Difference between UNSAFE ACTS, UNSAFE CONDITIONS, NEAR MISS and ACCIDENT
UNSAFE ACTS, UNSAFE CONDITIONS, NEAR MISS and ACCIDENT
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Raghav Prasad Dubey
Apr 9, 20211 min read
FAN LAWS
FAN LAWS The fan laws are a set of proportionalities relating each of the following parameters of airflow with fan speed (n), air density...
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Siddharth Urmaliya
Apr 8, 20211 min read
Motive Column :
Motive column Motive column is a height of imaginary column of air that produces a pressure equal to difference of pressure between...
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Ankit kerketta
Apr 8, 20211 min read
Roof bolt & its components
Roof Bolt:- It is made of MS or TMT steel bar & fixed in a hole by drilling vertical in roof & it grips the strata & support the...
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Siddharth Urmaliya
Apr 7, 20211 min read
NATURAL VENTILATION
Natural ventilation- Mine Airflow caused by pressure difference between upcast & downcast shaft [Because of unequal densities of weight...
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Raghav Prasad Dubey
Apr 7, 20212 min read
Remote Sensing
Remote sensing is the science (and to some extent ,art) of acquiring information about the Earth's surface without actually being in...
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Ankit kerketta
Apr 7, 20211 min read
Ignition temperature & Lag on ignition
•Ignition temperature:- The minimum/lowest temperature at which any substance or gas starts to burn. Ignition temp.of methane is usually...
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Prashant prajapati
Apr 7, 20211 min read
About BREAK DETECTORS
BREAK DETECTOR It is used to detect cracks or breaks in blasting hole in U/G Mines. Regulation require that no shot hole shall be charged...
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Apr 7, 20211 min read
CLASSIFICATION OF EXPLOSIVES AND ACCESSORIES :
CLASS 1 - GUN POWDER CLASS 2 - NITRATE MIXTURE (EXAMPLE- GN/1 , POWERFLO, GODYNE, PENTADYNE ETC.) CLASS 3- NITRO COMPOUNDS. EXAMPLE-...
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Apr 6, 20211 min read
Kuz ram model
Kuz ram model is used to predict blast fragmentation distribution in mining industry. This model uses rockmass property , Blast pattern...
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Siddharth Urmaliya
Apr 6, 20211 min read
MINE Gases & EXPOSURE LIMIT-
Composition of Atmospheric Air : Exposure LIMITS - Threshold limit values (TLV): It is the maximum/minimum concentration of constituent...
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Raghav Prasad Dubey
Apr 6, 20211 min read
ROCK BURST - Phenomenon and Triggering agents
ROCK BURST Rock burst is a case of rock failure in underground that combines suddenness and violence on a sufficiently large scale to...
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shivank pandey
Apr 6, 20211 min read
What is solid blasting and what type of initiation system we used and why ?
Solid blasting - solid blasting is a new approach blasting system by eliminating a cutting methodology for generating free face. In this...
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shivank pandey
Apr 6, 20211 min read
Explosive and their types
Explosive is the mechanical mixture of substances chemical or chemical compound that can be exploded by application of fire or...
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Abhishek Sahu
Apr 6, 20211 min read
HOLE UTILISATION FACTOR
It is the ratio between length of advanced face to the Length of drilled hole. In drilling technology we consider a important factor to...
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Ankit kerketta
Apr 5, 20211 min read
Difference b/w Low & High Rank of Coal
Low Rank coal. High Rank coal •Low carbon • High carbon content content •Low calorific ...
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Siddharth Urmaliya
Apr 5, 20211 min read
Some Important UNITS:
PRESSURE 1mmHg=13.6mmwg=133.3N/m²(pa) 1mmwg=9.81N/m²(pa) 1atm=10.36m of water = 760 MM of mercury 1 bar = 10⁵ pa = 1 atm 1mmwg=1kg/m²...
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Ankit kerketta
Apr 4, 20211 min read
Inertisation
It is a process by which compressed Carbon di-oxide or Nitrogen gas is circulated to underground mine through borehole or pipe. •It is...
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Siddharth Urmaliya
Nov 11, 20201 min read
Degree of gassiness based upon METHANE EMISSION-
CLASSIFICATION OF COAL MINES- Degree of gassiness (A/c to Emission of gas) 1. % of Inflammable gas on the general body of air. 1st degree ...
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Siddharth Urmaliya
Nov 10, 20201 min read
Contiguous Seam Extraction⛏
Contiguous Seam Extraction Parting Between two seam less than 9 mtrs but more than 3 mtrs.. TOP Seam ------------------------------------...
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