Development of Technologies for Mining Ores with Instable Hanging Wall Rocks

• Autorzy: Pysmennyi Serhii , Chukharev Serhii , Kourouma Ibrahima Kalil , Kalinichenko Vsevolod , Matsui Anatolii

Identyfikatory

DOI

10.29227/IM-2023-01-13

Warianty tytułu

PL

Rozwój technologii wydobywania rudy z niestabilnymi wiszącymi skałami

• Języki publikacji: EN

Abstrakty

EN

Underground mines of Kryvyi Rih iron ore deposit apply room mining systems or systems with bulk caving of ore and overlying rocks in a ratio of 35% to 65%. Most mines prefer room mining systems with pillar caving due to high, technical and economic indicators. However, when mining certain areas, the problem arises of hanging wall rocks stability. Under the same mining and geological conditions of the deposit, stopes are stable in some areas, but in others waste rocks get in the stope from the side of the hanging wall when a slight exposure is created. Thus, in conditions of instable rocks of the hanging wall, development and improvement of the technology involving room mining is an urgent issue. Analysis of researchers reveals factors that significantly indluence stability of the hanging wall rocks and ore. The developed methods enable determining stability parameters and applying an improved option of room mining system in conditions of the instable hanging wall with the help of a protective ore pillar located at the instable hanging wall. Calculations performed demonstrate that application of the proposed mining system enables an increase in the iron content in the mined ore mass by 0.94%, the increased amount of the ore mass extracted and a profit of 18.73 thousand euros for the whole of a block.

PL

Kopalnie podziemne złoża rudy żelaza w Krzywym Rogu stosują systemy urabiania komorowego lub systemy z zawałem rudy i nadległych skał w stosunku 35% do 65%. Większość kopalń preferuje systemy eksploracji komorowej z zawałem filarowym ze względu na wysokie wskaźniki techniczne i ekonomiczne. Jednak podczas eksploatacji niektórych obszarów pojawia się problem ze stabilnością wiszących skał. W takich samych warunkach górniczo-geologicznych złoża stopnie na niektórych obszarach są stabilne, ale na innych skały płonne dostają się do stopu od strony wiszącej ściany, gdy powstaje niewielkie odsłonięcie. Dlatego też w warunkach niestabilnych skał wiszącej ściany pilnym zagadnieniem jest rozwój i doskonalenie technologii eksploatacji komorowej. Analiza badań ujawnia czynniki, które znacząco wpływają na stabilność wiszących skał i rudy. Opracowane metody umożliwiają wyznaczenie parametrów statecznościowych oraz zastosowanie udoskonalonego wariantu systemu eksploracji pomieszczenia w warunkach niestabilnej ściany wiszącej za pomocą filaru ochronnego rudy, znajdującego się przy niestabilnej ścianie wiszącej. Z przeprowadzonych obliczeń wynika, że zastosowanie proponowanego systemu urabiania umożliwia zwiększenie zawartości żelaza w wydobywanej masie rudy o 0,94%, zwiększenie ilości wydobywanej masy rudy oraz zysk w wysokości 18,73 tys. euro za cały blok.

Słowa kluczowe

EN

mining system; stress; methods; pillar width; rock strength; losses; dilution

PL

system wydobywczy; naprężenia; metody; szerokość filaru; wytrzymałość skały; straty; rozcieńczenie

• Wydawca: Polskie Towarzystwo Przeróbki Kopalin
• Czasopismo: Inżynieria Mineralna
• Rocznik: 2023
• Tom: no. 1
• Strony: 103--112
• Opis fizyczny: Bibliogr. 41 poz., rys., tab.

Twórcy

autor

Pysmennyi Serhii

• Kryvyi Rih National University, Faculty of Mining and Metallurgy, 11 Vitalii Matusevych Str., Kryvyi Rih, 50027, Ukraine

• https://orcid.org/0000-0001-5384-6972

autor

Chukharev Serhii

• National University of Water and Environmental Engineering, 11 Soborna Str., Rivne, 33028, Ukraine
• Central Ukrainian National Technical University, 8, Prospekt Universytetskyi, Kropyvnytskyi, 25006, Ukraine

• https://orcid.org/0000-0002-4623-1598

autor

Kourouma Ibrahima Kalil

• Higher Institute of Mining and Geology of Boké, BP:84, Republic of Guinea

• https://orcid.org/0000-0002-8387-1420

autor

Kalinichenko Vsevolod

• Kryvyi Rih National University, Faculty of Mining and Metallurgy, 11 Vitalii Matusevych Str., Kryvyi Rih, 50027, Ukraine

• https://orcid.org/0000-0002-1938-2286

autor

Matsui Anatolii

• National University of Water and Environmental Engineering, 11 Soborna Str., Rivne, 33028, Ukraine

• https://orcid.org/0000-0001-5544-0175

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu „Społeczna odpowiedzialność nauki” - moduł: Popularyzacja nauki i promocja sportu (2022-2023)