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All Journal Indonesian Mining Journal KURVATEK Indonesian Mining Journal
Dahono Haryanto
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Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Social Sciences

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EVALUASI SALURAN TERBUKA ENGAN MENGGUNAKAN DISTRIBUSI GUMBELL DAN MODEL THOMAS FIERING Tedy Agung Cahyadi; Deka Citra Dinata; Dahono Haryanto; Hartono; Indun Titisariwati; Rendy Fahlevi
KURVATEK Vol 5 No 1 (2020): April 2020
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v5i1.1570

Abstract

ABSTRAK Nilai curah hujan yang akan terjadi tidak dapat ditentukan secara pasti dan tepat, akan tetapi dapat diperkirakan atau diprediksi. Tujuan dari penyusunan makalah ini adalah untuk membandingkan hasil pembangkitan data curah hujan menggunakan distribusi Gumbell dan model Thomas Fiering untuk selanjutnya menjadi acuan dalam pengolahan data desain saluran terbuka di tambang. Data yang digunakan selama Sembilan tahun (2009-2017), berasal dari data curah hujan milik Pusat Sumber Daya Air (PSDA) Provinsi Sumatera Barat. Dari hasil penelitian didapat nilai curah hujan hasil distirbusi Gumbell sebesar 138,97 mm/hari sedangkan nilai curah hujan berdasarkan perhitungan model Thomas Fiering sebesar 103,4 mm/hari. Dari hasil tersebut disimpulkan bahwa distribusi Gumbell digunakan untuk menjadi data acuan dalam mendesain saluran terbuka. Kata kunci: Curah Hujan, Distribusi Gumbell, Model Thomas Fiering, Saluran Terbuka
PENILAIAN PERBANDINGAN KESTABILAN LERENG BATUAN MENGGUNAKAN GENERALIZED ANISOTROPIC DAN JOINT NETWORK Akbar, Wahyu Nusantara; Barlian Dwinagara; Singgih Saptono; Dahono Haryanto; Shofa Rijalul Haq; Bagus Wiyono; Oktarian Wisnu Lusantono
Indonesian Mining Journal Vol 28 No 1 (2025): Indoneisan Mining Journal, April 2025
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol28.No1.2025.1548

Abstract

Rock slope stability analysis in a geotechnical study is an important issue in mining engineering. Kinematic analysis is a well-known method to determine potential failures of the rock slope based on structural orientations, but it sometimes disregards the structural properties information. Structural properties are often known as the highly interpreted domains in rock slope engineering; thus, simplification was made for the analysis. Simplification may lead to vague conditions of analysis and reduce its accuracy. Therefore, the aims of this research is to assess the effect of rock structure properties such as heterogeneity, discontinuity, and anisotropic properties of the rock mass. The assessment conducted using the limit-equilibrium method employed the Generalized Anisotropic (GA) material model were compared with finite element method (FEM) using the shear strength reduction (SSR) method employing the joint network rock mass model. The analysis results show that an actual rock slope with a generalized anisotropic material model in the LEM analysis and joint network material model in the FEM analysis is stable with Safety Factor > 1, and the maximum strain model is less than the minimum strain threshold (maximum strain < 0.1). Combining rock slope stability analysis methods aims to produce accurate and representative results regarding the rock mass' condition. This research improves the interpretation of rock slope stability analyses, resulting in a more accurate estimation of the factor of safety (FOS).
PENILAIAN PERBANDINGAN KESTABILAN LERENG BATUAN MENGGUNAKAN GENERALIZED ANISOTROPIC DAN JOINT NETWORK Akbar, Wahyu Nusantara; Barlian Dwinagara; Singgih Saptono; Dahono Haryanto; Shofa Rijalul Haq; Bagus Wiyono; Oktarian Wisnu Lusantono
Indonesian Mining Journal Vol 28 No 1 (2025): Indoneisan Mining Journal, April 2025
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol28.No1.2025.1548

Abstract

Rock slope stability analysis in a geotechnical study is an important issue in mining engineering. Kinematic analysis is a well-known method to determine potential failures of the rock slope based on structural orientations, but it sometimes disregards the structural properties information. Structural properties are often known as the highly interpreted domains in rock slope engineering; thus, simplification was made for the analysis. Simplification may lead to vague conditions of analysis and reduce its accuracy. Therefore, the aims of this research is to assess the effect of rock structure properties such as heterogeneity, discontinuity, and anisotropic properties of the rock mass. The assessment conducted using the limit-equilibrium method employed the Generalized Anisotropic (GA) material model were compared with finite element method (FEM) using the shear strength reduction (SSR) method employing the joint network rock mass model. The analysis results show that an actual rock slope with a generalized anisotropic material model in the LEM analysis and joint network material model in the FEM analysis is stable with Safety Factor > 1, and the maximum strain model is less than the minimum strain threshold (maximum strain < 0.1). Combining rock slope stability analysis methods aims to produce accurate and representative results regarding the rock mass' condition. This research improves the interpretation of rock slope stability analyses, resulting in a more accurate estimation of the factor of safety (FOS).
Co-Authors Akbar, Wahyu Nusantara Aminuyati Bagus Wiyono Barlian Dwinagara Cahyadi, Tedy Agung Deka Citra Dinata Indun Titisariwati Oktarian Wisnu Lusantono Rendy Fahlevi Shofa Rijalul Haq Singgih Saptono, Singgih