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All Journal Techno LPPM Science and Environmental Journals for Postgraduate Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
Eddy Winarno
Universitas Pembangunan Nasional Veteran Yogyakarta
Aerospace Engineering 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 Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation

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Tinjauan Literatur: Evaluasi dan Keandalan Klasifikasi Massa Batuan Menggunakan Uji Beban Titik Astika Putri Roshinta; Singgih Saptono; S. Koesnaryo; Tedy Agung Cahyadi; Eddy Winarno
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Rock mass classification is used as an important parameter in determining rock reaction to a construction, one of several rock mass classification methods is point load test. Point load test is preferred because of its ease in determining rock mass classes, both in terms of cost and time. Until now, many research results have been found that discuss the point load test with the aim of reducting the error value from the test result. In this research, a literature review was conducted from several research results to find outlines of things that must be considered and determine its superiority in converting to other test values. The results showed that the operator's ability, cone plate geometry, periodic tool maintenance, loading arm length and sample geometry as things to consider in point load test and point load index value can be converted to uniaxial compressive strength value, taking into account the geological conditions and correction values for each rock type.Keyword : PLT, rock mass classification, tool, test
A Review of Artificial Intelligent for Prediction Ground Vibration in Blasting Risaldi Hidayat; Tedy Agung Cahyadi; Eddy Winarno; Singgih Saptono; S. Koesnaryo
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Blasting activities cause ground vibrations that affect the potential for ground displacement in surface mining. That will have an impact on the stability of the slope and environmental problems. Therefore, it is necessary to analyze the prediction ground vibrations measured by peak particle velocity (PPV). Artificial Intelligent (AI) has an important role to overcome the limitations of parameters used, uncertainty, and inaccuracy than conventional methods. AI for prediction ground vibration has grown a lot in recent years. To find out an accurate and effective AI technique, the authors compare several techniques by evaluating their strengths and weaknesses based on literature studies. The ICA-M5Rules model and ICA-ANN model are techniques that have high accuracy and flexibility of use than other presented techniques. And related to the use of parameters, there are other parameters that play an important role which will be reviewed in this journal.
Tinjauan Literatur: Pelapukan dan Pengaruhnya terhadap Kekuatan Batuan Dwi Yolanda Sumbung; S. Koesnaryo; Eddy Winarno; Singgih Saptono; Tedy Agung Cahyadi
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Rock strength can be known from it's physical and mechanical properties which are strongly influenced by weathering. It requires a lot of time and research cost to find out about the effect of weathering on rock strength in various types of rock, therefore research was conducted in a literature review. The higher of weathering class affect the decrease of rock strength.
Analysis of Stress and Pillar Strength in Underground Coal Mines Ilep Prengki; Barlian Dwinagara; S Koesnaryo; Singgih Saptono; Eddy Winarno
Science and Environmental Journal for Postgraduate Vol 5 No 2 (2023): Science and Environmental Journals for Postgraduate (SENJOp)
Publisher : Pascasarjana, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/senjop.v5i2.188

Abstract

Underground coal mining is located in Tanah Kuning, Batu Tanjung Village, Talawi District, Sawahlunto City. Some constraints arose in a CV. BMK is the existence of several mining fronts on mining blocks that have started to become critical and fail. It can be seen from the condition of the supports in some places that they have started to crook and break. In addition, in several locations, many rocks were found hanging (wedges) on the roof of the openings that could be seen between the rows of supports. This indicates a significant change in strain around the coal pits and pillars. The research was carried out by testing in situ stresses using Flat-jack, observing the condition of the rock mass, and testing the physical and mechanical properties of the rock. The purpose of this study was to find out the magnitude of the strength and stress on the pillarbased on the theory of tributary area loading, to provide safe and economical pillar geometry recommendations, and to discover the causes of rock mass movements. Based on the results of the analysis using the Tributary Area theory, the Safety factor Pillar 1 obtained was categorized as unsafe based on the reference value of the safety factor. The most ideal pillar size recommendation based on previous geotechnical studies was 9 m x 9 m with a maximum recovery of 38% and a safety factor of 1.7. Based on the results of the calculation of strength and loading on the pillars, the value of Pillar 1 strength is 6.0 MPa, Pillar 2 strength was 9.57 MPa, and Pillar 3 was 10.9 MPa with the value of Pillar load for Pillar 1 = 5.1 MPa, Pillar 2 = 4.47 MPa and Pillar 3 = 5.58 Mpa.
RESOURCE ESTIMATION OF LATERITE NICKEL USING INVERSE DISTANCE WEIGHTING METHOD CASE STUDY OF NORTH KONAWE DISTRICT, SOUTHEAST SULAWESI PROVINCE Sofiannur Sofiannur; Eddy Winarno; Nur Ali Amri; Abdul Jalil
Techno LPPM Vol 9, No 1 (2023)
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

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Abstract

The mining industry's estimation of mineral resources is a stage that is carried out to determine the quantity of a mineral. This study aimed to determine the selection of laterite nickel resource estimation methods. The determination of the estimation method is based on the value of the coefficient of variance and the geological conditions of the mineral deposits. This research area is in Lasolo Kepulauan District, North Konawe Regency at PT—x block south. Statistical analysis found that the coefficient of variance in the limonite zone was 0.19, the saprolite area was 0.37, and it was included in moderate geological geometry conditions. The estimation method used in this research is the inverse distance weighting method. The estimation results in the limonite zone are 3,398 tons with an average Ni content of 0% Ni, 448,037 tons with a moderate Ni content of 1.32%, 588,256 tons with an average Ni content of 1.65%, and 14,912 tons with an average Ni content of 2.01%. In comparison, in the saprolite zone, there are 174.46 3 tons with a middle grade of Ni of 0.84%, 408,896 tons with an average quality of Ni of 1.26%, 788,818 tons with moderate content of Ni of 1.77%, 771,709 tons with a middle grade of Ni of 2.21%, 172,236 tons with an average quality of Ni of 2.63%, and 5,215 tons with an average rate of Ni of 3.04 %.
Co-Authors Abdul Jalil Astika Putri Roshinta Barlian Dwinagara Cahyadi, Tedy Agung Dwi Yolanda Sumbung Ilep Prengki Nur Ali Amri Risaldi Hidayat S Koesnaryo S. Koesnaryo Singgih Saptono, Singgih Sofiannur Sofiannur