Course Details
Subject {L-T-P / C} : MN2206 : Mine Ventilation { 3-0-0 / 3}
Subject Nature : Theory
Coordinator : Prof. Himanshu Bhushan Sahu
Syllabus
Module1: Composition of mine air, Mine gases: properties, origin, occurrence, physiological effects, detection, monitoring and control, Methane layering, Degasification of coal seams. Production, assessment, physiological effects and control of mine dusts
Module 2: Thermal environment and psychrometry: Sources of heat load sources in mines, Effect of heat and humidity on miners. Psychrometry, Cooling power of mine air, Methods of improving of cooling power of mine air, Air Conditioning - basic vapor cycle
Module 3: Mechanics of air flow through mine openings: Resistance of airways, Equivalent orifice, distribution of air current, control devices in ventilation systems, Natural ventilation: Calculation of NVP, Thermodynamic aspects, Artificial aids to natural ventilation
Module 4: Mechanical ventilation: Principal types of mine fans, Installation, operation, characteristics and selection of mine fans, Fan testing and Output Control, Fan laws and fan drives, Evasees, Diffusers, Booster fans, Auxiliary ventilation. Reversal of air currents and controlled recirculation Ventilation Survey: Quantity and Pressure survey
Module 5: Planning and Design of Ventilation Systems: Mine ventilation design criteria and ventilation design factors, ventilation standards, Ascensional, descensional, homotropal, antitropal, central and boundary ventilation systems, Ventilation layouts for coal and metal mining, Network analysis : Hardy-Cross method, Computer application in mine ventilation.
Course Objectives
- Describe and apply the principles of fluid flow to ventilation systems.
- Describe and apply fan behaviour laws to ventilation systems.
- Design and develop a ventilation system for a mine.
- Describe environmental hazards found in mines and outline the ventilation control measures that detect, monitor, minimise and/or manage these hazards.
Course Outcomes
CO1: Comprehend and analyze the occurrence of mine gases, dusts and methane drainage and be able to develop and explain control strategies <br />CO2: Comprehend and explain the principles and control of heat and humidity behavior in underground airways <br />CO3: Apply the principles of air flow in an underground mine ventilation system <br />CO4: Comprehend the principles of mine fan selection in order to evaluate the selection and produce improved solutions <br />CO5: Comprehend natural ventilation and explain its application underground. <br />CO6: Carry out ventilation survey. <br />CO7: Plan and Design a basic underground mine ventilation systems. <br />CO8: Comprehend and be able to solve simple ventilation network problems.
Essential Reading
- M. J. McPherson,, Subsurface Ventilation and Environmental Engineering,, Chapman & Hall, 1993
- G. B. Mishra,, Mine Environment and Ventilation,, Oxford University Press , Fifth Impression, 1993
Supplementary Reading
- S.P.Banerjee, Mine Ventilation,, Lovely Prakashan , 1st Edition, 2003
- 2. H. L. Hartman, J. M. Mutmansky, R. V. Ramani and Y. J. Wang, Mine Ventilation and Air Conditioning, Wiley-interscience , 3rd Edition, 1997