SLOPE STABILITY ANALYSIS FOR PT ABC'S QUARTZ SAND MINE ULTIMATE PIT LIMIT, BANGKA BELITUNG

SLOPE STABILITY ANALYSIS FOR PT ABC'S QUARTZ SAND MINE ULTIMATE PIT LIMIT, BANGKA BELITUNG

PT ABC is a tin mining company located in the Bangka Belitung Islands. In order to optimize resources, PT ABC is also planning to utilize the leftover processing materials, which have been traditionally backfilled, as backfill materials, namely quartz sand. This is done to increase added value in...

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Main Author: Nabila, Lubna
Format: Final Project
Language:Indonesia
Online Access:https://digilib.itb.ac.id/gdl/view/76981
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Institution: Institut Teknologi Bandung
Language: Indonesia
id id-itb.:76981
spelling id-itb.:769812023-08-21T12:05:51ZSLOPE STABILITY ANALYSIS FOR PT ABC'S QUARTZ SAND MINE ULTIMATE PIT LIMIT, BANGKA BELITUNG Nabila, Lubna Indonesia Final Project PT ABC merupakan perusahaan pertambangan timah yang terletak di Kepulauan Bangka Belitung. Dalam rangka melakukan optimalisasi sumber daya, PT ABC juga berencana memanfaatkan material sisa hasil pengolahan yang selama ini ditimbun kembali sebagai material backfill yaitu pasir kuarsa. Hal tersebut dilakukan untuk meningkatkan nilai tambah sesuai dengan Peraturan Menteri Energi dan Sumber Daya Mineral (Permen ESDM) Nomor 25 Tahun 2018. Parameter geoteknik menjadi hal yang krusial dalam menunjang operasi penambangan pasir kuarsa tersebut sehingga diperlukan analisis kestabilan lereng agar sesuai dengan Keputusan Menteri Energi dan Sumber daya Mineral Nomor 1827K/30/MEM/2018. Analisis kestabilan lereng dilakukan pada desain ultimate pit limit dengan menggunakan metode kesetimbangan batas Bishop dan asumsi longsoran sirkular dengan menggunakan perangkat lunak Slide 6.0. Parameter analisis kestabilan lereng tersebut dilakukan dengan nilai Hu sebesar 0,8 serta pembebanan seismik sebesar 0,01g. Hasil analisis menunjukkan bahwa seluruh lereng pada Blok L, B, S, T dan M tergolong aman karena memenuhi nilai minimal faktor keamanan lereng. Nilai FK statis berada pada rentang 1,21 – 2,43 sedangkan FK dinamis berada pada rentang 1,17 – 2,3. Rekomendasi sudut lereng tunggal dihasilkan dari grafik Hoek and Bray Chart no. 4. Berdasarkan analisis yang telah dilakukan, diperoleh rekomendasi lereng tunggal untuk Blok L, B, S, T dan M adalah tinggi 5 m, dengan kemiringan antara 35° - 60°. Hasil analisis menunjukkan bahwa untuk setiap kondisi lereng, nilai faktor keamanan telah memenuhi ketentuan sesuai dengan Keputusan Menteri Energi dan Sumber Daya Mineral Nomor 1827K/30/MEM/2018. Oleh karena itu, tambang pasir kuarsa PT ABC yang berlokasi di Kepulauan Bangka Belitung dapat beroperasi dengan aman hingga akhir masa tambang (LOM) berdasarkan aspek geoteknik. INSTITUT TEKNOLOGI BANDUNG https://digilib.itb.ac.id/gdl/view/76981 PT ABC is a tin mining company located in the Bangka Belitung Islands. In order to optimize resources, PT ABC is also planning to utilize the leftover processing materials, which have been traditionally backfilled, as backfill materials, namely quartz sand. This is done to increase added value in accordance with the Regulation of the Minister of Energy and Mineral Resources (Permen ESDM) Number 25 of 2018. Geotechnical parameters are crucial in supporting the quartz sand mining operation, hence slope stability analysis is required to comply with the Minister of Energy and Mineral Resources Decree Number 1827K/30/MEM/2018. Slope stability analysis is conducted on the ultimate pit limit design using the Bishop's Limit Equilibrium method and assuming circular failures using Slide 6.0 software. The geotechnical parameters for slope stability analysis are carried out with a Hu value of 0.8 and seismic loading of 0.01g. The analysis results indicate that all slopes in L, B, S, T, and M Blocks are considered safe as they meet the minimum values for slope safety factor. The static safety factor (FK static) ranges from 1.21 to 2.43, while the dynamic safety factor (FK dinamic) ranges from 1.17 to 2.3. The recommended single slope angle is derived from Hoek and Bray Chart no. 4. Based on the conducted analysis, a recommended single slope for L, B, S, T, and M Block is 5 m high, with a slope inclination between 35° - 60°. The analysis shows that for every slope condition, the safety factor values have met the requirements as stated in the Minister of Energy and Mineral Resources Decree Number 1827K/30/MEM/2018. Therefore, PT ABC's quartz sand mine located in the Bangka Belitung Islands can operate safely until the end of the life of mine (LOM) based on geotechnical aspects. text
institution Institut Teknologi Bandung
building Institut Teknologi Bandung Library
continent Asia
country Indonesia
Indonesia
content_provider Institut Teknologi Bandung
collection Digital ITB
language Indonesia
description PT ABC is a tin mining company located in the Bangka Belitung Islands. In order to optimize resources, PT ABC is also planning to utilize the leftover processing materials, which have been traditionally backfilled, as backfill materials, namely quartz sand. This is done to increase added value in accordance with the Regulation of the Minister of Energy and Mineral Resources (Permen ESDM) Number 25 of 2018. Geotechnical parameters are crucial in supporting the quartz sand mining operation, hence slope stability analysis is required to comply with the Minister of Energy and Mineral Resources Decree Number 1827K/30/MEM/2018. Slope stability analysis is conducted on the ultimate pit limit design using the Bishop's Limit Equilibrium method and assuming circular failures using Slide 6.0 software. The geotechnical parameters for slope stability analysis are carried out with a Hu value of 0.8 and seismic loading of 0.01g. The analysis results indicate that all slopes in L, B, S, T, and M Blocks are considered safe as they meet the minimum values for slope safety factor. The static safety factor (FK static) ranges from 1.21 to 2.43, while the dynamic safety factor (FK dinamic) ranges from 1.17 to 2.3. The recommended single slope angle is derived from Hoek and Bray Chart no. 4. Based on the conducted analysis, a recommended single slope for L, B, S, T, and M Block is 5 m high, with a slope inclination between 35° - 60°. The analysis shows that for every slope condition, the safety factor values have met the requirements as stated in the Minister of Energy and Mineral Resources Decree Number 1827K/30/MEM/2018. Therefore, PT ABC's quartz sand mine located in the Bangka Belitung Islands can operate safely until the end of the life of mine (LOM) based on geotechnical aspects.
format Final Project
author Nabila, Lubna
spellingShingle Nabila, Lubna
SLOPE STABILITY ANALYSIS FOR PT ABC'S QUARTZ SAND MINE ULTIMATE PIT LIMIT, BANGKA BELITUNG
author_facet Nabila, Lubna
author_sort Nabila, Lubna
title SLOPE STABILITY ANALYSIS FOR PT ABC'S QUARTZ SAND MINE ULTIMATE PIT LIMIT, BANGKA BELITUNG
title_short SLOPE STABILITY ANALYSIS FOR PT ABC'S QUARTZ SAND MINE ULTIMATE PIT LIMIT, BANGKA BELITUNG
title_full SLOPE STABILITY ANALYSIS FOR PT ABC'S QUARTZ SAND MINE ULTIMATE PIT LIMIT, BANGKA BELITUNG
title_fullStr SLOPE STABILITY ANALYSIS FOR PT ABC'S QUARTZ SAND MINE ULTIMATE PIT LIMIT, BANGKA BELITUNG
title_full_unstemmed SLOPE STABILITY ANALYSIS FOR PT ABC'S QUARTZ SAND MINE ULTIMATE PIT LIMIT, BANGKA BELITUNG
title_sort slope stability analysis for pt abc's quartz sand mine ultimate pit limit, bangka belitung
url https://digilib.itb.ac.id/gdl/view/76981
_version_ 1822995147783143424

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