Iskoristivost stijenske mase i mogući potencijali rezervi prirodnog kamena prema Lasky-evom zakonu

Scientific paper - Original scientific paper

• Title (english): Utilization of the rock mass and possible potentials reserves of natural stone to the Lasky-low
• Author: Ivan Tomašić
• Author's institution: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Mineralogy, Petrology and Mineral Resources)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology

Abstract (croatian)

Eksploatacijom i preradom malih blokova i tombolona povećavaju
se raspoložive rezerve. Kamen se na taj način racionalnije koristi,
a rezerve se povećavaju s obzirom da se i iskorištenje ležištakamenoloma
znatno povećava. Takav pristup omogućuje da se u
ležištima prirodnog kamena primjeni Laskyjev zakon. Temeljem
tog zakona, možemo ustvrditi: ako se u ležištu veličina blokova
smanjuje aritmetički, rezerve rastu geometrijski, odnosno eksponencijalno.
Na prikazanim primjerima analizirana je iskoristivost
stijenske mase kod primjene dviju različitih tehnologija eksploatacije.
Osim što se eksploatacijom različitih veličina blokova postiže
velika iskoristivost stijenske mase, eksploatacijom agregata i punila
iskoristivost se još više povećava. Potrebno je posebno naglasiti
postojanje graničnog područja, kada je, s obzirom na položaj i
gustoću diskontinuiteta, potrebno donijeti odluku o primjeni I.
ili II. varijante eksploatacije (izrada vertikalnih i horizontalnih
rezova ili pak odvajanje blokova uzduž prirodnih diskontinuiteta
ili pomoću kosih rezova). Primjer je analiziran i prikazan kao dvodimenzionalni
problem.

Abstract (english)

Exploitation and processing of small stone blocks and tombolons increase the resources. The natural stone is than rationally used, but the resources greatly increase due to the utilization of deposits-quarries. This approach ensures that in the deposits size of natural stone could be applied Lasky's-law. Based on this law we can say, if in the deposits size of the blocks decreases arithmetically then reserve increases geometrically or exponentially. On presented examples the utilization of the rock mass was analyzed in the application of two different technologies of exploitation.
Besides, the exploitation of different block size achieves high utilization of the rock mass, exploitation of aggregates and fillers yield even more increases. It is necessary to emphasize the existence of the border areas, when considering the location and density discontinuity, should render a decision to apply the I or II variant of the exploitation (making vertical and horizontal cuttings or separation of the bocks along natural discontinuities or using slanting cuts). The example is shown and analyzed as a two-dimensional problem.

• Keywords (croatian): prirodni kamen; Laskyjev zakon; iskoristivost stijenske mase
• Language: croatian
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - domestic
• Publication version: Published version
• Journal title: Klesarstvo i graditeljstvo
• Numbering: vol. 22, no. 3-4, pp. 82-95
• p-ISSN: 0353-7897
• URN:NBN: urn:nbn:hr:169:962376
• Publication: 2011
• Project: Number: 195-1953068-2704; Title (croatian): Dinarski krš: geološka evolucija, mineralne sirovine, paleotla i tla; Title (english): Dinaric karst: geological evolution, mineral resources, paleosols and soils; Leader: Goran Durn; Jurisdiction: Croatia; Funding stream: ZP
• Document URL: https://hrcak.srce.hr/95076
• Type of resource: Text
• Access conditions: Open access
• Created on: 2024-03-26 15:07:12