overburden


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Related to overburden: Overburden pressure

overburden

Geology the sedimentary rock material that covers coal seams, mineral veins, etc.

overburden

[′ō·vər‚bərd·ən]
(geology)
Rock material overlying a mineral deposit or coal seam. Also known as baring; top.
Material of any nature, consolidated or unconsolidated, that overlies a deposit of useful materials, ores, or coal, especially those deposits that are mined from the surface by open cuts.
Loose soil, sand, or gravel that lies above the bedrock.
(mining engineering)
To charge in a furnace too much ore and flux in proportion to the amount of fuel.

overburden

1. The entire thickness of soil over rock or over a specific bearing stratum.
2. An undesirable top layer covering rock, gravel, or other useful material wanted for construction.
References in periodicals archive ?
Company officials said that with open-cast mining accounting for more than 90% of the miner's total production, overburden removal had to keep pace with rising production and this would require faster deployment of higher capacity mining equipment if the 660-million production target can be achieved.
This innovative fresh air intake system for overburden drills supplies clean air into the operator's cab simply, reliably and effectively.
The primary technical challenge was to develop an overburden system that was easily removable to access the waterproofing membrane.
"The recent Analysis of Retreat Mining Pillar Stability LaModel program--or ARMPS-LAM--which was developed at WVU, was an initial step toward incorporating mechanistic overburden behavior into pillar design," said Tulu.
In the theoretical aspect, the mechanisms of rock burst failures in the overburden during underground mining remain unclear, and a consistent understanding is yet to be achieved on the overburden's deformation and failure processes, or its stress distribution patterns.
Under the shallow coal mining, the instability of the overburden caving zone often brings about a sharp increase in support resistance and which is an important threat to the safety mining.
The objective of this investigation was thus to study the effect of plantation on mine spoil biological properties and carbon pools in four chronosequences of coal overburden sites in a dry tropical area.
In these systems of development the equality of speeds of movement of an overburden and mining stope has to be observed.
Let the overlying water be 20, 30, or 35 m thick and let the tunnel overburden be 25, 35, or 45 m thick.
Although I like Arabic as a language, I don't want to overburden her if it is optional," the parents of a grade 11 pupil at The Model School Abu Dhabi said.
In clay mining, the overburden (the layer above the clay seam) and any possible water source nearby can contain organic material which, when decomposed, can produce soluble salts.
The equipment is for the expansion of Adaro's mine in the district of Tanjung and will reduce the average hauling distance of the overburden trucking operations, and dependency on oil.