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goaf

采空区; 不含矿的岩石

The Collaborative International Dictionary of English v.0.48 (gcide)

Gove \Gove\ (g[=o]v), n. [Also {goaf}, {goof}, {goff}.]
A mow; a rick for hay. [Obs.] --Tusser.
[1913 Webster]

Goaf \Goaf\; n.; pl. {Goafs}or {Goaves}. [Cf. 1st {Gob}.]
(Mining)
That part of a mine from which the mineral has been partially
or wholly removed; the waste left in old workings; -- called
also {gob} .
[1913 Webster]

{To work the goaf} or {To work the gob}, to remove the
pillars of mineral matter previously left to support the
roof, and replace them with props. --Ure.
[1913 Webster]

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英文字典中文字典相关资料:

goaf - Wiktionary, the free dictionary
goaf (countable and uncountable, plural goafs or goaves) A rick or stack (of hay, etc ) when laid up inside a barn (e g , as winter fodder) That part of a mine from which the mineral has been partially or wholly removed The waste left in old mine workings; goafing
goaf, n. ¹ meanings, etymology and more | Oxford English Dictionary
What does the noun goaf mean? There are two meanings listed in OED's entry for the noun goaf See ‘Meaning use’ for definitions, usage, and quotation evidence
Goaf hole stability - CSIRO
Understanding the goaf-hole shearing process is vital in designing and operating an efficient goaf-gas drainage system, especially as goaf-hole failure is one of the critical problems in many gassy mine sites
GOAF definition and meaning | Collins English Dictionary
Mining the waste left in old mine workings Click for English pronunciations, examples sentences, video
GOAF Definition Meaning - Dictionary. com
But experts said that the preferred theory was that a collapse of the mine's roof in the "goaf" - the void left behind after coal is removed - released methane into the mine From BBC Goaf, gōf, n a rick: the coal-waste left in old workings
Goaf - definition of goaf by The Free Dictionary
Define goaf goaf synonyms, goaf pronunciation, goaf translation, English dictionary definition of goaf n mining the waste left in old mine workings Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994,
Opium and Alkaloid Works - Wikipedia
The Government Opium and Alkaloid Factories (GOAF) is an Indian government-owned organisation Its headquarter is located in New Delhi The overall supervision of the organisation comes under the purview of Department of Revenue, Ministry of Finance [1]
Locating and defining underground goaf caused by coal mining from space . . .
As the coal mining-induced goaf is often a cuboid-shaped void and eight critical geometric parameters (i e , length, width, height, inclined angle, azimuth angle, mining depth, and two central geodetic coordinates) are capable of locating and defining this underground space, the proposed method reduces to determine the eight geometric
Home | GOAF
GOAF provides shoes, clothing, books and toys to orphans and vulnerable children in economically distressed and disaster areas These include: Uganda, Nigeria, Chile, Brazil, Haiti, Zimbabwe, Trinidad, Afghanistan, Pakistan, Vietnam, Jamaica, Detroit and a Native American reservation in S Dakota

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