Definition of Hydraulic mining. Meaning of Hydraulic mining. Synonyms of Hydraulic mining

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Definition of Hydraulic mining

Hydraulic mining
Hydraulic Hy*drau"lic, a. [F. hydraulique, L. hydraulicus, fr. Gr. ?, ?, a water organ; "y`dwr water + ? flute, pipe. See Hydra.] Of or pertaining to hydraulics, or to fluids in motion; conveying, or acting by, water; as, an hydraulic clock, crane, or dock. Hydraulic accumulator, an accumulator for hydraulic machinery of any kind. See Accumulator, 2. Hydraulic brake, a cataract. See Cataract, 3. Hydraulic cement, a cement or mortar made of hydraulic lime, which will harden under water. Hydraulic elevator, a lift operated by the weight or pressure of water. Hydraulic jack. See under Jack. Hydraulic lime, quicklime obtained from hydraulic limestone, and used for cementing under water, etc. Hydraulic limestone, a limestone which contains some clay, and which yields a quicklime that will set, or form a firm, strong mass, under water. Hydraulic main (Gas Works), a horizontal pipe containing water at the bottom into which the ends of the pipes from the retorts dip, for passing the gas through water in order to remove ammonia. Hydraulic mining, a system of mining in which the force of a jet of water is used to wash down a bank of gold-bearing gravel or earth. [Pacific Coast] Hydraulic press, a hydrostatic press. See under Hydrostatic. Hydraulic propeller, a device for propelling ships by means of a stream of water ejected under water rearward from the ship. Hydraulic ram, a machine for raising water by means of the energy of the moving water of which a portion is to be raised. When the rush of water through the main pipe d shuts the valve at a, the momentum of the current thus suddenly checked forces part of it into the air chamber b, and up the pipe c, its return being prevented by a valve at the entrance to the air chamber, while the dropping of the valve a by its own weight allows another rush through the main pipe, and so on alternately. Hydraulic valve. (Mach.) (a) A valve for regulating the distribution of water in the cylinders of hydraulic elevators, cranes, etc. (b) (Gas Works) An inverted cup with a partition dipping into water, for opening or closing communication between two gas mains, the open ends of which protrude about the water.

Meaning of Hydraulic mining from wikipedia

- Hydraulic mining is a form of mining that uses high-pressure jets of water to dislodge rock material or move sediment. In the placer mining of gold or...
- separate the precious material from the deposit, a method known as hydraulic mining, hydraulic sluicing or hydraulicking. The word placer derives from the Spanish...
- different hydraulic applications were developed, including public water supplies, innumerable aqueducts, power using watermills and hydraulic mining. They...
- of large volumes of water brought to the minehead by aqueducts for hydraulic mining. The exposed rock was then attacked by fire-setting, where fires were...
- Hydraulic engineering as a sub-discipline of civil engineering is concerned with the flow and conveyance of fluids, prin****lly water and sewage. One...
- Mining in ancient Rome utilized hydraulic mining and shaft mining techniques in combination with equipment such as the Archimedes ****. The materials...
- Hydraulic fracturing is a well stimulation technique involving the fracturing of formations in bedrock by a pressurized liquid. The process involves the...
- alluvial tin deposits, and is known as hydraulic mining. A smaller scale version of the same method is placer mining, and both may have been used to work...
- especially in Ireland and Spain. Romans emplo**** slave labour and used hydraulic mining methods, such as hushing and ground sluicing on a large scale to extract...
- mountains), a Roman mining technique described by Pliny the Elder in 77 AD. The technique emplo**** was a type of hydraulic mining which involved undermining...