Mine Ventilation : Proceedings of the 18th North American Mine Ventilation Symposium, 12-17 June, 2021, Rapid City, South Dakota, USA

This volume contains the proceedings of the 18th North American Mine Ventilation Symposium held, on a virtual platform, June 12-17, 2021. This symposium was organized by South Dakota Mines, Rapid City, South Dakota, in collaboration with the Underground Ventilation Committee (UVC) of the Society for Mining, Metallurgy & Exploration (SME). The Mine Ventilation Symposium series has always been a premier forum for ventilation experts, practitioners, educators, students, regulators, and manufacturers from around the world to exchange knowledge, ideas, and opinions. This volume features fifty-seven selected technical papers in a wide range of topics including: auxiliary ventilation, case studies of mine ventilation, computational fluid dynamics applications in mine ventilation, diesel particulate control, electric machinery in mine ventilation, mine cooling and refrigeration, mine dust monitoring and control, mine fans, mine fires and explosion prevention, mine gases, mine heat, mine management and organization of ventilation, mine ventilation and automation, occupational health and safety in mine ventilation, renewable/alternative energy in mine ventilation, ventilation monitoring and measurement, ventilation network analysis and optimization, and ventilation planning and design. Cover Half Title Title Page Copyright Page Table of contents Preface Organizing committees Sponsors Auxiliary ventilation Auxiliary fan selection considering purchasing and energy costs based on fan curves Case studies of mine ventilation Ventilation tradeoff study considering switch to battery electric vehicles Calibration of LKAB’s Konsuln test mine ventilation model using barometer Pressure-Quantity (PQ) survey Computational fluid dynamics applications in mine ventilation Investigation of explosion hazard in longwall coal mines by combining CFD with 1/40th scaled physical modeling Integration of conjugate porous media model into mine ventilation network software Airflow characteristic curves for amature block cave mine Scale modeling, PIV, and LES of blowing type airflow in adeep cut continuous coal mining section Diesel particulate control Transient-flow modelling of DPM dispersion in unventilated dead-end crosscuts and control strategy using curtain Estimating diesel particulate matter using apredictive technique for use in underground metal mine production scheduling Diesel aerosols in an underground coal mine Preliminary field study to evaluate two thermal correction methods for removing VOC interference from DPM sample analysis Evaluation of methodology for realtime monitoring of diesel particulate matter in underground mines Optimizing secondary fan location and air quantity to control DPM recirculation in underground workings using Discrete phase modelling The results of the evaluations of the instrumentation used to monitor concentrations of DPM Electric machinery in mine ventilation Considerations of the overall impact on costs in the Battery Electric versus Diesel-powered equipment selection and trade-off Mine cooling and refrigeration Development of energy efficient and sustainable cooling strategies for hot underground mines Design of mine bulk air cooling systems: Numerical, empirical and experimental validation Numerical evaluation of aspot cooling technique for underground metal mines Mine dust moni toring and control Respirable dust characterization using SEM-EDX and FT-IR: Acase study in an Appalachian coal mine Characterization of respirable dust samples generated from picks at differing stages of wear Acomprehensive roof bolter drilling control algorithm for enhancing energy efficiency and reducing respirable dust An analysis of coal mine lung diseases in the US coal mines Effects of different shapes of drill shroud on dust control for surface mine drilling operation Development of areal time respirable coal dust and silica dust monitoring instrument based on photoacoustic spectroscopy Development of non-regulatory runtime respirable coal and silica dust monitor Respirable Coal Mine Dust (RCMD) research: Characterization, deposition, monitoring, and mitigation of RCMD Comparison of mineral content in respirable coal mine dust samples estimated using FTIR, TGA, and SEM-EDX Mine fans A simple electro-mechanical controllable pitch fan Optimizing vertically-mounted jet fans in ventilation shafts for arail overbuild Mine fires and explosion prevention Goaf gas distribution profiles near the longwall tailgate area Challenges and solutions in the development of the VentFIRE mine network fire simulator Water spray suppression of leaked oil fires: Anumerical study Anti-caking treated rock dust and its effect on downwind respirable dust measurements Scaling and flow similarity considerations to develop a1/40th scaled aerodynamic model of alongwall coal mine for methane hazards investigation Mine gases Review on development technologies and research status of coalbed methane industry in China Mine heat Incorporating ventilation and heat in an underground mine production scheduling model Spray freezing for mine heating a statistical perspective Mine management and organization of ventilation Procedures for mitigating safety risks associated with post-blast re-entry times An innovative methodology for the assessment and maintenance of e-learning courses using the Community of Inquiry model Mine ventilation and automation Numerical modeling of longwall-induced permeability under shallow cover Occupational health and safety in mine ventilation Application of machine learning to determine underground hazard location Activity-based respirable dust prediction in underground mines using artificial neural network Mine ventilation — studies and environmental interventions for Artisanal and Small-scale Mining (ASM) in the Arequipa region, Perú Evaluating the effect of coal seam height and mine size on coal workers’ pneumoconiosis prevalence in the United States coal mines, 1986-2018 Ultra fine dusts– BEV fleets and the challenges for ventilation planning Design and characterization of canopy air curtain for protecting against diesel particulate matter exposures in underground mines Renewable/Alternative energy in mine ventilation Waste heat recovery from diesel generator jacket water for mine intake air pre-heating in cold climates: A numerical study Ventilation monitoring and measurement Comparison of air velocity measurement techniques AMS-based accident alarm system: A field case study Field survey of mine ventilation system for large opening underground mines: Pressure, relative humidity, and temperature Towards atmospheric monitoring data analysis in underground coal mines Ventilation network analysis and optimization Ventilation model calibration from limited survey data Improving calibration of amine ventilation network using continuous airflow monitoring Ventilation planning and design Optimizing ventilation design through discrete event equipment simulation Evolution of the Henderson mine ventilation system Underground hard-rock mine ventilation considerations for battery electric mobile equipment Scale model investigation of ventilation parameters in ablock cave mine Author index This volume contains the proceedings of the 18th North American Mine Ventilation Symposium held virtually from June 12-17, 2021. This symposium was organized by the South Dakota School of Mines in collaboration with the Underground Ventilation Committee (UVC) of the Society for Mining, Metallurgy & Exploration (SME).