Total Questions: 60 Questions | Time Duration: 60:00 Minutes
<p class="MsoNormal"><b><font size="3" color="#660066">Opencast Mining: </font></b><font size="3">Mine Planning, Opening of coal seams and preparation for excavation; box cut, types; selection of <span style="background-color: transparent;">site; Layout of Opencast mine, parameters, formation of production benches; ripping; types of rippers; concept of </span><span style="background-color: transparent;">rippability and cycle of operation; drilling; blast hole drills; performance parameters; requirement of number of drills; </span><span style="background-color: transparent;">blasting; blast design; factors influencing blast design; deep hold blasting; calculation of charge per hole; </span><span style="background-color: transparent;">ground vibration; secondary blasting and problems and hazards related to blasting; cast blasting; environment friendly </span><span style="background-color: transparent;">non- blasting techniques, safety aspects. </span><span style="background-color: transparent;">Discontinuous / cyclic methods of excavation and transport: shovel dumper operation; applicability of electric </span><span style="background-color: transparent;">shovel and hydraulic excavators; cycle time and productivity calculation; estimation of equipment fleet; dragline </span><span style="background-color: transparent;">operation; side casting; Dragline balancing diagram; calculation of reach; cycle time; productivity calculation; bucket </span><span style="background-color: transparent;">capacity requirement; scrappers; types; methods of work; push pull operation etc., Bucket Wheel Excavator - </span><span style="background-color: transparent;">operational methods (lateral block, half block and full block etc.,)productivity calculation; continuous Surface Miner - </span><span style="background-color: transparent;">operational methods (wide / full base methods, wide / full bench, block mining, stepped cut, empty travel back, turn </span><span style="background-color: transparent;">back and continuous mining methods); conveyors; shiftable and high angle conveyors; mode of operation etc;, OITDS </span><span style="background-color: transparent;">operator independent truck dispatch system); in-pit crushing, Coal Handling Plants, Silo and rapid loading system, </span><span style="background-color: transparent;">strip-mining; opencast mining over developed coal seams; high-wall mining; safety aspects.</span></font></p><p class="MsoNormal"><font size="3"><br></font></p><p class="MsoNormal"><font size="3">Construction of Haul roads and ramps: width, super elevation / camber, central bund, side bund, slope, base, sub-</font></p><p class="MsoNormal"><font size="3">base, surface, Surface friction, materials required, drainage, curve, visibility, machines to be used, maintenance,<span style="background-color: transparent;"> </span><span style="background-color: transparent;">monitoring, Haul road crossings, T-junction, tri-junction, four-way crossings, parameters, Parking of HEMM, parking </span><span style="background-color: transparent;">of dump trucks, GO-line design, Shelter construction, view point construction. </span><span style="background-color: transparent;">Watering of mine roads for dust suppression, methods to be used, hazards due to overwatering, type of water </span><span style="background-color: transparent;">spraying, spot or strip watering. </span><span style="background-color: transparent;">Extraction of Methane: Surface to Inseam Methane Drainage, Coal Bed Methane, Abandoned Mine Methane and </span><span style="background-color: transparent;">Gas content of Coal; Resource and Reserve estimation; Methods of drilling and precautions required while </span><span style="background-color: transparent;">exploration and extraction of methane; Gas production rate, project life and economy; Methods of Collection and </span><span style="background-color: transparent;">conveying/transportation of methane; Installation of extraction wells; Hazards involved.</span></font></p>
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