Jana Vychytilová, Bruce Dehning
Accounting Faculty Articles and Research
This paper examines the effectiveness of implementing carbon taxes to reduce carbon dioxide emissions from transport. Using the system Generalized Method of Moments estimator, we utilize cross-country analysis for the first time to study the impact of carbon taxes on the composition of petrol versus diesel passenger cars sold in 17 countries over the period 2013–2017. The results suggest that increasing carbon taxes affects consumer behavior, causing a significant shift from petrol to diesel fuel vehicles, controlling for factors such as the price of passenger cars, fuel price, interest rates, income level, population density, inflation, and vehicle stock.
Assessment Of Switchgrass-Based Bioenergy Supply Using Gis-Based Fuzzy Logic And Network Optimization In Missouri (U.S.A.),
2020
Montclair State University
Assessment Of Switchgrass-Based Bioenergy Supply Using Gis-Based Fuzzy Logic And Network Optimization In Missouri (U.S.A.), Gia Nguyen, Erik Lyttek, Pankaj Lal, Taylor Wieczerak, Pralhad Burli
Department of Earth and Environmental Studies Faculty Scholarship and Creative Works
Bioenergy has been globally recognized as one of the sustainable alternatives to fossil fuels. An assured supply of biomass feedstocks is a crucial bottleneck for the bioenergy industry emanating from uncertainties in land-use changes and future prices. Analytical approaches deriving from geographical information systems (GIS)-based analysis, mathematical modeling, optimization analyses, and empirical techniques have been widely used to evaluate the potential for bioenergy feedstock. In this study, we propose a three-phase methodology integrating fuzzy logic, network optimization, and ecosystem services assessment to estimate potential bioenergy supply. The fuzzy logic analysis uses multiple spatial criteria to identify suitable biomass cultivating regions. …
Waveform Cross Correlation-Based Imaging Of Underground Seismic Data While Mining,
2020
College of Geology and Environment, Xi'an University of Science and Technology, Xi'an 710054, China
Waveform Cross Correlation-Based Imaging Of Underground Seismic Data While Mining, Zhang Huanlan, Wang Baoli
Coal Geology & Exploration
Seismics while mining is a passive seismic detection technique using a shearer as seismic source. Because the shearer moves unceasingly and excites the continuous signals, the conventional data processing method cannot be applied directly. In the paper a cross-correlation method of segmented waveform was put forward, the effective signal travel time was extracted through the segmentation of the data generated the shear, and then the velocity imaging method was used to image the interior of the working face and the front of the cutting hole. The wave equation was used to carry out the seismics while mining numerical simulation of …
Model And Selection Criterion Of Zonal Preact Grouting To Prevent Mine Water Disasters Of Coal Floor Limestone Aquifer In North China Type Coalfield,
2020
China Coal Research Institute, Beijing 100013, China; Xi'an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi'an 710077, China; Shaanxi Key Laboratory of Coal Mine Water Hazard Prevention and Control Technology, Xi'an 710077, China
Model And Selection Criterion Of Zonal Preact Grouting To Prevent Mine Water Disasters Of Coal Floor Limestone Aquifer In North China Type Coalfield, Dong Shuning, Guo Xiaoming, Liu Qisheng, Wang Hao, Nan Shenghui, Zheng Shitian, Wang Yuhang
Coal Geology & Exploration
In order to promote the development of zonal preact grouting technology and establish a system of the technology to prevent mine water disasters of coal floor aquifer, the authors analyze and summarize the coal seam occurrence and hydrogeological conditions of the Carboniferous-Permian coalfields in China, starting from the engineering systematicity, focusing on the three main factors of drilling conditions, grouting layer selection and drilling technology in the engineering of zonal preact grouting to prevent mine water disasters of coal floor aquifer. The model of zonal preact grouting to prevent mine water disasters of coal floor aquifer is established, which can …
Integrated Monitoring Technology Of Water Inrush From Coal Seam Floor And Its Application,
2020
Xi'an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi'an 710078, China
Integrated Monitoring Technology Of Water Inrush From Coal Seam Floor And Its Application, Duan Jianhua
Coal Geology & Exploration
Karst water damage in floor is a common problem in North China type coalfield. Because of its characteristics of concealment and emergency, the prevention and control of water is faced with huge problems and challenges, monitoring and early warning technology of floor water inrush has become a necessary measure in the process of the safe production in coal mines. The formation and occurrence of floor water disaster have a process of evolution from conception, development to occurrence. In this process, the corresponding water inrush symptoms will be released in different stages of the floor crack and apparent resistivity of the …
Application Of Borehole Transient Electromagnetic Detection In The Test Of Hydraulic Fracturing Effect,
2020
Xi'an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi'an 710077, China
Application Of Borehole Transient Electromagnetic Detection In The Test Of Hydraulic Fracturing Effect, Zhao Rui, Fan Tao, Li Yuteng, Wang Jikuang, Ma Yuan, Wang Bingchun, Liu Lei, Fang Zhe
Coal Geology & Exploration
Hydraulic fracturing technology is widely used in various aspects such as mine rock burst prevention and surrounding rock depressurization, but there has been a lack of efficient and intuitive technology for evaluating the fracturing effectiveness. To solve this problem, a three-component borehole TEM detection method using dynamic source and reception unit was proposed, and detection equipment and supporting construction techniques suitable for construction in hydraulic fracturing holes were developed. Two engineering tests have been carried out in a coal mine. By comparing the processing results of the vertical components of the two detection data before and after fracturing, a pure …
Construction Technology Of Vertical Concealed Laying Of Anti-Seepage Membrane For Water Cutoff Curtain In The Open-Pit Coal Mine,
2020
Dayan Company of China Energy Investment Corporation, Hulun Buir 021122, China
Construction Technology Of Vertical Concealed Laying Of Anti-Seepage Membrane For Water Cutoff Curtain In The Open-Pit Coal Mine, Li Wensong, Dang Yakun, Zhu Mingcheng, Gao Ya
Coal Geology & Exploration
Anti-seepage membrane(HDPE geomembrane) is widely used in anti-seepage projects currently that mainly prevent pollution, leakage and diffusion, and its laying form was various. In an underground water cutoff curtain project of an open-pit coal mine in China, the anti-seepage membrane was laid vertically as the main body of the water cutoff curtain wall, and the largest concealed depth was about 50 m. The different groove sections was overlapping connected by using connection box technology. Through the grouting and backfilling process, the impermeability of the curtain wall was improved and the anti-seepage membrane was compacted. Finally, pumping test in the surrounding …
Water Absorption Characteristics And Their Influence On The Mechanical Properties Of Longmaxi Formation Shale In Northeastern Chongqing,
2020
National and Local Joint Engineering Research Center for Shale Gas Exploration and Development, Chongqing 401120, China; Key Laboratory of Shale Gas Resources Exploration of Natural Resources Department, Chongqing 401120, China；Shunan Gas Mine Field, Southwest Oil and Gas Field Company, PetroChina, Luzhou 646000, China
Water Absorption Characteristics And Their Influence On The Mechanical Properties Of Longmaxi Formation Shale In Northeastern Chongqing, Liu Hong, Xu Fenglin, Chen Qiao, Zhu Honglin, Su Degui, Feng Kelai
Coal Geology & Exploration
A certain amount of casing deformation occurs during the shale reservoir fracturing. There is a certain amount of clay minerals in shale, and after contacting with water-based fracturing fluid, it will show the same expansion characteristics and strength weakening effect as mudstone, which will increase the casing external load. Aiming at the Longmaxi Formation shale in the northeast of Chongqing, the self-absorption and swelling characteristics of shale under different solution systems are studied by physical experiments to analyze the effect of shale hydration on its rock mechanical properties. The results show that the water absorption of shale has a logarithmic …
Reasons Of Low Yield And Stimulation Measures For Cbm Wells In Junlian Area,
2020
Integration Center of Exploration and Development, Zhejiang Oilfield Company, Hangzhou 310023, China
Reasons Of Low Yield And Stimulation Measures For Cbm Wells In Junlian Area, Li Ying, Zheng Rui, Luo Kai, Zhu Yanming, Zhang Yimin
Coal Geology & Exploration
Coalbed methane fields in Junlian area have good development potential, but the existence of a large number of low-production and low-efficiency wells has restricted the increase of productivity. This paper analyzes the coupling relationship between high-productivity wells and geological factors from the perspective of geological engineering integration, analyzes the causes of inefficient wells from three aspects of geology, drainage and engineering, and evaluates the corresponding reform measures. The results show that the formation of inefficient wells in the north and the west of the study area is mainly affected by gas-bearing properties, fault distribution, production horizons, production and drainage rhythms, …
Development Characteristics Of Freezing Temperature Field Of Coastal Soft Soil Strata,
2020
School of Civil Engineering, Fujian University of Technology, Fuzhou 350118, China; Key Laboratory of Underground Engineering, Fujian Province University, Fuzhou 350118, China
Development Characteristics Of Freezing Temperature Field Of Coastal Soft Soil Strata, Chen Junhao, Zhuang Yan, Chen Bijian, Zhao Zhenwei, Wang Qiyun
Coal Geology & Exploration
In order to research the temperature fields and development law of freezing in the construction of connected aisle in coastal soft soil stratum, based on connected aisle between Luoxiu road station and Baise road station of Shanghai subway Line 15, the thickness and average temperature of frozen curtain, and the freezing process were analyzed. The temperature fields and development law of freezing were predicted by the three-dimensional numerical model of the connected aisle and the temperature data which were analyzed. The results show that the inherent pressure in soft soil causes initial pressure in the pressure relief hole. A lot …
Collapse Column Identification Method Based On Seismic Waveform Indication Inversion And Its Application,
2020
BGP Geological Research, CNPC, Zhuozhou 072750, China
Collapse Column Identification Method Based On Seismic Waveform Indication Inversion And Its Application, Wan Zhaofei, Guo Zenghu, Wang Peng, Tang Meizhen, Han Tianbao, Liu Liangqiong
Coal Geology & Exploration
During the CBM exploration and development, the collapse column is one of the important factors restricting the exploration effectiveness of coalbed methane. Therefore, the effective identification of collapse column is of great significance for the improvement of CBM exploration. The previous identification methods are based on the discontinuity of the in-phase axis of seismic reflection caused by collapse column. In this paper, the collapse column is innovatively regarded as a kind of geological anomaly, and the identification and prediction of the collapse column are attempted by means of waveform indication inversion. Firstly, through the analysis of logging data and geological …
Experimental Study On The Frequency Dispersion Response Of Composite Electrical Properties Of Coal,
2020
College of Computer Science and Technology, Henan Polytechnic University, Jiaozuo 454003, China
Experimental Study On The Frequency Dispersion Response Of Composite Electrical Properties Of Coal, Meng Hui, Li Jian, Lei Dongji, Wang Yajuan
Coal Geology & Exploration
In order to study the characteristics of frequency dispersion response of the composite electrical properties of coal, the real part R and imaginary part X of the composite resistance of coal body at different direction in different measured areas were measured, the frequency dispersion characteristics were analyzed, different classical models were used to conduct data inversion and comparison. The results show that the composite electrical property parameters(absolute value of R and X) of coal are inversely proportional to the measured area, the characteristic frequency points are not offset, the X-frequency divergence decreases with the increase of measurement area; …
