Excavation HandbookMcGraw-Hill, 1981 - 1000 halaman |
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Halaman 7-14
... Drill The track drill is perhaps the most popular exploratory drill for the rock excavator because of its availability , portability , depth range , and indications of drilling speeds to be encountered in blast - hole drilling . The ...
... Drill The track drill is perhaps the most popular exploratory drill for the rock excavator because of its availability , portability , depth range , and indications of drilling speeds to be encountered in blast - hole drilling . The ...
Halaman 7-17
... drill , the rotary drill using either drag bit or tricone bit furnishes valuable data anticipatory to future drilling and blasting . This is especially true if use of the rotary drill with tricone bit is planned for the blasthole ...
... drill , the rotary drill using either drag bit or tricone bit furnishes valuable data anticipatory to future drilling and blasting . This is especially true if use of the rotary drill with tricone bit is planned for the blasthole ...
Halaman 11-123
... drill had previously put down a row of slanted holes along the slope line to the left of the drill for preshear- ing of the face of cut . The track drill is a favorite one for exploratory work as it can pull the air compressor over ...
... drill had previously put down a row of slanted holes along the slope line to the left of the drill for preshear- ing of the face of cut . The track drill is a favorite one for exploratory work as it can pull the air compressor over ...
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/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