Continuous mining at opencast mines in Kansk-Achinsk

Journal Article · Tue Aug 01 04:00:00 EDT 1978 · World Coal; (United States)

OSTI ID:6872016

Sharkov, A M; Aksyonov, V P

Investigations have shown that construction in the Kansk-Achinsk basin of large open pits with a total prospective output capacity in the order of one billion tons of coal per year is a sound economic proposition. The major high-capacity open pit, the construction of which is already in the current Five-Year Plan Period, is Beryosovsky Number 1 Pit. Coal reserves in the basin include horizontal, 40 to 60 meters thick, seams which extend over several kilometers. Sandy-clayey rocky overburden and coals are soft, and have a digging resistance of only 14 kilograms per square centimeter, so they are workable by cyclic, as well as continuous equipment without the need for blasting. Factors which complicate the selection of the means and systems of pit mechanization are: (1) Presence, among overburden rocks, of thin (0.1 to 1.5 meters) and in some cases very hard dirt partings. (2) The region's severe climate. The first and vital issue at this pit is the correct choice of the most economic type of excavating machines. Existing systems all envisage opening the fields at seam outcrop with a subsequent advance of the working force down the dip. The length of the working force is estimated to be 8 to 10 kilometers.

• OSTI ID: 6872016
• Journal Information: World Coal; (United States), Journal Name: World Coal; (United States) Vol. 4:8; ISSN WOCOD
• Country of Publication: United States
• Language: English

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