Excavation HandbookMcGraw-Hill, 1981 - 1000 halaman |
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Halaman 2-11
... veins and disseminations in igneous and metamorphic rocks . Medium to hard excavation . Chalcopyrite , a copper and iron sulfide of 34 % copper content . Light to medium color . Occurs in veins and disseminations in igneous and ...
... veins and disseminations in igneous and metamorphic rocks . Medium to hard excavation . Chalcopyrite , a copper and iron sulfide of 34 % copper content . Light to medium color . Occurs in veins and disseminations in igneous and ...
Halaman 2-12
... veins in igneous , sedimentary , and metamorphic rocks . Medium to hard excavation . Magnesite , a magnesium carbonate of 29 % magnesium content . Light color . Occurs in veins in serpentine , as dolomite , and in sedimentary deposits ...
... veins in igneous , sedimentary , and metamorphic rocks . Medium to hard excavation . Magnesite , a magnesium carbonate of 29 % magnesium content . Light color . Occurs in veins in serpentine , as dolomite , and in sedimentary deposits ...
Halaman 5-10
... vein by the 8 - yd3 coal shovel , and coal hauling from the mine to the preparation plant by the 25 - ton bottom - dump haulers . In this central Illinois mine the coal vein is 5 ft thick and the highwall to the right of TABLE 5-1 ...
... vein by the 8 - yd3 coal shovel , and coal hauling from the mine to the preparation plant by the 25 - ton bottom - dump haulers . In this central Illinois mine the coal vein is 5 ft thick and the highwall to the right of TABLE 5-1 ...
Isi
ROCK WEATHERING | 3-4 |
LANDFORMS AND GEOMORPHOLOGY | 4-4 |
OPENCUT EXCAVATIONS | 5-3 |
Hak Cipta | |
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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/in˛ 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 ydł