Wahyudi, Ilham (2025) PENGARUH DINAMIKA PENGENDAPAN TERHADAP KUALITAS BATUBARA SEAM B2 PIT “HAMDI” FORMASI BALIKPAPAN, KECAMATAN SANGATTA UTARA, KABUPATEN KUTAI TIMUR, PROVINSI KALIMANTAN TIMUR. Skripsi thesis, UPN Veteran Yogyakarta.
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Abstract
SARI
PENGARUH DINAMIKA PENGENDAPAN TERHADAP
KUALITAS BATUBARA SEAM B2 PIT “HAMDI” FORMASI
BALIKPAPAN, KECAMATAN SANGATTA UTARA,
KABUPATEN KUTAI TIMUR, PROVINSI KALIMANTAN
TIMUR
Oleh
Ilham Wahyudi
NIM: 111210068
(Program Studi Sarjana Teknik Geologi)
Dalam sektor industri, batubara dimanfaatkan sebagai sumber energi utama,
khususnya sebagai bahan bakar, sehingga diperlukan batubara dengan kualitas yang
baik, yaitu batubara yang memiliki nilai kalor yang tinggi serta nilai kandungan abu
dan total sulfur yang rendah agar proses industri dapat berjalan secara efektif dan
efisien. Penelitian ini bertujuan untuk memahami kondisi geologi terkait dengan
lingkungan dan dinamika pengendapan batubara seam B2 serta kaitannya dengan
kualitas batubara seam B2. Daerah penelitian memiliki luas ± 1.3 x 1.3 km2 dengan
total 9 sumur yang dianalisis dan berada di Daerah Sangatta, Kalimantan Timur.
Metode yang digunakan yaitu pemetaan geologi permukaan yang termasuk
didalamnya pembuatan penampang stratigrafi terukur guna mengetahui fasies dan
lingkungan pengendapan yang didukung dengan hasil korelasi sumur bor.
Kemudian juga dilakukan analisis proksimat dan ultimat serta analisis nilai kalor
dan perhitungan kualitas batubara berdasarkan peringkat batubara. Daerah
penelitian disusun oleh satuan batulempung Balikpapan dan satuan endapan aluvial.
Seam B2 memiliki kualitas rata-rata kadar abu 2.1 % (adb), total sulfur 0.5 % (adb),
dan nilai kalor 6826.8 kkal/kg (adb) dengan peringkat High Volatile C Bituminous.
Hasil dari penelitian ini didapatkan bahwa nilai kalor, kadar abu, dan total sulfur
seam B2 lebih rendah dibandingkan seam BN. Pengaruh tekanan, panas, dan umur
mengakibatkan nilai kalor seam B2 lebih rendah jika dibandingkan dengan seam
BN. Kadar abu yang lebih tinggi pada seam BN disebabkan pada saat pembentukan
batubara dipengaruhi oleh material lempung hingga pasir yang diendapkan selama
rawa tergenang akibat air pasang surut, sehingga kandungan anorganiknya lebih
tinggi dibandingakan seam B2. Nilai total sulfur yang tinggi pada seam BN
diakibatkan karena lapisan pengapit bagian atasnya diendapkan pada fasies
interdistributary bay yang dipengaruhi oleh air laut.
Kata kunci: Batubara, Dinamika pengendapan, Kualitas batubara, Lingkungan
pengendapan
vii
ABSTRACT
THE INFLUENCE OF DEPOSITIONAL DYNAMICS ON COAL
QUALITY OF SEAM B2 “HAMDI” PIT, BALIKPAPAN
FORMATION, NORTH SANGATTA SUB-DISTRICT, EAST
KUTAI DISTRICT, EAST KALIMANTAN PROVINCE
By
Ilham Wahyudi
NIM: 111210068
(Geological Engineering Undergraduate Program)
In the industrial sector, coal is used as the main source of energy, particularly as
fuel, so high-quality coal is required, namely coal with high calorific value and low
ash and total sulfur content, to ensure that industrial processes run effectively and
efficiently. This study aims to understand the geological conditions related to the
environment and the dynamics of coal deposition in seam B2, as well as its
relationship with the quality of coal in seam B2. The study area covers an area of
approximately 1.3 x 1.3 km2 with a total of 9 wells analyzed, located in the Sangatta
area, East Kalimantan. The methods used include surface geological mapping,
which includes the creation of measured stratigraphic sections to determine the
facies and depositional environment, supported by well correlation results.
Proximate and ultimate analyses, as well as calorific value analyses and coal
quality calculations based on coal rankings, were also conducted. The study area
is composed of the Balikpapan claystone unit and the alluvial deposit unit. Seam
B2 has an average ash content of 2.1% (adb), total sulfur of 0.5% (adb), and a
calorific value of 6826.8 kcal/kg (adb), classified as High Volatile C Bituminous.
The results of this study indicate that the calorific value, ash content, and total
sulfur content in layer B2 are lower than those in layer BN. The effects of pressure,
heat, and age cause the calorific value of layer B2 to be lower than that of layer
BN. The higher ash content in layer BN is attributed to the influence of clay and
sand materials that were deposited during coal formation in flooded swamps due
to tidal fluctuations, resulting in higher inorganic content compared to layer B2.
The high total sulfur content in the BN layer is associated with the upper layer
deposited in the interdistributary bay facies influenced by seawater.
Keywords: Coal, Depositional dynamics, Coal quality, Depositional environment
viii
| Item Type: | Tugas Akhir (Skripsi) |
|---|---|
| Uncontrolled Keywords: | Batubara, Dinamika pengendapan, Kualitas batubara, Lingkungan pengendapan |
| Subjek: | Q Science > QE Geology |
| Divisions: | Fakultas Teknologi Mineral dan Energi > (S1) Teknik Geologi |
| Depositing User: | Eko Yuli |
| Date Deposited: | 28 Nov 2025 03:08 |
| Last Modified: | 28 Nov 2025 03:08 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/45887 |
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