CD Skripsi
Rancangan Lereng Tambang Batubara Terbuka Menggunakan Beban Dinamis
ABSTRACT
Coal is a source of fuel for electricity generation. Nationally, the demand for coal
is 83 million tonnes in 2019. The opening of a new mine in Bangko Tengah
Surban Jeriji, Muara Enim, South Sumatra in order to meet national coal
consumption needs requires careful planning. The excavated slopes must be made
safe and economical, so that mining activities can run smoothly. The purpose of
this study was to analyze single slopes, inter-ramp slopes, overall slopes and
stripping ratio values. Analysis of each slope using the Geoslope 2018 program
with the Slope / W sub-program. Single slope analysis uses 2 variations, slopes
with varying heights of 9 m, 12 m, 15 m and 18 m and slopes with slope ratios for
the respective heights of 1: 2, 1: 1, 1: 0.75 and 1: 0, 5. The magnitude of the
earthquake coefficient due to dynamic loads and detonation is 0.03. The results of
single slope analysis were obtained, 18 m height single slope 1: 0.75 and FK
1.606 for overburden layer D, single slope height 15 m with a slope of 1: 0.5 FK
2.045 for seam layer D, slopes with 18 m high slope 1: 1 and FK 1.397 for the DE
interburden layer, on the E seam layer a single slope with a height of 18 m with a
slope of 1: 0.75 and FK 1.333, a single slope height of 18 m for a 1: 1 slope and
FK 1.396 for the E overburden layer. FK for the overall slope is 1.124 with a
height of 200 m and a slope of 15o, the stripping ratio value obtained is 9.85.
Keywords: Stability, Coal, Dynamic Load, Open Mine
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