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Journal of Mining and Metallurgy A: Mining
2021, vol. 57, br. 1, str. 1-17
Uticaj podataka geoloških domena na modeliranje i procenu resursa ležišta gvožđa u Nkout (Južni Kamerun)
Boroh A.W.a, Sore-Gamo K.Y.a, Ayiwouo Ngounouno M.b, Gbambie Mbowou I.B.a, Ngounouno I.a
aUniversity of Ngaoundere, School of Geology and Mining Engineering, Meiganga, Cameroon
bMinistry of Mines and Technological Industries, Yaoundé, Cameroun

e-adresa: williamboroh@gmail.com
Ključne reči: efekat informacija; efekat podrške; geološki domen; geohemijsko modelovanje
Sažetak
Ovaj rad se bavi time da li se procena mineralnih resursa može poboljšati uz korišćenje geoloških informacija. Korišćeni geohemijski podaci su sakupljeni sa 116 bušotina u Istočnom Nkout ležištu gvožđa u Južnom Kamerunu. Ovi geohemijski podaci su modelovani uz pomoć Surpac i Isatis softvera da bi se prikazala 3D geohemijska distribucija gvožđa u ležištu. Urađene su statističke a zatim i variogramske analize da bi se proučila prostorna distribucija gvožđa. Domeni za procenu definisani su na osnovu rezultata geoloških i geohemijskih analiza. Određena su četiri domena. Ovi domeni su uglavnom saprolit; siromašan domen ili sveže stene kao što su amfiboliti, graniti i gnajsovi¸bogat domen ili oksidirane stene (BIF) i domen metasedimenata. Da bi se izvršila procena resursa urađen je blok-model ležišta. Sadržaj u svakom bloku procenjen je upotrebom običnog krigovanja i kompozita iz svakog domena. U ovom radu se takođe porede dve vrste procene -procena domena i globalna procena. Verodostojnost dobijenog modela je potvrđena uz pomoć unakrsne validacije. Procena domena je preciznija od globalne procene, tačnije, u vezi analize grešaka, dok geohemijsko modelovanje daje najbolje rezultate ako uzmemo u obzir oblake tačaka predviđenih i procenjenih vrednosti.
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O članku

jezik rada: engleski
vrsta rada: izvorni naučni članak
DOI: 10.5937/JMMA2101001B
primljen: 16.02.2021.
prihvaćen: 29.07.2021.
objavljen u SCIndeksu: 28.12.2021.
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