DAFTAR ISI
Halaman KATA PENGANTAR ....................................................................................
iv
DAFTAR ISI ...................................................................................................
vi
DAFTAR GAMBAR ......................................................................................
viii
DAFTAR TABEL ..........................................................................................
ix
DAFTAR LAMPIRAN ..................................................................................
xi
Bab I
II
PENDAHULUAN...............................................................................
1
1.1 1.2 1.3 1.4 1.5 1.6
Latar Belakang Masalah ........................................................... Tujuan Penelitian ..................................................................... Identifikasi Masalah ................................................................. Batasan Masalah....................................................................... Metodologi Penelitian .............................................................. Hasil yang Diharapkan .............................................................
1 1 2 2 2 3
TINJAUAN UMUM ...........................................................................
4
2.1 2.2 2.3 2.4 2.5 2.6 2.7 III
IV
Lokasi dan Kesampaian Daerah ............................................... Iklim dan Curah Hujan ............................................................. Tinjauan geologi....................................................................... Sifat Fisik dan Kimia Batugamping ......................................... Target Produksi ........................................................................ Kegiatan Penambangan Batugamping ..................................... Kegiatan Peremukan dan Penimbunan.....................................
4 6 6 9 10 10 13
DASAR TEORI ..................................................................................
15
3.1 3.2 3.3 3.4
15 23 24 25
Faktor-Faktor yang Mempengaruhi produksi .......................... Kemampuan Produksi Alat Mekanis ....................................... Jumlah Kebutuhan Alat..........................................……………. Keserasian Kerja Alat Mekanis (Match Factor) ......................
KEMAMPUAN PRODUKSI ALAT MEKANIS ...................... .....
27
4.1 4.2 4.3 4.4 4.5
27 29 29 29 30
Tinjauan Terhadap Keadaan Lokasi Penambangan ................. Bobot Isi Lepas Batugamping .................................................. Faktor pengisian Bucket ........................................................... Waktu Edar Alat Mekanis (Cycle Time) ................................. Efisiensi Kerja .......................................................................... vii
4.6 4.7 V
Produksi Alat Mekanis ............................................................. Keserasian Alat Kerja (Match Factor) .....................................
33 34
PEMBAHASAN .................................................................................
35
5.1
Pengaruh Kondisi Lapangan Terhadap Peningkatan Produksi ............................................... Peningkatan Waktu Kerja Efektif ............................................ Penambahan Jumlah Alat Angkut ............................................ Evaluasi Teknis Kebutuhan Alat Muat Dan Alat Angkut .... Match Factor Setelah Penambahan Jumlah Alat Angkut ........
35 36 38 38 39
KESIMPULAN DAN SARAN ..........................................................
40
6.1 6.2
Kesimpulan .............................................................................. Saran .........................................................................................
40 41
DAFTAR PUSTAKA .....................................................................................
42
LAMPIRAN ....................................................................................................
43
5.2 5.3 5.4 5.5 VI
xii
DAFTAR GAMBAR
Gambar 2.1
Halaman
Peta Lokasi PT. Indocement Tunggal Prakarsa Tbk. Palimanan-Cirebon...............................................................................
5
2.2
Stratigrafi Gunung Kromong ...............................................................
8
2.3
Peta Struktur Gunung Kromong ..........................................................
9
2.4
Alat Muat Pada Penambangan Batugamping .......................................
12
2.5
Alat Angkut Pada Penambangan Batugamping ...................................
13
2.6
Urutan Kegiatan Penambangan Batugamping di PT. Indocement Tunggal Prakarsa Tbk. Palimanan-Cirebon...............
14
3.1
Lebar Minimum Jalan Lurus untuk Alat Angkut .................................
20
3.2
Lebar Jalan Angkut Pada Tikungan .....................................................
20
3.3
Jari-jari Tikungan Jalan Angkut ...........................................................
22
3.4
Gaya Sentrifugal...................................................................................
23
3.5
Grafik Hubungan Antara Faktor keserasian dan Faktor Kerja Alat .....
26
B.1
Tampak samping tumpukan material Limestone ..................................
48
B.2
Tampak atas tumpukan material Limestone .........................................
48
D.1
Dump Truck Caterpillar 769C Tahun 1996 ..........................................
50
E.1
Wheel Loader Caterpillar 988F Tahun 1996 ........................................
52
F.1
Spesifikasi Bulldozer ............................................................................
54
xii
DAFTAR TABEL
Tabel 2.1
Halaman Komposisi Kimia Batugampimg PT. Indocement Tunggal Prakarsa Tbk. Palimanan-Cirebon...............
10
Geometri Peledakan PT. Indocement Tunggal Prakarsa Tbk. Palimanan-Cirebon...............
12
4.1
Jarak dan Kemiringan Jalan Kuari A ...................................................
28
4.2
Waktu Edar Alat ...................................................................................
29
4.3
Waktu Hambatan Dapat Dihindari .......................................................
32
4.4
Waktu Hambatan Tidak Dapat Dihindari ............................................
32
4.5
Produksi alat muat (wheel loader) ......................................................
33
4.6
Produksi alat angkut (Dump Truck) ....................................................
33
4.7
Kesrasian Kerja Alat (Match Factor) .................................................
34
5.1
Hambatan pada alat mekanis yang dapat dihindari sebelum dan sesudah penekanan ..........................................................
37
5.2
Efisiensi kerja alat mekanis..................................................................
37
A.1
Data Curah Hujan di Kecamatan Plumbon Kabupaten Cirebon Tahun 2000-2009 .................................................................................
43
Data Hari Hujan di Kecamatan Plumbon Kabupaten Cirebon Tahun 2000-2009 .................................................................................
43
B.1
Faktor Pengisian Mangkuk Wheel Loader CAT 988F Kuari A ...........
46
B.2
Faktor Pengisian Mangkuk Wheel Loader CAT 988F Kuari C ...........
47
G.1
Jarak Dan Kemiringan Jalan Kuari A ..................................................
58
G.2
Jarak Dan Kemiringan Jalan Kuari C ..................................................
59
G.3
Angka Superelevasi yang Direkomendasikan (m/m)...........................
60
H.1
Waktu Hambatan Dapat Dihindari .......................................................
61
H.2
Waktu Hambatan Tidak Dapat Dihindari ............................................
61
I.1
Waktu Edar Wheel Loader CAT 988F Kuari A ...................................
63
I.2
Perhitungan Statistik Wheel Loader 988F Kuari A..............................
64
2.2
A.2
xii
I.3
Waktu Edar Wheel Loader CAT 988F Kuari C ...................................
65
I.4
Perhitungan Statistik Wheel Loader 988F Kuari C ..............................
66
J.1
Waktu Edar Dump Truck CAT 769C Kuari A Untuk Crusher P-9 ....
67
J.2
Perhitungan Statistik Dump Truck .......................................................
68
J.3
Waktu Edar Dump Truck CAT 769C Kuari A Untuk Crusher P-10 ..
69
J.4
Perhitungan Statistik Dump Truck .......................................................
70
J.5
Waktu Edar Dump Truck CAT 769C Kuari C Untuk Crusher P-9 ....
71
J.6
Perhitungan Statistik Dump Truck .......................................................
72
J.7
Waktu Edar Dump Truck CAT 769C Kuari C Untuk Crusher P-10 ..
73
J.8
Perhitungan Statistik Dump Truck .......................................................
74
xii
DAFTAR LAMPIRAN
Lampiran
Halaman
A
DATA CURAH HUJAN DAN HARI HUJAN ...................................
43
B
FAKTOR PENGISIAN MANGKUK WHEEL LOADER ...................
45
C
PERHITUNGAN FAKTOR PENGEMBANGAN BATUGAMPING
49
D
SPESIFIKASI ALAT ANGKUT .........................................................
50
E
SPESIFIKASI ALAT MUAT ..............................................................
52
F
SPESIFIKASI ALAT BULLDOZER ..................................................
54
G
PERHITUNGAN JALAN ANGKUT ..................................................
60
H
WAKTU KERJA EFEKTIF ................................................................
61
I
WAKTU EDAR WHEEL LOADER CAT 988F ..................................
63
J
WAKTU EDAR DUMP TRUCK CAT 769C ......................................
67
K
MATCH FACTOR ................................................................................
75
L
PRODUKSI NYATA ALAT MUAT DAN ALAT ANGKUT ...........
80
M
PERHITUNGAN JUMLAH KEBUTUHAN ALAT MUAT DAN ALAT ANGKUT .....................
83
MATCH FACTOR SETELAH PENAMBAHAN ALAT ANGKUT ....................................................
85
N
xii
