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All Journal TAMBANG PROMINE KURVATEK Mukaddimah: Jurnal Studi Islam Jurnal Impresi Indonesia International Journal of Hydrological and Environmental for Sustainability Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Journal of Mining Insight
Agung Dwi Sutrisno
Program Studi Teknik Pertambangan, Institut Teknologi Nasional Yogyakarta
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation

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Processing Critical Bond Lenght Berdasarkan Data Aktual Pull Out Test (Cablebolt) pada Area Tambang Bawah Tanah Grasberg Block Cave Di PT.Freeport Indonesia Mofu, Raynata Aprillia; Wijaya, R.Andy Erwin; Sutrisno, Agung Dwi
Jurnal of Mining Insight Vol 1 No 2 (2023): Journal of Mining insight
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jmi.v1i2.152

Abstract

PT. Freeport Indonesia is a company that mines, processes and explores ores containing copper, gold and silver in the highlands of Tembagapura, Mimika Regency, Papua Province with an area of 212,950 hectares. To improve the stability of the opening hole in underground mines, it is necessary to implement  a ground support  system in underground mines, one of which is used in  the Grasberg Block Cave (GBC) area of PT. Freeport Indonesia is a supporting support (Cable bolt). Therefore, it is necessary to further analyze the strength of the critical bond length  of the Cablebolt in the Grasberg Block Cave (GBC) area of the underground mine of PT. Freeport Indonesia. The purpose of this study is (1) to determine the strength of the bond length based on tensile test data, (2) to determine the elastic value of cable bolts. From the results of the tension and strain of the single cable bolt that has been obtained, the Ice Value and the maximum stress of the cable bolt are determined, the data is obtained with a tension value of 10.6263 N/mm2 and a stretch value of 0.00427. After obtaining the stress and tension values of the single cable bolt,  the Es value of the cable bolt with a value of 1403.45 Mpa is sought. From the results of the tension and tension of the twin  cable bolts that have been obtained, the Ice value of the cable bolts is obtained. From the experimental data, a tensile value of 3.8658 N/mm2 and a tensile value of 249.68 were obtained. After obtaining the stress and tension values of the twin cable bolts, the Ice value of the cable bolts with a value of 358.647 Mpa is sought. 
Building Trust for Sustainable Land Rehabilitation: Community Involvement and Management Post-Mining Sutrisno, Agung Dwi; Sumarjono, Erry; Suryawan, I Wayan Koko; Lin, Bih Chuan
International Journal of Hydrological and Environmental for Sustainability Vol. 4 No. 2 (2025): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v4i2.778

Abstract

Post-mining land use sustainability is critical for mitigating environmental degradation and ensuring long-term community benefits. This study identifies gaps in participation and highlights innovative strategies for addressing trust deficits in land management. Through advanced statistical methods such as Structural Equation Modeling (SEM), the research pinpoints the pivotal role of transparency and trust-building in driving community engagement. Additionally, the study explores the implications of global best practices in land rehabilitation and how these can be adapted to local contexts like Pongkor, Bogor Regency. By integrating insights from international case studies, this analysis underscores the need for tailored community outreach programs that align with cultural and socioeconomic dynamics. The findings contribute to broader discussions on sustainable practices and provide actionable recommendations for policymakers to enhance the effectiveness of post-mining rehabilitation efforts.
Analisis Dampak Air Lindi Terhadap Kualitas Air Sumur Di Sekitar Tempat Pembuangan Akhir Tibar, Kabupaten Liquiçá, Timor-Leste Gama, Osvaldo Vong Ximenes; Winarti, Winarti; Dwi Sutrisno, Agung
Jurnal Impresi Indonesia Vol. 4 No. 10 (2025): Indonesian Impression Journal (JII)
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/jii.v4i10.7078

Abstract

Leachate from the Waste Disposal Site (WDS) poses a risk of seeping into the ground and contaminating community well water. This study was conducted to examine the impact of WDS effluent on the water quality of wells in Tibar Village, Liquiçá Regency, Timor-Leste, and to evaluate the correlation between well proximity and the degree of contamination. The research employed a descriptive-analytic methodology with a quantitative approach, involving twelve well sites situated near the WDS. Water quality was assessed through analysis of physical parameters (pH, turbidity, TDS, conductivity, salinity), chemical parameters (ammonia, magnesium, nitrate, nitrite, calcium, manganese), and microbiological parameters (total coliform, Escherichia coli). The test results indicated that several parameters exceeded Timor Leste National Laboratory Agency, including ammonia up to 0.99 mg/L, magnesium at 102.6 mg/L, calcium at 168 mg/L, TDS at 1,384 mg/L, conductivity at 2,710 µS/cm, salinity at 1.40 ppt, and total coliform at 4 MPN/100 mL. Elevated concentrations were predominantly observed in wells located within 500 meters of the WDS, suggesting the infiltration of Leachate into the groundwater. These findings highlight a relationship between the proximity of wells to the WDS and the high levels of contamination, underscoring the need for enhanced waste management practices, regular water quality monitoring, and water source protection policies to safeguard public health.
Peningkatan Pemahaman Mahasiswa Tentang Potensi dan Pengelolaan Tambang di Indonesia Sutrisno, Agung Dwi; Astuti, Meti
Retii 2024: Prosiding Seminar Nasional ReTII ke-19 (Edisi Pengabdian Kepada Masyarakat)
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pengabdian kepada masyarakat ini bertujuan untuk meningkatkan pemahaman mahasiswa mengenai potensi sumber daya tambang di Indonesia serta tantangan dalam pengelolaannya. Kegiatan dilaksanakan melalui penyuluhan kepada mahasiswa Sekolah Tinggi Ekonomi Islam (STEI) Hamfara dengan metode ceramah dan diskusi interaktif. Materi yang disampaikan meliputi potensi tambang Indonesia, peringkat global Indonesia dalam produksi tambang, serta kondisi aktual pengelolaan sektor tambang. Hasil yang dicapai menunjukkan bahwa peserta memiliki pemahaman yang lebih baik tentang potensi sumber daya tambang dan tantangan pengelolaannya. Diskusi juga memunculkan kesadaran akan perlunya kebijakan yang lebih baik untuk memanfaatkan kekayaan tambang demi kesejahteraan rakyat.
Co-Authors A.A Inung Arie Adnyano, A.A Inung Arie Agustinus Isjudarto Akhmad Zamroni Amir Machmud, Amir Anna Sikhatul Kaifiyah Astuti, Meti Bayurohman Pangacella Putra Denanson Ornansah Sinaga Erry Sumarjono Gama, Osvaldo Vong Ximenes Lin, Bih Chuan Meti Astuti Mofu, Raynata Aprillia R. Andy Erwin Wijaya Saputra, Ainul Suryawan, I Wayan Koko Winarti Winarti