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ntroductory to
Mine
Ventilation
Rini Novrianti Sutardjo Tui
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Ventilasi
Grading System
Minimum Class
Attendance is
80%Final-test35%
Mid-test35%
Assignments20%
Participation
5%
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Ventilasi
Schedule for Semester
September
October
November
December
Week 1 IntroductoryWeek 2 Basic Principles
of AirflowWeek 3 Mine Gasses
Week 4 Dust in Mine Air
Week 1 Mine Explosion and Mine FireWeek 2 Mine Ventilation Cost
Week 3 Mine Ventilation EfficiencyWeek 4 Mid Test
Week 1 Mine FansWeek 2 Control DevicesWeek 3 Resistance RelationshipWeek 4 Atkinsons Equation
Week 1 Mine Ventilation SystemWeek 2 Ventilation SurveyWeek 3 Natural VentilationWeek 4 Final Test
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Ventilasi
General Rules
Be on time. Lateness is toleratedfor only15 minutesfrom the starting of the class
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Ventilasi
MINE VENTILATION
Introduction
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Ventilasi
Definition of Mine Ventilation
The process ofconducting an adequate
flow of pure fresh airalong airways, workingplaces and service point
underground
To dilute
To dilute
To provide
The concentration of
A thermally acceptable
The explosive and toxic gasses
The concentration of
The airborne dust tophysiologically acceptable levels
Environment
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Ventilasi
Two Basic Problems
RockMechanicsaspectdoes theapplied underground
mine system haveadequate supportingsystemtowards
opening?
TechnologyUnderground Mining
MineVentilationaspect is itpossible to implement
air management inorder to do mine worksin safe andcomfortableworkspace?
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Ventilasi
History of Mine Ventilation
Pre Middle Ages
Middle AgesIndustrial Revolution
Industrial Revolution
Information Age
Information Age
There was development of twin access and divided shaft in theLaurium silver mines of Greece (600 BC).In the Roman times, slaves waving palm fronds were used topromote air circulation.
Mine ventilation practices were illustrated and described inDe Re Metallica by Georgius Agricola, 1556. The bookdescribed horse and human powered centrifugal fans. Agricolaalso described the danger of blackdampand firedamp.
John Atkinson, a British mining agent presented his famouspaper On the Theory of the Ventilation of Mines in 1854.Atkinsons Equation still forms the basis for all mineventilation engineering.
The most notable feature has been the development ofcomputerized mine ventilation network analysis. This hasmade the prediction of fan requirements and airflowdistributions in complex mine ventilation circuits feasibleusing desk computers.
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Ventilasi
Mine Ventilation System
Single Systems
Consists of:Brattice systemFan & DuctsystemForcing system
ExhaustingsystemExtendedsystem
A system thatcombines twosingle systems:Push-pull systemOverlapping
system
A system that usesother type of airmover:Jet fanSpray fan
Compressed airejectors
Combined System Alternative Systems
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Ventilasi Infrastructure of MineVentilation
Directionof airflow
Layout ofairwaysnetwork
Geometry
of airways
Positionand main
duty offans
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Ventilasi
MINE VENTILATION
Illustration
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Ventilasi Simple Schematic of MineVentilation
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Ventilasi
Mine Ventilation System
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