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Sistem dan Metode Penambangan : Shrinkage Stoping

tugas kuliah
by Anita Rahman on 11 January 2013

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Transcript of Sistem dan Metode Penambangan : Shrinkage Stoping

SHRINKAGE
STOPING Shrinkage Stoping Syarat Operasi Produksi # overhand

# dinding disangga sementara dengan ore yang telah diberai Keuntungan * Modal Rendah

* Recovery Cukup Tinggi ( 75-85 % )

* Dilusi Rendah ( 10 - 20 % )

* Sangat Cocok Untuk Vein < 8 ft Kerugian - mining cost : sedang - cukup tinggi

- kondisi kerja bahaya

- Produktivitas Rendah - Sedang Oleh : Achmad
Munib Rasyidi Anita Rahman Henry Otniel
Saragih pemboran peledakan pemuatan pengangkutan Bentuk & Posisi Mineral Kondisi Geoteknik Ekonomi # dip deposit : cukup curam (>45 ) # kadar : tinggi # keseragaman ore : homogen # bentuk deposit : Vertikal, # kekuatan ore : kuat # kekuatan batuan : cukup kuat # harga mineral # biaya penambangan : sedang - tinggi # kedalaman : dangkal - sedang (<2500 ft atau < 750 m) # ukuran deposit : sempit - sedang ( 3 - 100 ft atau 1 - 30 m) 0 Shrinkage Stoping
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