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A OPEN PIT MINING AÇIK OCAK MADENCİLİĞİ

A OPEN PIT MINING AÇIK OCAK MADENCİLİĞİ

A OPEN PIT MINING AÇIK OCAK MADENCİLİĞİ

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Landfill<br />

MP 4<br />

Transport route<br />

MP 7<br />

Open pit Grivice<br />

Figure 1. Surface mining "Grivice" RMU " (Google)<br />

Surface mining "Grivice" is characteristic for<br />

being the most developed in the vicinity of<br />

settlement <br />

a route transport to the overburden dump.<br />

This open pit excavates brown coal, with a<br />

thickness of 18 m and barren layers above it<br />

thickness from 50 to 150 m. Open pit<br />

"Grivice" is generally characterized by solid<br />

supporting walls made of gray, dark<br />

limestone and marl, occasionally with blue<br />

and gray-green marly clay interbeds overlaid<br />

and tan or green clay in the basement. Rock<br />

and coalis minied, and the excavators,<br />

hydraulic and conventional (shovels and<br />

dredges) load on trucks. Trucks are "Terex",<br />

capacity 154 tons, "Lectra Haul", capacity<br />

120 tons and "BELAZ", capacity 136 tons,<br />

and the transport is carried out during the day<br />

(24 h). The total coal reserves in PK<br />

"Grivice" are estimated at over 20 million<br />

tons of raw coal. Current capacity of the pit<br />

to 1 000 000 tonnes per year. The landfill is<br />

at 1 000 m from the crater pit (Figure 2).<br />

188

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