Tugas Dan Perhitungan Peledakan Acara 1
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Transcript of Tugas Dan Perhitungan Peledakan Acara 1
TUGAS DAN PERHITUNGAN
PRAKTIKUM TEKNIK PELEDAKAN ACARA I KRITERIA PENGGALIAN
Pembacaan Kecepatan seismic :
BATUBARA ANDESIT MUD STONESAND STONE
811 3773 2086 1048829 3773 2097 1048836 3773 2097 1046851 3773 2101 1048831 3773 2101 1049
831,6 3773 2096,4 1047,8
Berdasarkan Grafik metoda kecepatan seismic untuk penentuan penggalian (Atkinson,1971)
Kesimpulannya adalah :
Batubara,Kec.Seismik rata-rata = 831,6 m/d- Stripping shovel : no blasting = Marginal- Walking dragline : no blasting = Marginal- Dragline (crawler) : no blasting = Impossible- Bucket wheel excavator = Impossible- Bucket chain excavator = Impossible- Loading shovel : no blasting = Rippable- Tractor scrapper : after ripping = Rippable- Tractor scrapper : after ripping and etc = Marginal- Labourer with pick & shovel = Marginal
Andesit,Kec.seismik rata-rata = 3773 m/d- Stripping shovel : no blasting = Impposible- Walking dragline : no blasting = Impossible- Dragline (crawler) : no blasting = Impossible- Bucket wheel excavator = Impossible- Bucket chain excavator = Impossible- Loading shovel : no blasting = Impossible- Tractor scrapper : after ripping = Impossible- Tractor scrapper : after ripping and etc = Impossible- Labourer with pick & shovel = Impossible
Mud Stone,Kec.Seismik rata-rata = 2096,4 m/d- Stripping shovel : no blasting = Impposible- Walking dragline : no blasting = Impossible- Dragline (crawler) : no blasting = Impossible- Bucket wheel excavator = Impossible- Bucket chain excavator = Impossible- Loading shovel : no blasting = Impossible- Tractor scrapper : after ripping = Impossible- Tractor scrapper : after ripping and etc = Impossible- Labourer with pick & shovel = Impossible
Sand Stone,Kec.Seismik rata-rata = 1047,8 m/d- Stripping shovel : no blasting = Marginal- Walking dragline : no blasting = Impossible- Dragline (crawler) : no blasting = Impossible- Bucket wheel excavator = Impossible- Bucket chain excavator = Impossible- Loading shovel : no blasting = Marginal- Tractor scrapper : after ripping = Rippable- Tractor scrapper : after ripping and etc = Marginal- Labourer with pick & shovel = Impossible
Berdasarkan grafik criteria penggaruan dengan D9R,Kesimpulanny adalah :
Batubara,Kec.Seismik rata-rata = 831,6 m/d Coal = Rippable
Andesit,Kec.Seismik rata-rata = 3773 m/d Andesit = Impossible
Mud Stone,Kec.Seismik rata-rata = 2096,4 m/d Mud Stone = Rippable
Sand Stone,Kec.Seismik rata-rata = 1047,8 m/d
Sand Stone = Rippable
Perhitungan Point Load Index
Batubara
Is = F. P
De² = 0,452 . 30 6,14² = 0,3596 . 0,1 = 0,03596 Mpa
F = D0,45
5 = 6,1400,45
5 = 0,452
RQD = 100 e -0,1 (λ) ( 0,1 (λ) + 1 ) = 100 e
Andesit
Is = F. P
De²
= 0,390 . 800 4,42² = 15,97 . 0,1 = 1,59 Mpa
F = D0,45
5 = 4,420,45
5 = 0,390
Mud Stone
Is = F. P
De²
= 0,4526 . 50 6,14² = 0,60 . 0,1 = 0,06 Mpa
F = D0,45
5 = 6,140,45
5 = 0,4526
Sand Stone
Is = F. P
De²
= 0,4516 . 70 6,11² = 0,847 . 0,1 = 0,0847 Mpa
F = D0,45
5 = 6,110,45
5 = 0,4516
Berdasarkan grafik criteria penggalian menurut kolleth (1990), Kesimpulannya adalah :
Perhitungan UCS ( Uniaxial Compressive Strength – Mpa )
Batubara
Is = 0,00000101 Mpa
UCS = 0,00000101 Mpa . 23 = 0,0000233 Mpa
Penggaliannya dapat menggunakan :- Dragline,Shovel,Backhoe- Scraper- Surface Miner- Bucket Wheel Excavator
Andesit
Is = 0,0000450 Mpa
UCS = 0,0000450 Mpa . 23 = 0,001035 Mpa
Penggaliannya dapat menggunakan :- Dragline,Shovel,Backhoe- Scraper- Surface Miner- Bucket Wheel Excavator
Mud Stone
Is = 0,0000168 Mpa
UCS = 0,0000168 Mpa . 23 = 0,0000387 Mpa
Penggaliannya dapat menggunakan :- Dragline,Shovel,Backhoe- Scraper- Surface Miner- Bucket Wheel Excavator
Sand Stone
Is = 0,000002385 Mpa
UCS = 0,000002385 Mpa . 23 = 0,0000548 Mpa
Penggaliannya dapat menggunakan :- Dragline,Shovel,Backhoe- Scraper- Surface Miner- Bucket Wheel Excavator