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Articles 3391 - 3420 of 8702
Full-Text Articles in Physical Sciences and Mathematics
Sdstate Sustainability Newsletter Vol. 4 Issue 2, Jennifer Mclaughlin
Sdstate Sustainability Newsletter Vol. 4 Issue 2, Jennifer Mclaughlin
SD State Sustainability Newsletter
Content
- American Indian Student Center Generates Energy
- STARS Results Are In
- Harding Hall Earns LEED Gold Certification
- Energy Conservation Tips at Home
- Sustainability Tidbits
Pack It Up, Pass It On: Ditch The Dumpster Wcu, Amy L. Maxcy
Pack It Up, Pass It On: Ditch The Dumpster Wcu, Amy L. Maxcy
Sustainability Research & Practice Seminar Presentations
No abstract provided.
Assessing The Feasibility, Costs, And Benefits Of Transitioning Part Of The University Of South Carolina Shuttle Fleet To An Alternative Fuel Source And Promoting Anti-Idling Strategies, Eva L. James
Senior Theses
The current University of South Carolina shuttle fleet is made up of eleven (11) light duty shuttles and thirteen (13) heavy duty school buses, all of which rely on gasoline and diesel fuel sources. This study intends to assess the environmental, health, and economic tradeoffs of switching part of the existing University shuttle fleet to an alternative fuel source: compressed natural gas (CNG) or propane (LPG). This study also includes detailed, fleet specific idling-cost calculations to encourage the adoption of recommended anti-idling strategies. Following an exhaustive analysis of the available literature that addresses the feasibility of a partial CNG or …
Presence Of Glyphosate In First Order Streams Associated With Rainfall Events, Julie Platz
Presence Of Glyphosate In First Order Streams Associated With Rainfall Events, Julie Platz
Undergraduate Honors Thesis Projects
Glyphosate is widely used in the United States and has recently been described as both mobile and persistent in soils and bodies of water. There is little research however, on the variability of glyphosate concentration in runoff based on different land use types. For this study an evaluation of samples from different land uses are used to assess glyphosate concentrations in first order streams during a runoff event. The intent was to compare three sites with a. known commercial applications, b. known lack of applications (organic), and c. assumed limited application of glyphosate. There was no significant difference in glyphosate …
The Belknap Campus And Metro Louisville Urban Heat Island Effect: Air And Ground Surface Temperature Analysis, Kenyetta Johnson
The Belknap Campus And Metro Louisville Urban Heat Island Effect: Air And Ground Surface Temperature Analysis, Kenyetta Johnson
Undergraduate Arts and Research Showcase
Numerous studies show that urban morphologies and land covers generate excess heat emissions and retain heat relative to surrounding rural areas, known as the Urban Heat Island (UHI) effect. Urban fabrics paved by concretes and asphalts absorbs solar radiation during solar peak then radiates heat after sundown. This study investigates temperature distribution data related to the UHI effect on the Belknap campus at the University of Louisville, which represents a small aerial sample of the Louisville metropolitan UHI effect. The objective of this study is to measure the reflectivity of ground surfaces and air temperatures on the Belknap campus during …
Prescribing Public-Private Partnerships To Global Health Initiatives, Elizabeth Rhoads
Prescribing Public-Private Partnerships To Global Health Initiatives, Elizabeth Rhoads
Independent Study Project (ISP) Collection
For six weeks I served as a finance intern with the Toilet Board Coalition (TBC) and created a Portfolio Presentation to deliver to TBC’s corporate board members in May. With my background in Public Health and interest in Corporate Social Responsibility and Sustainability, I was interested in learning how cross-sector partnerships can help accelerate global health development. My internship with TBC provided me with valuable firsthand experience in my topic of research, Public Private Partnerships (PPPs), which I was able to compare alongside a formal literature review. In this research paper I combine my research with my internship experience to …
The Role Of Island-Marsh Couplings In The Long-Term Sustainability Barrier Islands In The Face Of Accelerated Sea-Level Rise, Christopher Hein
The Role Of Island-Marsh Couplings In The Long-Term Sustainability Barrier Islands In The Face Of Accelerated Sea-Level Rise, Christopher Hein
Sustainability Seminar Series
Barrier islands are one of the most ubiquitous features of the coast . . . at least here along the US East Coast, which accounts for >10% of the world’s barrier islands. Little more than large, partially vegetated, subaerial sand bars, barrier island provide for recreation, ecosystem services, and protection of mainland communities from storm impacts. They are also some of the most dynamic features on earth, constantly changing in the face of waves, tides, wind, and currents. With examples from northern Massachusetts and the Virginia Eastern Shore, this talk will focus on the long-term sustainability of barrier islands, and …
Assessment Of An Automated Calibration Of The Sebal Algorithm To Estimate Dry-Season Surface-Energy Partitioning In A Forest–Savanna Transition In Brazil, Leonardo Laipelt, Anderson Luis Ruhoff, Ayan Santos Fleischmann, Rafael Henrique Bloedow Kayser, Elisa De Mello Kich, Humberto Ribeiro Da Rocha, Christopher Michael Usher Neale
Assessment Of An Automated Calibration Of The Sebal Algorithm To Estimate Dry-Season Surface-Energy Partitioning In A Forest–Savanna Transition In Brazil, Leonardo Laipelt, Anderson Luis Ruhoff, Ayan Santos Fleischmann, Rafael Henrique Bloedow Kayser, Elisa De Mello Kich, Humberto Ribeiro Da Rocha, Christopher Michael Usher Neale
Daugherty Water for Food Global Institute: Faculty Publications
Evapotranspiration (ET) provides a strong connection between surface energy and hydrological cycles. Advancements in remote sensing techniques have increased our understanding of energy and terrestrial water balances as well as the interaction between surface and atmosphere over large areas. In this study, we computed surface energy fluxes using the Surface Energy Balance Algorithm for Land (SEBAL) algorithm and a simplified adaptation of the CIMEC (Calibration using Inverse Modeling at Extreme Conditions) process for automated endmember selection. Our main purpose was to assess and compare the accuracy of the automated calibration of the SEBAL algorithm using two different sources of meteorological …
Techno-Economic Analysis Of Electrocoagulation On Water Reclamation And Bacterial/Viral Indicator Reductions Of A High-Strength Organic Wastewater—Anaerobic Digestion Effluent, Sibel Uludag-Demirer, Nathan Olson, Rebecca Ives, Jean Pierre Nshimyimana, Cory A. Rusinek, Joan B. Rose, Wei Liao
Techno-Economic Analysis Of Electrocoagulation On Water Reclamation And Bacterial/Viral Indicator Reductions Of A High-Strength Organic Wastewater—Anaerobic Digestion Effluent, Sibel Uludag-Demirer, Nathan Olson, Rebecca Ives, Jean Pierre Nshimyimana, Cory A. Rusinek, Joan B. Rose, Wei Liao
Chemistry and Biochemistry Faculty Research
This study investigated the use of iron and aluminum and their combinations as electrodes to determine the technically sound and economically feasible electrochemical approach for the treatment of anaerobic digestion effluent. The results indicated that the use of iron as anode and cathode is the most suitable solution among different electrode combinations. The reduction of turbidity, total chemical oxygen demand, total phosphorus, total coliforms, Escherichia coli, Enterococci, and phages in the reclaimed water were 99%, 91%, 100%, 1.5 log, 1.7 log, 1.0 log, and 2.0 log, respectively. The economic assessment further concluded that the average treatment cost is $3 per …
Effects Of Social Cues On Biosecurity Compliance In Livestock Facilities: Evidence From Experimental Simulations, Luke Trinity, Scott C. Merrill, Eric M. Clark, Christopher J. Koliba, Asim Zia, Gabriela Bucini, Julia M. Smith
Effects Of Social Cues On Biosecurity Compliance In Livestock Facilities: Evidence From Experimental Simulations, Luke Trinity, Scott C. Merrill, Eric M. Clark, Christopher J. Koliba, Asim Zia, Gabriela Bucini, Julia M. Smith
College of Agriculture and Life Sciences Faculty Publications
Disease outbreaks in U.S. animal livestock industries have economic impacts measured in hundreds of millions of dollars per year. Biosecurity, or procedures intended to protect animals against disease, is known to be effective at reducing infection risk at facilities. Yet, to the detriment of animal health, humans do not always follow biosecurity protocols. Human behavioral factors have been shown to influence willingness to follow biosecurity protocols. Here we show how social cues may affect cooperation with a biosecurity practice. Participants were immersed in a simulated swine production facility through a graphical user interface and prompted to make a decision that …
Efficiency And Performance Improvement Via Using Optical Reflectors Of On-Grid Cigs Pv Solar System, Alaa N. Abed, Hazim H. Hussain, Naseer K. Kasim
Efficiency And Performance Improvement Via Using Optical Reflectors Of On-Grid Cigs Pv Solar System, Alaa N. Abed, Hazim H. Hussain, Naseer K. Kasim
Karbala International Journal of Modern Science
CIGS PV solar module is a thin film technology (second generation) that is fabricated from Copper-Indium Gallium Selenide. CIGS an abbreviation of Copper-Indium Gallium Selenide. The system, with which reflectors are incorporated, is 5kWp On-Grid CIGS PV Solar system is located at Al Mansour company, Iraq-Baghdad (latitude 33.3°N, longitude 44.4°E and 41m above the sea level). This study improves performance ratio, array efficiency, electrical power and current. All these improvements are done via increasing solar irradiance by using optical reflectors (fabricates from aluminum metal). The maximum values ( at 12:00PM) of the improved and reference …
Stars In Our Eyes: Documenting Wcu Sustainability Efforts, Bradley Flamm
Stars In Our Eyes: Documenting Wcu Sustainability Efforts, Bradley Flamm
Sustainability Research & Practice Seminar Presentations
No abstract provided.
Modeling The Morphology Of Modern Barrier Islands To Reconstruct Past Coastal Change, Daniel James Ciarletta
Modeling The Morphology Of Modern Barrier Islands To Reconstruct Past Coastal Change, Daniel James Ciarletta
Sustainability Seminar Series
Barrier islands are dynamic landforms that protect 10% of all coasts, not accounting for barriers in bays and lakes. Yet, the ability to predict their future response to changes in sediment availability, rate of sea-level rise, and storm frequency is impeded by the lack of historical records detailing their past behavior. Using models and targeted field investigations, Dr. Ciarletta will explain novel approaches to use the morphology of modern U.S. east coast barriers to reverse-engineer their past evolutions and sediment budgets.
Preparing Youth For Climate Action: Philadelphia Teachers Facilitating Student-Led Social Change In Elementary And Middle School Classrooms, Kathleen Riley, Elizabeth Soslau
Preparing Youth For Climate Action: Philadelphia Teachers Facilitating Student-Led Social Change In Elementary And Middle School Classrooms, Kathleen Riley, Elizabeth Soslau
Sustainability Research & Practice Seminar Presentations
No abstract provided.
Is Niagara Falls Fake?, Daniel Macfarlane
Is Niagara Falls Fake?, Daniel Macfarlane
Faculty Research and Creative Activities Award (FRACAA)
Niagara Falls became a type of machine blending the organic and mechanical, a hybrid envirotechnical infrastructure that is as much artificial as natural.
Bacterial Solutions To Challenging Problems: New Approaches To Bioenergy, Bioremediation, And Biomanufacturing, Ellen Neidle
Bacterial Solutions To Challenging Problems: New Approaches To Bioenergy, Bioremediation, And Biomanufacturing, Ellen Neidle
Sustainability Seminar Series
Microbes play a critical role in Nature due to their ability to produce and degrade a vast array of diverse chemicals. This powerful metabolic versatility holds great promise for biotechnology. To harness such potential requires multidisciplinary scientific knowledge and application. This seminar will describe a novel approach to adaptive laboratory evolution in which a soil bacterium can be engineered to broaden its natural catabolic activities. The method, Evolution by Amplification and Synthetic Biology (EASy), exploits the unique genetic system of a non-pathogenic soil bacterium, Acinetobacter baylyi ADP1. The long-term goal of the research is to reduce our dependence on fossil …
Global Pattern And Change Of Cropland Soil Organic Carbon During 1901-2010: Roles Of Climate, Atmospheric Chemistry, Land Use And Management, Wei Ren, Kamaljit Banger, Bo Tao, Jia Yang, Yawen Huang, Hanqin Tian
Global Pattern And Change Of Cropland Soil Organic Carbon During 1901-2010: Roles Of Climate, Atmospheric Chemistry, Land Use And Management, Wei Ren, Kamaljit Banger, Bo Tao, Jia Yang, Yawen Huang, Hanqin Tian
Plant and Soil Sciences Faculty Publications
Soil organic carbon (SOC) in croplands is a key property of soil quality for ensuring food security and agricultural sustainability, and also plays a central role in the global carbon (C) budget. When managed sustainably, soils may play a critical role in mitigating climate change by sequestering C and decreasing greenhouse gas emissions into the atmosphere. However, the magnitude and spatio-temporal patterns of global cropland SOC are far from well constrained due to high land surface heterogeneity, complicated mechanisms, and multiple influencing factors. Here, we use a process-based agroecosystem model (DLEM-Ag) in combination with diverse spatially-explicit gridded environmental data to …
Mediterranean Marine Protected Areas Have Higher Biodiversity Via Increased Evenness, Not Abundance, Shane A. Blowes, Jonathan M. Chase, Antonio Di Franco, Ori Frid, Nicholas J. Gotelli, Paolo Guidetti, Tiffany M. Knight, Felix May, Daniel J. Mcglinn, Fiorenza Micheli, Enric Sala, Jonathan Belmaker
Mediterranean Marine Protected Areas Have Higher Biodiversity Via Increased Evenness, Not Abundance, Shane A. Blowes, Jonathan M. Chase, Antonio Di Franco, Ori Frid, Nicholas J. Gotelli, Paolo Guidetti, Tiffany M. Knight, Felix May, Daniel J. Mcglinn, Fiorenza Micheli, Enric Sala, Jonathan Belmaker
College of Arts and Sciences Faculty Publications
Journal of Applied Ecology published by John Wiley & Sons Ltd on behalf of British Ecological Society. Protected areas are central to biodiversity conservation. For marine fish, marine protected areas (MPAs) often harbour more individuals, especially of species targeted by fisheries. But precise pathways of biodiversity change remain unclear. For example, how local-scale responses combine to affect regional biodiversity, important for managing spatial networks of MPAs, is not well known. Protection potentially influences three components of fish assemblages that determine how species accumulate with sampling effort and spatial scale: the total number of individuals, the relative abundance of species and …
Green And Animal Manure Use In Organic Field Crop Systems, Patrick M. Carr, Michel A. Cavigelli, Heather Darby, Kathleen Delate, Jed O. Eberly, Heather K. Fryer, Greta G. Gramig, Joseph R. Heckman, Ellen B. Mallory, Jennifer R. Reeve, Erin M. Silva, David H. Suchoff, Alex L. Woodley
Green And Animal Manure Use In Organic Field Crop Systems, Patrick M. Carr, Michel A. Cavigelli, Heather Darby, Kathleen Delate, Jed O. Eberly, Heather K. Fryer, Greta G. Gramig, Joseph R. Heckman, Ellen B. Mallory, Jennifer R. Reeve, Erin M. Silva, David H. Suchoff, Alex L. Woodley
College of Agriculture and Life Sciences Faculty Publications
Dual-use cover/green manure (CGM) crops and animal manure are used to supply nitrogen (N) and phosphorus (P) to organically grown field crops. A comprehensive review of previous research was conducted to identify how CGM crops and animal manure have been used to meet N and P needs of organic field crops, and to identify knowledge gaps to direct future research efforts. Results indicate that: (a) CGM crops are used to provide N to subsequent cash crops in rotations; (b) CGM-supplied N generally can meet field crop needs in warm, humid regions but is insufficient for organic grain crops grown in …
Optimizing The Environmental And Economic Sustainability Of Contingency Base Infrastructure, Jamie E. Filer
Optimizing The Environmental And Economic Sustainability Of Contingency Base Infrastructure, Jamie E. Filer
Theses and Dissertations
Contingency bases are often located in remote areas with limited access to established infrastructure grids. This isolation leads to standalone systems comprised of inefficient, resource-dependent infrastructure, which yields a significant logistical burden, creates negative environmental impacts, and increases costs. Planners can mitigate these negative impacts by selecting sustainable technologies. However, such alternatives often come at a higher procurement cost and mobilization requirement. Accordingly, this study aims to develop and implement a novel infrastructure sustainability assessment model capable of optimizing the tradeoffs between environmental and economic performance of infrastructure alternatives.
Rockhounding, Seafaring, And Other Material Tales For The End Of The World, Noemie Fortin
Rockhounding, Seafaring, And Other Material Tales For The End Of The World, Noemie Fortin
The Goose
In the face of accelerated environmental degradation and climate instability, the future of the Earth and of all life on earth is difficult to visualize. Therefore, the different mediums through which we consider environmental issues are just as important as the actions we take to address them. Focusing on three projects combining art, science, and activism, this article suggests a compilation of material tales. They tell stories of plastic rocks and aluminum nuggets where the protagonists are partly finely crafted objects, partly waste materials, and sometimes both at once. Artists Kelly Jazvac, Yesenia Thibeault-Picazo, and the collective Studio Swine collaborate …
Valorization Of Carrot Processing Waste, Alexandra M. Duval
Valorization Of Carrot Processing Waste, Alexandra M. Duval
Master's Theses
Commercial carrot processors produce up to 175,000 tons of carrot waste annually. Carrot Mash (CM) is the term referring to the waste by-product of peeled baby carrot processing. Transportation of carrot processing waste is expensive due to its high- water content (approx. 83-95%). High in bioactive compounds (carotenoids) and dietary fibers, it is expected that its conversion into a value-added by-product is of interest to the carrot processing industry. Hemicellulose-rich plant materials have proven to be a source of oligosaccharides, which are known for their beneficial prebiotic activity. The objectives of this research were to: 1) determine the effect of …
Temperature Controls Production But Hydrology Regulates Export Of Dissolved Organic Carbon At The Catchment Scale, Hang Wen, Julia Perdrial, Benjamin W. Abbott, Susana Bernal, Remi Dupas, Sarah E. Godsey, Adrian Harpold, Donna Rizzo, Kristen Underwood, Thomas Adler, Gary Sterle, Li Li
Temperature Controls Production But Hydrology Regulates Export Of Dissolved Organic Carbon At The Catchment Scale, Hang Wen, Julia Perdrial, Benjamin W. Abbott, Susana Bernal, Remi Dupas, Sarah E. Godsey, Adrian Harpold, Donna Rizzo, Kristen Underwood, Thomas Adler, Gary Sterle, Li Li
College of Engineering and Mathematical Sciences Faculty Publications
Lateral carbon flux through river networks is an important and poorly understood component of the global carbon budget. This work investigates how temperature and hydrology control the production and export of dissolved organic carbon (DOC) in the Susquehanna Shale Hills Critical Zone Observatory in Pennsylvania, USA. Using field measurements of daily stream discharge, evapotranspiration, and stream DOC concentration, we calibrated the catchment-scale biogeochemical reactive transport model BioRT-Flux-PIHM (Biogeochemical Reactive Transport-Flux-Penn State Integrated Hydrologic Model, BFP), which met the satisfactory standard of a Nash-Sutcliffe efficiency (NSE) value greater than 0.5. We used the calibrated model to estimate and compare the daily …
An Overview Of Climate & Sea-Level Changes Over The Past 100 Million Years, Kenneth Miller
An Overview Of Climate & Sea-Level Changes Over The Past 100 Million Years, Kenneth Miller
Sustainability Seminar Series
Sea-level history reflects the thermal and cryospheric evolution of the Earth, providing a history of ice- sheet behavior and operation of the climate systems under ice-free and glaciated conditions. I compare ice-volume and sea-level estimates obtained from deep Pacific δ18O and Mg/Ca records with those from the mid-Atlantic U.S. obtained by “backstripping”, progressively accounting for the effects of compaction, loading, and thermal subsidence. Peak warmth, sea levels, high CO2 (>1000 ppm), and mostly ice-free condition occurred in the Hothouse Late Cretaceous (ca. 100-66 Ma) and Early Eocene (55-47.9 Ma). During the cool greenhouse (Paleocene, Middle-Late Eocene) sea level was …
A Design For A Sustained Assessment Of Climate Forcing And Feedbacks Related To Land Use And Land Cover Change, Thomas Loveland, Rezaul Mahmood
A Design For A Sustained Assessment Of Climate Forcing And Feedbacks Related To Land Use And Land Cover Change, Thomas Loveland, Rezaul Mahmood
High Plains Regional Climate Center: Personnel Publications
L and use and land cover change (LULCC) plays an important role in the climate system. Many studies have documented the impacts of LULCC on local, regional, and global climate. The National Climate Assessment Report (Melillo et al. 2014) identifies LULCC as a “cross cutting” issue of future climate change studies. This report, and the previous U.S. Climate Change Science Program strategic plan (2003), noted that land use and land cover (LULC) and its feedback is an important source of uncertainty within the climate system (Melillo et al. 2014). As a result, the report calls for a better understanding of …
Agricultural Biosecurity: Reducing Risks And Impacts Of Livestock Diseases, Stephen Posner, Scott Merrill, Julie Smith
Agricultural Biosecurity: Reducing Risks And Impacts Of Livestock Diseases, Stephen Posner, Scott Merrill, Julie Smith
Reports and Policy Briefs
Gund Fellows co-developed timely, innovative research to reduce the risk of animal diseases like coronaviruses spreading among farms. This policy brief helped to inform decision makers at the US Department of Agriculture Foreign Agricultural Service, Department of State Biosecurity Engagement Program, and private sector stakeholders.
Metallogenic Law And Prospecting Direction Of Coal-Based Graphite In Hunan Province, Mo Jiafeng, Zhao Xunlin, Zhu Wenqing, Li Huantong
Metallogenic Law And Prospecting Direction Of Coal-Based Graphite In Hunan Province, Mo Jiafeng, Zhao Xunlin, Zhu Wenqing, Li Huantong
Coal Geology & Exploration
There are many intrusive rocks and complex structures in Hunan Province.In order to study the mineralization law of coal-based graphite, on the basis of collecting the existing geological data, drawing on the characteristics of coal-based graphite deposits at home and abroad, combining the distribution characteristics and development status of graphite resources in Hunan Province, using geological surveys, production well surveys, sampling tests, etc., the geological characteristics of the ore bodies in the existing mining areas around the two granite bodies were studied, the genetic type and ore controlling factors of the graphite deposits were explored, the genetic type is contact …
Organic Nitrogen Forms Of Different Rank Coals In Handan-Fengfeng Mining Area, China, Hao Guoqiang, Hu Sherong
Organic Nitrogen Forms Of Different Rank Coals In Handan-Fengfeng Mining Area, China, Hao Guoqiang, Hu Sherong
Coal Geology & Exploration
Nitrogen is one of the common elements in coal. The occurrence forms of nitrogen in coal are various and vary with coal rank. Based on X-ray photoelectron spectroscopy (XPS), taking Handan-Fengfeng mining area as an example, organic nitrogen forms of different rank coals(Rran = 1.08%–3.67%) were studied, and the variation of the relative abundance of each organic nitrogen with rank was further discussed. The results show that four kinds of nitrogen forms are considered for the coals according to binding energies of N 1s XPS sub-peaks, corresponding to N-6, N-5, N-Q and N-X. N-5 is the most abundant organic nitrogen …
Molecular Structure Characteristics And Model Construction Of Anthracite In Jarud, Zhang Shuai, Ma Rujia, Liu Lu, Zhang Hao, Liu Qinfu
Molecular Structure Characteristics And Model Construction Of Anthracite In Jarud, Zhang Shuai, Ma Rujia, Liu Lu, Zhang Hao, Liu Qinfu
Coal Geology & Exploration
To construct the macromolecular structure model of anthracite in Jarud of Inner Mongolia, the macromolecule structure of anthracite in this area was investigated using the methods of proximate analysis, ultimate analysis, carbon nuclear magnetic resonance(13C-NMR), high resolution transmission electron microscope(HRTEM), and X-ray photoelectric spectrometry(XPS). The results showed that aromatic carbon was the main component of macromolecule structure. Aliphatic carbon existed mainly in the form of short aliphatic chains and naphthenic hydrocarbons. The oxygen-containing functional groups in macromolecule structure of anthracite existed in the form of phenolic hydroxyl group and ether oxygen group. The nitrogen atoms were mainly in the form …
Mining Response And Dynamic Reinforcement For Narrow Coal Pillar Next To Goaf In Working Face 1402 Of Xin’An Coal Mine, Wang Beifang, Liang Bing, Liu Wei, Zhang Jing, Chi Haibo, Liu Yahui
Mining Response And Dynamic Reinforcement For Narrow Coal Pillar Next To Goaf In Working Face 1402 Of Xin’An Coal Mine, Wang Beifang, Liang Bing, Liu Wei, Zhang Jing, Chi Haibo, Liu Yahui
Coal Geology & Exploration
with the increase of integrating coal mines under national coal de-capacity policy, the mining instability phenomenon of narrow coal pillar next to goaf is increasingly prominent, which has seriously restricted the safety and efficient production in coal mines. Therefore, stability control engineering problem of narrow coal pillar next to goaf, near No.5 drilling field on air return roadway of repeated mining face 1402 in Xin'an coal mine was as study object, a method of combining numerical simulation and theoretical analysis was used to explore the mining disturbance response characteristics of narrow coal pillar stability next to goaf, near No.5 drilling …