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Jarwanto Jarwanto
Universitas Muhammadiyah Yogyakarta
Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Nursing Social Sciences Transportation Other

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Journal : Nusantara Hasana Journal

 1 
PEMBAHASAN SOAL-SOAL UNTUK MENGHADAPI UJIAN MASUK PERGURUAN TINGGI DAN PELUANG UNTUK MASUK DUNIA KERJA BIDANG GEOLOGI DAN TAMBANG PADA SISWA SMK SABUMI BANJARBARU Jarwanto, Jarwanto
Nusantara Hasana Journal Vol. 4 No. 3 (2024): Nusantara Hasana Journal, August 2024
Publisher : Yayasan Nusantara Hasana Berdikari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59003/nhj.v4i3.1204

Abstract

This community service activity is entitled Discussion of Questions to Face the College Entrance Exam and Opportunities to Enter the World of Work in the Field of Geology and Mining for Students of SMK Sabumi Banjarbaru. Community Service Activities (PKM) for SMK Sabumi Mining students aim to provide real benefits both for the students themselves and for the surrounding community. The method of implementing the activity is carried out by means of lectures and practices related to college entrance exam questions and opportunities to enter the world of work in the fields of geology and mining. The results of this activity are that participants have knowledge and understanding in earth science and mining. Participants have knowledge and understanding in preparing students for internships and entering the world of work and will continue their undergraduate studies. Participants are given tips on working while studying, especially studying at the University of AKPRIND Indonesia by entering the employee class.
PERHITUNGAN VOLUME BATUAN MENGGUNAKAN SOFTWARE AUTOCAD CIVIL 3D DENGAN METODE RULE OF GRADUAL CHANGE DAN RULE OF NEAREST POINT Jarwanto, Jarwanto; Arie Noor Rakhman; Himawan Rico Sanjaya
Nusantara Hasana Journal Vol. 4 No. 8 (2025): Nusantara Hasana Journal, January 2025
Publisher : Yayasan Nusantara Hasana Berdikari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59003/nhj.v4i8.1322

Abstract

The research was conducted in an area located in Segoroyoso, Kapanewon Pleret, Bantul Regency, Yogyakarta Special Region Province. The enclosing rocks are part of the Semilir Formation in the form of tuff interspersed with lapilli. The rock located on this cliff will be cut with a length of 83 meters and a height of 36 meters with the aim of making a flat horizontal plane with an elevation of 50 meters above sea level which will then be made into building construction for the purposes of erecting boarding school buildings. The calculation of rock volume is based on Autocad Civil 3D software with the emphasis on 2 calculation methods, namely calculations using the Rule of Gradual Change and getting a volume of 106,714 m3 and according to the Rule of Nearest Point method getting a volume of 106,495 m3. There is a difference in the calculation results but the difference is not far adrift.
MODFLOW DAN FEFLOW UNTUK PEMODELAN HIDROGEOLOGI PADA AREA TAMBANG BATUBARA DI KALIMANTAN SELATAN Jarwanto, Jarwanto; Arie Noor Rakhman
Nusantara Hasana Journal Vol. 5 No. 1 (2025): Nusantara Hasana Journal, June 2025
Publisher : Yayasan Nusantara Hasana Berdikari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59003/nhj.v5i1.1613

Abstract

This study aims to compare the capabilities of MODFLOW and FEFLOW software in modeling groundwater flow in open-pit mining environments with complex geometries. The method includes literature review, technical feature analysis of both software, and evaluation of simulation performance based on hydrogeological parameters and geospatial conditions. The results show that MODFLOW offers advantages in accessibility due to its open-source nature and is efficient for mining areas with relatively simple geometries. However, its limitation in grid flexibility reduces its ability to accurately represent complex morphologies and geological structures. In contrast, FEFLOW provides higher flexibility through an unstructured mesh system and integrates saturated–unsaturated flow in a single model, making it more suitable for advanced hydrogeological modeling. FEFLOW's capability to represent irregular mining geometries, simulate chemical reactions, and provide 3D visualizations is highly relevant for mining conditions in Indonesia, although it is limited by higher computational demand and licensing costs. This study offers valuable insights into selecting groundwater modeling software based on geological complexity and mining analysis objectives.
PELATIHAN PRAKTIK ILMU YANG BERKAITAN DENGAN PELEDAKAN BATUAN DAN PENGANTAR ILMU KETEKNIKAN KEPADA SISWA SMKN 4 PALANGKARAYA Jarwanto, Jarwanto
Nusantara Hasana Journal Vol. 4 No. 12 (2025): Nusantara Hasana Journal, May 2025
Publisher : Yayasan Nusantara Hasana Berdikari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59003/nhj.v4i12.1614

Abstract

This Community Service activity is entitled "practical training related to rock blasting and an introduction to engineering science for students at SMKN 4 Palangkaraya." The objectives of this activity are to strengthen the relationship between the school and the community, apply students' knowledge and skills, develop soft skills, increase social and environmental awareness, and introduce the world of mining in a positive way. The activity method used is lectures or counseling and practical exercises at SMKN 4 Palangkaraya. The results of this activity are: Implementation of the Community Service Program (PKM) is carried out by providing students with mastery of understanding and skills in dealing with learning methods and mastering the material. Direct understanding is achieved through practical methods in the field regarding the blasting process, which is preceded by an opening and introductory activity on the rock blasting process. Following the field activity, a Zoom meeting was conducted directly from the AKPRIND Indonesia University campus by lecturers in the Geological Engineering Study Program, presenting material on rocks, minerals, engineering, and petroleum.
Co-Authors Annisa Annisa Arie Noor Rakhman Arie Noor Rakhman Fivry Wellda Maulana Himawan Rico Sanjaya Sihombing, T.