Excavation HandbookMcGraw-Hill, 1981 - 1000 halaman |
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Halaman 12-32
... Mining Figure 12-20 Sidehill contour mining of coal and the arrangement of the key machinery . The shovel lends itself to contour mining and it is equally efficient in area mining , as shown in Figure 12-21 and in the area mining ...
... Mining Figure 12-20 Sidehill contour mining of coal and the arrangement of the key machinery . The shovel lends itself to contour mining and it is equally efficient in area mining , as shown in Figure 12-21 and in the area mining ...
Halaman 12-59
... mining method is used . Figure 12-41 shows by an area - mining diagram the several operations for extracting the coal and then reclaiming the spoil banks for farming , graz- ing , foresting , and other commercial purposes . Sometimes ...
... mining method is used . Figure 12-41 shows by an area - mining diagram the several operations for extracting the coal and then reclaiming the spoil banks for farming , graz- ing , foresting , and other commercial purposes . Sometimes ...
Halaman 12-60
... Mining Haul Truck Spoil Bank Reclaimed Area Figure 12-41 Area mining of coal and the arrangement of the key machinery . The walker dragline is used commonly in area mining , as is the stripping shovel as shown in Figure 12-21 . The ...
... Mining Haul Truck Spoil Bank Reclaimed Area Figure 12-41 Area mining of coal and the arrangement of the key machinery . The walker dragline is used commonly in area mining , as is the stripping shovel as shown in Figure 12-21 . The ...
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ROCK WEATHERING | 3-4 |
LANDFORMS AND GEOMORPHOLOGY | 4-4 |
OPENCUT EXCAVATIONS | 5-3 |
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Istilah dan frasa umum
alluvium average axles backhoe blasthole borrow pit brake horsepower bucket bucket loader bulldozer calculated California capacity clearing and grubbing cofferdam compaction compactor compressor conveyor cost of ownership crawler-tractor cubic yard cybm cybm/h cysm depth diameter diesel engine dipper Direct job unit dragline dredge dumping efficiency electric embankment equation estimated explosives factor fill freeway friction ft/min ft/s gal/min grade granite haul road haulage head loss heavyweight hoist hole horsepower hourly production igneous igneous rock illustrates job unit cost lb/in² length limestone loading machine machinery material maximum medium metamorphic rocks mi/h off-the-road open-pit mining ownership and operation percent pipe pump quarry r/min rock excavation rock formation rock haulers rock-earth rolling resistance scraper sedimentary rock shovel shown in Figure slope soft specifications Table tare weight tire tons tow-type tractor tractor-bulldozer tractor-rippers truck valve velocity water wagon weight wellpoint wheels-tires width Work-cost indicator yd³