Geotechnical comparative analysis of quarry A and quarry D at PT Indocement Prakarsa Tbk, Palimanan–Cirebon Unit
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Abstract
The limestone mining industry plays a strategic role in supporting infrastructure development in Indonesia. PT Indocement Tunggal Prakarsa Tbk, Palimanan-Cirebon Unit, is one of the leading companies engaged in limestone mining using the quarry method. This study aims to analyze the geotechnical conditions and slope stability of Quarry A and Quarry D through a qualitative descriptive-inductive approach. Data were obtained through geotechnical mapping, scanline measurements, rock mass classification using the RMR method, as well as stereographic analysis and slope safety factor (SF) calculations. The results show that both quarries have generally good rock quality, with RMR values ranging from 60–75 and safety factor values mostly above 1.0, indicating relatively stable slope conditions. Identified potential failure types include wedge and planar failures. A comparison between the two sites shows that Quarry A tends to have slightly better rock quality than Quarry D. The study recommends routine slope monitoring, additional scanline measurements in vulnerable areas, and enhanced safety education for mining workers.
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References
Azzahra, C. (2023). Analisis Faktor Keamanan Kuari D di PT. Indocement Tunggal Prakarsan TBK Desa Palimanan, Kecamatan Gempol, Kabupaten Cirebon, Provinsi Jawa Barat. Bandung Conference Series: Mining Engineering, 3(2), 349–359.
Google Earth. (n.d.). Google Earth, maps.
Keputusan Menteri ESDM Nomor 1827 K 30 MEM 2018, (2018).
Minyak.up45.ac.id. (n.d.). No Title.
petatematikindo.wordpress.com. (n.d.). Peta jawa barat.
Prof. Dr. Ir. Irwandy Arif, M. S. (n.d.). majalah_geoteknik_tambang_1643250332.pdf.
Ririn, Budhi, K. (n.d.). Analisis Kestabilan Lereng Pada Tambang Quarry Di Pt . Total Optimal Prakarsa ( TOP ), Desa.
Saputra, I. R., & Widianti, A. (2024). Analisis Kestabilan Lereng Dengan Metode Rock Mass Rating Pada Tambang Batubara ( Studi Kasus Di Kecamatan Damai , Kutai Barat , Kalimantan Timur). 18(April), 40–45.
Tim Unisba Geoteknik. (2019). geoteknik.
Tuerah, E., Sompie, O. B. A., Rondonuwu, S. G., Studi, P., Sipil, T., Universitas, P., Ratulangi, S., Tenggara, K. M., Masalah, R., & Masalah, B. (2021). Analisis geoteknik lokasi bekas tambang nmr ratatotok terhadap potensi likuifaksi. 11(1), 1–6.