Index Geophysics

eng QUARRY STABILITY ANALYSIS FOR COMPLEX SLIP SURFACES USING THE MATHSLOPE METHOD

hrv PRIMJENA MATHSLOPE METODE U ANALIZI STABILNOSTI STIJENSKIH KOSINA ZA SLOŽENE OBLIKE STIJENSKIH PLOHA

eng Due to the specific characteristics of rock mass compared to other geological materials, the calculation of rock slope stability is very complex. One of the basic characteristics of rock masses is discontinuity, which, to the most degree, is formed by the geological structure and its elements. Because of discontinuities the slip surfaces of complex shapes are formed in rock slopes, mostly of straight and curved segments. The calculation of the stability factor of rock slopes for complex shapes of slip surfaces has been made possible by the development of the MathSlope method. The complex shape of slip surface has been achieved by introduction of planes of discontinuities in the slip surface. Thus, the setting up and searching procedure of critical slip surfaces of complex shapes is very different in the MathSlope method than in other ones. The example of back analysis for the quarry Vukov Dol shows the successfulness in determining the critical slip surface, as well as the calculation factor of stability for the complex shape of slip surface. Apart from calculating the factor of stability for the complex slip surface, the solution for the position of discontinuity on the slope is obtained, which matches with the real position on the quarry.

hrv Proračuni stabilnosti stijenskih kosina izrazito su složeni zbog specifičnih značajki stijenske mase u odnosu na druge geološke materijale. Jedna od osnovnih značajki stijenske mase je diskontinuiranost, koju u najvećoj mjeri čine geološke strukture i njihovi elementi. Zbog prisutnosti diskontinuiteta u stijenskim se kosinama formiraju klizne plohe složenih oblika, najčešće kombinirane od ravnih i zakrivljenih segmenata. Razvojem MathSlope metode omogućen je izračun faktora stabilnosti stijenskih kosina za složene oblike kliznih ploha. Složeni oblik klizne plohe ostvaren je uvođenjem ravnina diskontinuiteta u kliznu plohu. Pri tome se u ovoj metodi način zadavanja kao i postupak traženja kritične klizne plohe složenog oblika bitno razlikuje u odnosu na postojeće metode. Obrađeni primjer povratne analize za kamenolom Vukov Dol pokazuje uspješnost u određivanju kritične klizne plohe kao i proračuna faktora stabilnosti za složeni oblik klizne plohe. Osim izračuna faktora stabilnosti za složenu kliznu plohu dobiveno je i rješenje za kritičan položaj diskontinuiteta na kosini koji se dobro podudara sa stvarnim položajem na kamenolomu.

HRŽENJAK, PETAR

eng Rock slope stability;complex slip surfaces;MathSlope method;quarry stability

hrv Stabilnost stijenskih kosina;složene klizne plohe;MathSlope metoda;stabilnost kamenoloma

Faculty of Mining, Geology and Petroleum Engineering University of Zagreb

2004

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Rudarsko-geološko-naftni zbornik

ISSN 1849-0409 (Online)

Volume 16

Issue 1

eng

info:eu-repo/semantics/openAccess

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