PILOT CORE PROTECTION & GATE END BOX
GATE END BOX: GEB is an Electric Panel which is used for feeding Electrical power to the Electrically operated mining machineries such as...
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Siddharth Urmaliya
Dec 30, 20211 min read
SAMPLING , Different Process of sampling-
By MiningSYNC / December 30, 2021 / GATE 2022 SAMPLING - The process of selecting representative sample from a population to study...
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Siddharth Urmaliya
Dec 13, 20211 min read
MOTIVE COLUMN & MEASUREMENT OF VENTILATION PRESSURE
Motive column : Ø The natural ventilation air current flow around the mine simply because the downcast air column is heavier than the...
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Siddharth Urmaliya
Dec 13, 20212 min read
VENTILATION- Mechanical ventilation, Natural ventilation: MiningSYNC
VENTILATION Ventilation of mines is a form of air conditioning by the distribution of air currents in U/G opening in quantity sufficient...
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Siddharth Urmaliya
Aug 23, 20211 min read
Gate 2007 Rock mechanics- Stress Que-Ans
Que- Radial stress on the excavation boundary of a circular Tunnel is : A) Always zero B) Always positive C) Always Negative D) positive...
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Ankit kerketta
Aug 22, 20212 min read
HUMIDITY
Humidity:- the water content present in atmosphere is called Humidity. there are three type of Humidity:- 1) Absolute Humidity:- ratio...
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Ankit kerketta
Aug 22, 20211 min read
Temperature
Temperature:- heat content of any substance. Dry bulb temp.= It's a ambient temperature of air Wet bulb temp.= Temperature of air at...
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Siddharth Urmaliya
Aug 22, 20211 min read
GATE 2007 ventilation-Fan pressure Que [MiningEngineering MN]
Que- At a fan pressure of 450 Pascal, 50m³/s of air flows through a mine. when fan stops 10 m³/s of air still flows in the same...
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Siddharth Urmaliya
Aug 4, 20211 min read
Coal India Limited Announces Recruitment of Management Trainees Via GATE 2021 Score
Coal India Limited Announces Recruitment of Management Trainees Via GATE 2021 Score By MiningSYNC / August 4, 2021 / Coal India Limited...
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Ankit kerketta
May 20, 20211 min read
Coal Dust Explosion
CoalDust Explosion 👉Coal dust, when suspended in air, is capable of bursting into explosion & propogate it even in the absence of...
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Ankit kerketta
May 19, 20211 min read
Firedamp Explosion
Fire Damp Explosion Presence of firedamp in air between 5.4% to 14.8% forms an explosive mixture. if suitable source of Ignition is...
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Ankit kerketta
May 19, 20211 min read
Explosion in Mine
Mine Explosion An explosion is a sudden combustion process of great intensity, accompanied(साथ में) by release of large quantities of...
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Prashant prajapati
May 13, 20211 min read
Difference Between AVAILABILITY and UTILISATION in Mining Machinery
** INTRODUCTION :- In Mining, we always try to Achieve Higher Production by applying Highly Efficient Machines/Equipment and Modern...
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Raghav Prasad Dubey
May 12, 20212 min read
Barton’s Q-system (Rock quality index, Norwegian Geotechnical Institute)Tunneling Index (Q)
2.1.1 Barton’s Q-system ( Tunneling Index, Rock quality index, Norwegian Geotechnical Institute) The Q-system for rock mass...
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Siddharth Urmaliya
May 8, 20211 min read
MINE SUBSIDENCE
Mine Subsidence Subsidence is a time-dependent deformation either natural or man induced , in which there is a lowering of ground surface...
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Siddharth Urmaliya
May 3, 20212 min read
ATKINSON'S EQUATION
ATKINSON'S EQUATION Before discussing Atkinson's formual/equation . we have to understand the LAW'S OF MINE AIR FRICTION, then we can...
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Siddharth Urmaliya
Apr 27, 20214 min read
SPACE/ASTEROID MINING
SPACE MINING Space Mining The costs run high and the returns are not immediate but extraterrestrial mining is now within the realms of...
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Ankit kerketta
Apr 26, 20211 min read
Mixture of Gases & permissible limit in UG mines
•Mixture of Gases:- Fire Damp:- It is a mixture of methane & other trace amount of other gases. Black Damp/ Choke Damp:- Mixture of...
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Ankit kerketta
Apr 26, 20212 min read
Spontaneous Heating & Incubation period
Spontaneous Heating:-It is defined as the process of self heating resulting eventually in its ignition without the application of...
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Abhishek Sahu
Apr 25, 20211 min read
BLAST CASTING
GENERAL PRINCIPLE: Blast casting by explosives in surface coal mines offers significant operational and economical benefits. "Blast...
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