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All Journal Jurnal Teknologi Mineral dan Batubara Jurnal Geomine Indonesian Mining Journal Buletin Sumber Daya Geologi INDONESIAN MINING PROFESSIONALS JOURNAL Current Research on Biosciences and Biotechnology Jurnal Teknologi Mineral dan Batubara
Ridho Kresna Wattimena
Institut Teknologi Bandung
Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Energy Engineering Environmental Science Materials Science & Nanotechnology Medicine & Pharmacology

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Journal : INDONESIAN MINING PROFESSIONALS JOURNAL

 1 
Stability Analysis of the Nanjung Water Diversion Twin Tunnels based on Convergence Measurement Simon Heru Prassetyo; Ganda Marihot Simangunsong; Ridho Kresna Wattimena; Made Astawa Rai; Irwandy Arif; Nuhindro Priagung Widodo; Dhika Noor Pradhana; Dimas Agung Saputra
Indonesian Mining Professionals Journal Vol 1, No 1 (2019): NOVEMBER
Publisher : PERHAPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36986/impj.v1i1.11

Abstract

This paper focuses on the stability analysis of the Nanjung Water Diversion Twin Tunnels using convergence measurement. The Nanjung Tunnel is horseshoe-shaped in cross-section, 10.2 m x 9.2 m in dimension, and 230 m in length. The location of the tunnel is in Curug Jompong, Margaasih Subdistrict, Bandung. Convergence monitoring was done for 144 days between February 18 and July 11, 2019. The results of the convergence measurement were recorded and plotted into the curves of convergence vs. day and convergence vs. distance from tunnel face. From these plots, the continuity of the convergence and the convergence rate in the tunnel roof and wall were then analyzed. The convergence rates from each tunnel were also compared to empirical values to determine the level of tunnel stability. In general, the trend of convergence rate shows that the Nanjung Tunnel is stable without any indication of instability. Although there was a spike in the convergence rate at several STA in the measured span, that spike was not replicated by the convergence rate in the other measured spans and it was not continuous. The stability of the Nanjung Tunnel is also confirmed from the critical strain analysis, in which most of the STA measured have strain magnitudes located below the critical strain line and are less than 1%.
PENERAPAN METODE STATISTIKA DALAM ANALISIS KEMANTAPAN LERENG TAMBANG DI INDONESIA Ridho Kresna Wattimena; Masagus Ahmad Azizi; Singgih Saptono
Indonesian Mining Professionals Journal Vol 4, No 1 (2022): April
Publisher : PERHAPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36986/impj.v4i1.58

Abstract

 Perkembangan penerapan metode statistika dalam analisis kemantapan lereng tambang di Indonesia sudah berjalan secara cukup lengkap lebih dari 1 dekade. Penerapan tersebut ditujukan untuk  mengatasi variasi parameter pembentuk lereng maupun beban pada lereng. Tulisan ini mengulas mengenai penerapan metode statistika dalam analisis analisis kemantapan lereng di Indonesia, yang diawali dengan penentuan fungsi distribusi dan penerapannya dalam analisis kemantapan lereng, perhitungan FK dan PK, serta pengembangan kurva kestabilan lereng ABSTRACT Abstract should be written of maximum 200 words in 1 (one) alinea or paragraph, in English, in italics with Arial Narrow  points-9 within 1 space of each line.  Content of the Abstract should be clear, descriptive, providing a brief overview of the problem studied. including purpose, method of the research, brief overview 
Co-Authors Abdurrokhim ⠀ Adjat Sudradjat Awang Suwandhi Azizi, Masagus Ahmad Dhika Noor Pradhana Dimas Agung Saputra Ganda Marihot Simangunsong Habibie Anwar Ildrem Sjafri Ildrem Syafri Intan Nurul Rizki Irwandy Arif Made Astawa Rai Made Astawa Rai Mega Fatimah Rosana Mega Fatimah Rosana Nuhindro Priagung Widodo Ridwan Syarif Simon Heru Prassetyo Singgih Saptono, Singgih SITI KHODIJAH CHAERUN Suwandhi, Awang ZULFAHMI ZULFAHMI Zulfahmi Zulfahmi