Annual Report,2009 - Directorate General of Mines Safety
Annual Report,2009 - Directorate General of Mines Safety Annual Report,2009 - Directorate General of Mines Safety
DGMS Annual Report, 2009 loaders; bucket wheel excavators; spreaders; surface miners and their maintenance aspects. Generation, transmission and utilization of power, steam, compressed air; safety aspects. Preventive, periodical and total maintenance systems in mines. Mine electrical engineering :- Generation, Transmission and distribution of electrical power in mines; radial and ring main distribution; substation arrangements; short transmission lines; cables; switch gears and protective devices; protective relays; circuit breakers; gate-end box; drill panel; field switch; transwitch; symmetrical fault and circuit breaker rating; mine signaling; power factor improvement; electrical drives and semiconductor controllers; selection of motors and starters; semiconductor devices; principles of operation of thyristor controlled variable speed electrical drives; electrical breaking; earthing; flameproof enclosures and intrinsic safety; use of high voltage operational equipment in mines. (e) Mine Surveying Linear measurement :- Instruments for measuring distance and ranging, units of measurement in surveying. EDM :- Principles of measurements; types; correction and selection of instrument. Angular measurement :- Prismatic compass; bearing of lines; local attraction; magnetic declination. Theodolite :- Modern micro-optic theodolites; measurement of horizontal and vertical angles; theodolite traversing; traverse calculation; computation of coordinates; adjustment of traverse; temporary and permanent adjustment; Gyro thedolite; principle and determination of Gyro north; determination of true bearing by equal altitude method; tacheometry. Levelling :- Levelling instruments; types of leveling; characteristics and uses of contours; methods of contouring; booking and reduction methods; shaft depth measurement; temporary and permanent adjustment of levels. Controlled surveys :- Triangulation; trilateration; application of GPS and Total Station in mine surveying. Field astronomy :- Astronomical terms; determination of true bearing by equal altitude method; Gyro theodolite; principle and determination of Gyro north. Astronomical triangle; conversion of time system and precise determination of azimuth by astronomical methods. Correlation :- Methods of correlation surface and underground including Gyro- Laser combination. Development surveys :- Surveys of flat, moderately and steeply inclined and vertical workings; control of direction and gradient in drifts and roadways traversing along steep working with or without auxiliary telescopes. Theory of errors and adjustments: Causes and classification of errors; inclines of precision; laws of weight; propagation and adjustment of errors; adjustment of triangulation figures. National grid : Map projection Cassini Lambert‟s polyconic and universal transfers Mercator; transformation of coordinates. Area and volume calculation :- Different methods and their limitations; earth work and building estimation; laying out of rail curves, surface and underground. Dip, and strike problems; outcrop problems; borehole surveying and calculations. 212
DGMS Annual Report, 2009 Types of plans and their preparation, care, storage and preservation; legislation concerning mine plans and sections; duties and responsibilities of surveyors. Application of computers in mine surveying and preparation of plans. APPENDIX – I SYLLABUS FOR EXAMINATION FOR MINE SURVEYORS CERTIFICATES OF COMPETENCY (Under Coal Mines Regulations, 1957) FIRST PAPER Linear measurement :- Instruments for measuring distance ranging, chain surveying; errors in chaining and plotting; optical square. EDM :- Principles of measurements; types; correction and selection of instrument. Angular measurement :- Prismatic compass; bearing of lines; local attraction; magnetic declination. Plan Table Surveying; methods contouring using plane table and micro-optic alidade. Miners‟ dials and other compass instruments; dialing; loose and fast needle surveying. Theodolite :- Modern micro-optic theodolites; measurement of horizontal and vertical angles; theodolite traversing; traverse calculation; computation of coordinates; adjustment of traverse; temporary and permanent adjustment. Levelling :- Levelling instrument types of leveling; booking and reduction methods; temporary and permanent adjustment of levels; geometrical, trigonometric and physical leveling; characteristics and uses of contours; methods of contouring; traverse; co-ordinates and leveling problems. Tachometry:- Controlled surveys :- Triangulation; trilateration; application of GPS and Total Station in mine surveying. Use, care, testing, and adjustments of instruments. SECOND PAPER Field astronomy :- Astronomical terms; determination of true bearing by equal altitude method; Gyro theodolite; principle and determination of Gyro north, astronomical triangle; conversion of time systems and precise determination of azimuth by astronomical methods. National grid : Map projection Cassini Lambert‟s polyconic and universal transfers Mercator; transformation of coordinates, vertical projections; mine models. Geodesy :- Geod, spheroid and ellipsoid, geocentric, geodetic and astronomical coordinates, orthometric and dynamic heights. Photogrammetry :- Introduction; scale of a vertical photograph; photographs versus maps; application of photogrammetry and remote sensing in mining. Correlation :- Method of correlation surface and underground including Gyro- Laser combination. Theory of errors and adjustments: Causes and classification of errors; inclines of precision; laws of weight propagation and adjustment of errors; adjustment of triangulation figures. 213
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DGMS <strong>Annual</strong> <strong>Report</strong>, <strong>2009</strong><br />
Types <strong>of</strong> plans and their preparation, care, storage and preservation;<br />
legislation concerning mine plans and sections; duties and responsibilities <strong>of</strong><br />
surveyors.<br />
Application <strong>of</strong> computers in mine surveying and preparation <strong>of</strong> plans.<br />
APPENDIX – I<br />
SYLLABUS FOR EXAMINATION FOR MINE<br />
SURVEYORS CERTIFICATES OF COMPETENCY<br />
(Under Coal <strong>Mines</strong> Regulations, 1957)<br />
FIRST PAPER<br />
Linear measurement :- Instruments for measuring distance ranging, chain<br />
surveying; errors in chaining and plotting; optical square.<br />
EDM :- Principles <strong>of</strong> measurements; types; correction and selection <strong>of</strong><br />
instrument.<br />
Angular measurement :- Prismatic compass; bearing <strong>of</strong> lines; local attraction;<br />
magnetic declination.<br />
Plan Table Surveying; methods contouring using plane table and micro-optic<br />
alidade.<br />
Miners‟ dials and other compass instruments; dialing; loose and fast needle<br />
surveying.<br />
Theodolite :- Modern micro-optic theodolites; measurement <strong>of</strong> horizontal and<br />
vertical angles; theodolite traversing; traverse calculation; computation <strong>of</strong> coordinates;<br />
adjustment <strong>of</strong> traverse; temporary and permanent adjustment.<br />
Levelling :- Levelling instrument types <strong>of</strong> leveling; booking and reduction<br />
methods; temporary and permanent adjustment <strong>of</strong> levels; geometrical, trigonometric<br />
and physical leveling; characteristics and uses <strong>of</strong> contours; methods <strong>of</strong> contouring;<br />
traverse; co-ordinates and leveling problems.<br />
Tachometry:- Controlled surveys :- Triangulation; trilateration; application <strong>of</strong><br />
GPS and Total Station in mine surveying.<br />
Use, care, testing, and adjustments <strong>of</strong> instruments.<br />
SECOND PAPER<br />
Field astronomy :- Astronomical terms; determination <strong>of</strong> true bearing by equal<br />
altitude method; Gyro theodolite; principle and determination <strong>of</strong> Gyro north,<br />
astronomical triangle; conversion <strong>of</strong> time systems and precise determination <strong>of</strong><br />
azimuth by astronomical methods.<br />
National grid : Map projection Cassini Lambert‟s polyconic and universal<br />
transfers Mercator; transformation <strong>of</strong> coordinates, vertical projections; mine models.<br />
Geodesy :- Geod, spheroid and ellipsoid, geocentric, geodetic and<br />
astronomical coordinates, orthometric and dynamic heights.<br />
Photogrammetry :- Introduction; scale <strong>of</strong> a vertical photograph; photographs<br />
versus maps; application <strong>of</strong> photogrammetry and remote sensing in mining.<br />
Correlation :- Method <strong>of</strong> correlation surface and underground including Gyro-<br />
Laser combination.<br />
Theory <strong>of</strong> errors and adjustments: Causes and classification <strong>of</strong> errors; inclines<br />
<strong>of</strong> precision; laws <strong>of</strong> weight propagation and adjustment <strong>of</strong> errors; adjustment <strong>of</strong><br />
triangulation figures.<br />
213