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All Journal Journal of Degraded and Mining Lands Management JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards) Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat Journal of Geology and Exploration J-Sil (Jurnal Teknik Sipil dan Lingkungan)
Pachri, Hendra
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Engineering Environmental Science Public Health Transportation

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PKM Community Partnership Program: Strengthening the Capacity of the Salenrang Village Community, in Optimizing the Management of Geopark Area Geotheritage, Maros Regency South Sulawesi Province Sirajuddin, Haerany; Pachri, Hendra; Imran, A. M.; Husain, Jamal Rauf; Langkoke, Rohaya; Husain, Ratna; Farida, Meutia; Maulana, Adi; ., Sultan; ., Agustinus; Thamrin, Meinarni; ., Safruddim; Hidayah, Bahrul; Fajrin, Muh.; Azrul, Muh. Zulfahmi; Ikhsan, Nurul
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 7 No 1 (2024): Community Development
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v7i1.372

Abstract

Indonesia is a country that has many islands and is rich in tourist destinations such as natural tourism, history, religion, culture, and so on. This attracts foreign tourists to visit or travel to Indonesia. One of the leading destinations in South Sulawesi which attracts foreign and domestic tourists is the Rammang-Rammang Karst in Maros which is known as the largest karst in Indonesia and is also a Global Karst Geopark Area approved by UNESCO. Rammang-Rammang Karst is an area that has a unique panorama, namely the type of karst, namely, tower karst with the natural landscape shape (geomorphology) of the Maros-Pangkep Karst area. Increasing the capacity of the Salenrang Village community is urgently needed so that the dissemination of geology-based information is more optimal. Therefore, the Department of Geological Engineering, Faculty of Engineering, Hasanuddin University, in collaboration with the Salenrang Village Government, organized a Laboratory Based Education (LBE) Service to increase the capacity of the people of Salenrang Village, Maros Regency. The methods used in this LBE event are observation, socialization and presenting information on tourist destinations through pamphlets and brochures. The observation method is carried out with the aim of systematically obtaining data on objects that will be socialized at the LBE service location in detail. Socialization was carried out to the Salenrang Village community about the tourism potential and geological conditions of the Rammang – Rammang Karst by distributing brochures and pamphlets to the Salenrang Village community in the LBE event area. Based on the results of the questionnaire, around 63% of visitors understand geological information in the tourist area, making it a challenge to disseminate better information. Through this LBE event, the people of Salenrang Village have proven that scientific information related to geological characteristics is very helpful in managing the geoheritage of the Rammang Rammang Area so that the increase in visitors will increase.
Sosialisasi Potensi Bahaya Geologi dan Mitigasinya di Kecamatan Herlang, Kabupaten Bulukumba, Provinsi Sulawesi Selatan Pachri, Hendra; Imran, A. M.; Azikin, Busthan; Jaya, Asri; Langkoke, Rohaya; Husain, Ratna; Arifin, Fauzi; Burhanuddin, Safri; ., Kaharuddin; Hidayah, Bahrul
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 7 No 1 (2024): Community Development
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v7i1.437

Abstract

Bulukumba Regency experienced a geological disaster caused by land movement in the form of landslides and horizontal ground shifts on 24 May 2023. Damage to several government buildings and facilities occurred due to the geological disaster. The government of Bulukumba Regency is aware of the geological disaster that is signalled to continue. Therefore, the Labo-Based Education (LBE) service activity of the Faculty of Engineering was carried out in the Herlang sub-district, Bulukumba Regency. This LBE activity was carried out with the Department of Geological Engineering, Hasanuddin University, and the Government of Herlang District, Bulukumba Regency. This LBE service activity aims to increase the capacity of government and community to introduce geological natural disasters and mitigation efforts. The methods used are making socialisation documents and socialisation of geological disasters to the Herlang sub-district government. Assessment of programme achievement was conducted during the socialisation and by giving short questionnaires before and after the socialisation (post-test). Socialisation on geological hazard potential and mitigation was conducted with the sub-district government, community leaders, community organisations, and the general public, with 46 participants. Based on the questionnaire result, about 85% of the participants understood the geological information in the Herlang sub-district, Bulukumba Regency. The socialisation activity is expected to be sustainable in educating the community to achieve responsive and well-coordinated disaster mitigation.
A new approach to determining the slip surface in tuff to determine the volume of landslide material: A case study on the West Sinjai road section, Sinjai Regency, South Sulawesi, Indonesia Busthan, Busthan; Pachri, Hendra; Alimuddin, Ilham; Bahri, Syamsul; Bundang, Syarifullah
Journal of Degraded and Mining Lands Management Vol. 11 No. 2 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.112.5533

Abstract

Analysis of landslide slip surface based on the engineering properties of tuff rocks, including shear strength, water content, and infiltration rate on the West Sinjai road section, South Sulawesi, Indonesia. This study aimed to analyze the effect of shear strength, water content infiltration rate, and weathering grade of tufa rocks in the study area. The methods used in this study area included a study of weathered tuff profile characteristics, weathered tuff infiltration testing and residual soil (RS) determination of weathered tuff water content and residual soil, and testing of shear strength of weathered tuff and residual soil. This research used aspects of engineering geology, including shear strength, water content, and infiltration rate, as well as rock weathering grade to determine the slip surface in tuff to determine the volume of landslide material. The results showed that the tuff profile consisted of four grades, namely moderately weathered tuff (MW), highly weathered tuff (HW), completely weathered tuff (CW), and soil residual (RS). The rate of tuff infiltration increases with increasing weathering grade. The water content is more significant with the high degree of weathering of tuff. At the same time, the shear strength decreases with high weathering. Therefore, the research area is prone to landslide events. The slip surface is in a layer of moderately weathered tuff rock (MW), and those that experience landslides are highly weathered tuff rock (HW), completely weathered (CW), and residual soil (RS).
Utilization of Geological Wealth of Celebes Canyon Tourism Area, Libureng Village, Tanete Riaja District, Barru Regency Sirajuddin, Haerany; Pachri, Hendra; Imran, A. M.; Langkoke, Rohaya; ., Kaharuddin; ., Sultan; Burhanuddin, Safri; ., Bahrul; Halide, Lidemar; A., Dwi Nuraeni; Jannah, A. Mifthahul
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 7 No 2 (2024): Kolaborasi yang Kuat untuk Kekuatan Kemasyarakatan
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v7i2.544

Abstract

The development of the tourist area in Celebes Canyon, Libureng Village, Tanete Riaja District, Barru Regency, has enormous potential in utilizing the geological wealth of the area, where the rocks resemble the Grand Canyon in America. Community service activities in Libureng Village aim to provide understanding and socialize the utilization of the geological wealth of Celebes Canyon to the community living around the tourist area, in this case as community service partners, as well as identifying the challenges and opportunities in developing this tourist destination. With an inclusive approach, it is hoped that Celebes Canyon will not only be a tourist attraction, but also provide economic and social benefits to the surrounding community. The method used in this LBE (Laboratory Based Education) community service activity is to conduct observations aimed at obtaining systematic data on the objects to be socialized and continued with socialization activities to the Libureng village community. Based on the results of the observation, it was found that the development of facilities and infrastructure around the tourist attraction needs to be carried out to maintain the geological potential and natural beauty and reduce environmental damage, besides that it is also necessary to always maintain cleanliness around the tourist area. During the socialization activity, a pre-test was conducted on 20 local residents regarding the potential and utilization of geological wealth, as well as the importance of maintaining the environment around the tourist area, the results showed that the level of understanding was in the range of 15% - 42%, but the post-test showed an increase in understanding of 22% - 67%. The importance of cooperation between various stakeholders to create a harmonious partnership in managing tourist attractions; as well as improving the quality of human resources from both managers and local communities is very much needed to support the development of sustainable tourist attractions.
Characteristics of Laterite Nickel Based on Geochemical Data and Electrical Resistivity Tomography (ERT) of Ultramafic Rocks in the Sorowako Area, East Luwu Regency Patadungan, Erika; Azikin, Busthan; Pachri, Hendra
Journal of Geology and Exploration Vol. 3 No. 2 (2024): Journal of Geology and Exploration, December 2024
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jge.v3i2.179

Abstract

In laterite nickel exploration, PT.Vale Indonesia Tbk, initialy relied solely on drilling methods to define profile boundaries based on mineral content and rock characteristics, but discrepancies of around 2% between reserve estimates and actual mining outcomes led to the adoption of geophysical methods as a complementary approach in 2014. This study aims to determine the characteristics of laterite nickel profiles by correlating resistivity values with geochemical data. Using Datamine and Leapfrog software, a 3D model of laterite nickel profiles was generated, identifying limonite (0–10 m depth, 201–250 Ohm.m resistivity), saprolite (0–10 m depth, 101–200 Ohm.m resistivity), and bedrock (>10 m depth, 101 to >801 Ohm.m resistivity). Variations in resistivity are influenced by factors such as mineral content and morphology. The volume estimated from resistivity correlation and drillhole data is 1,625,300 m³ for limonite and 1,902,600 m³ for saprolite, compared to 1,523,100 m³ and 1,390,100 m³ based on drillhole-only data, showing discrepancies of 6% and 27%, respectively. This study provides a clearer understanding of geological modeling using drillhole and ERT data to support laterite nickel ore mining and correlation modeling.
THE CONTRIBUTION OF MORPHOLOGY TO THE QUANTITATIVE POTENTIAL OF NICKEL LATERITE DEPOSITS HIGHLY WEATHERED ULTRAMAFIC ROCKS IN THE SOUTHEAST ARM REGION OF SULAWESI ISLAND, INDONESIA Pachri, Hendra; Imran, A M; Hizbullah, Izza
Jurnal Lingkungan dan Bencana Geologi Vol 15, No 3 (2024)
Publisher : Badan Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34126/jlbg.v15i3.523

Abstract

ABSTRACTThe research locations include Pomalaa in Kolaka Regency, Southeast Sulawesi, and Sorowako in East Luwu Regency, South Sulawesi. This study primarily aims to examine the comparative impact of morphology on the distribution of nickel ore enrichment zones and nickel ore thickness within laterite deposits in Southeast Sulawesi, specifically contrasting Pomalaa and Sorowako. The research was conducted in multiple phases: preparation (including planning for costs, timelines, and permits), data collection (which covers both field and laboratory analyses for material properties and geological information), data analysis (which involves laboratory tests utilizing XRF, petrographic studies, slope morphology evaluations, and profiles of lateritic nickel deposits), representation of morphology features in graphical format, and finally, compiling a scientific report based on the data analyses and interpretations. The relationship between characteristics of laterite profiles and morphology indicates that the steepness of slopes impacts water drainage and the lateralization process, with certain morphologies displaying superior thickness than others. Moreover, the thickness observed at some boreholes is affected not only by morphology but also by structural aspects, as indicated by favorable Rock Quality Designation (RQD) values. This study has mainly highlighted the effects of morphology and zone thickness on the nickel concentration found in laterite deposits. Therefore, it is suggested that further research should investigate additional factors, such as the structural properties of nickel laterite deposits.Kata kunci: Bedrock, Morphology, Nickel Laterite, Rock Quality Designation (RQD)ABSTRAKLokasi penelitian meliputi Pomalaa di Kabupaten Kolaka, Sulawesi Tenggara, dan Sorowako di Kabupaten Luwu Timur, Sulawesi Selatan. Penelitian ini bertujuan untuk mengkaji dampak perbandingan morfologi terhadap sebaran zona pengayaan bijih nikel dan ketebalan bijih nikel dalam endapan laterit di Sulawesi Tenggara, khususnya membandingkan Pomalaa dan Sorowako. Penelitian dilakukan dalam beberapa tahap: persiapan (termasuk perencanaan biaya, jadwal, dan izin), pengumpulan data (yang mencakup analisis lapangan dan laboratorium untuk sifat material dan informasi geologi), analisis data (yang melibatkan uji laboratorium menggunakan XRF, studi petrografi, evaluasi morfologi lereng, dan profil endapan nikel laterit), representasi fitur morfologi dalam format grafis, dan akhirnya, menyusun laporan ilmiah berdasarkan analisis dan interpretasi data. Hubungan antara karakteristik profil laterit dan morfologi menunjukkan bahwa kecuraman lereng memengaruhi drainase air dan proses lateralisasi, dengan morfologi tertentu menunjukkan ketebalan yang lebih unggul daripada yang lain. Selain itu, ketebalan yang diamati di beberapa lubang bor tidak hanya dipengaruhi oleh morfologi tetapi juga oleh aspek struktural, seperti yang ditunjukkan oleh nilai Rock Quality Designation (RQD) yang baik. Studi ini terutama menyoroti efek morfologi dan ketebalan zona pada konsentrasi nikel yang ditemukan dalam endapan laterit. Oleh karena itu, disarankan agar penelitian lebih lanjut menyelidiki faktor-faktor tambahan, seperti sifat struktural endapan laterit nikel.Keywords: Batuan dasar, Morfologi, Laterit Nikel, Rock Quality Designation (RQD)
Peran Serta Informasi Peta Geologi Lembar Pangkajene dalam Pengembangan Wilayah Kabupaten Pangkajene dan Kepulauan Pachri, Hendra; Alimuddin, Ilham; Thamrin, Meinarni; Azikin, Busthan; ., Sultan; Sirajuddin, Haerany; ., Bahrul; Umar, Imran; Irfan, Ulva Ria; Farida, Meutia; Langkoke, Rohaya
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 8 No 1 (2025): Community Empowerment through Higher Education Community Service Programs
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v8i1.590

Abstract

Peta geologi merupakan instrumen penting dalam perencanaan tata ruang dan pengelolaan sumber daya alam. Kegiatan ini bertujuan untuk mensosialisasikan Pemanfaatan Peta Geologi Lembar Pangkajene skala 1:50.000 kepada masyarakat dan pemangku kepentingan di Kabupaten Pangkajene dan Kepulauan (Pangkep), Sulawesi Selatan. Kegiatan ini merupakan hasil kolaborasi antara Departemen Teknik Geologi, Fakultas Teknik, Universitas Hasanuddin dan Pemerintah Kabupaten Pangkep. Metode kegiatan diawali dengan observasi awal, penyiapan materi, serta pelaksanaan sosialisasi yang dilanjutkan dengan pengukuran tingkat pemahaman melalui pre test dan post test. Sosialisasi dilaksanakan pada tanggal 22 Oktober 2024 di Kantor Bupati Pangkep, dengan melibatkan 30 peserta dari aparat pemerintah daerah dan masyarakat desa Libureng. Hasil pre test menunjukkan bahwa mayoritas peserta berada pada kategori “Kurang Paham” (42%) dan “Tidak Paham” (15%) mengenai informasi geologi. Setelah sosialisasi, hasil post test menunjukkan peningkatan signifikan: kategori “Sangat Paham” naik menjadi 67%, sementara “Tidak Paham” turun menjadi 0%. Kegiatan ini berhasil meningkatkan pemahaman peserta terhadap potensi geologi dan pentingnya pemanfaatan Peta Geologi dalam perencanaan wilayah yang berkelanjutan. Temuan ini menunjukkan bahwa pendekatan edukatif dan partisipatif efektif untuk meningkatkan kesadaran masyarakat terhadap pengelolaan sumber daya geologi secara tepat guna dan berkelanjutan.
Physical Vulnerability Modeling Based On Flood Inundation Model and Image Mining Rau, Maulana Ibrahim; Samodra, Guruh; Pachri, Hendra; Irwansyah, Edy; Subair, Muhammad
Jurnal Teknik Sipil dan Lingkungan Vol. 1 No. 3: Desember 2016
Publisher : Departemen Teknik Sipil dan Lingkungan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsil.1.3.137-146

Abstract

Flash flood disaster occurred within the City of Garut, West Java, Indonesia, on 20th September 2016, which caused many casualties and damages. Flood model could be performed to model the already-occurring disaster, as well as to depict future events that may occur to overcome any potential disasters, where the inundation flood model depicted the element at risk. In order to assist the analysis for the damages occurred, image mining could be used as part of the approach, where online media was utilized as well. The image mining resulted information about building damages caused by the flood. Afterwards, the physical vulnerability (buildings/residents) model could be further performed. Finally, the relationship between vulnerability and the flood inundation were portrayed. The resulted physical vulnerability model showed that larger height of the flood water caused higher degree of loss of the building, in which portrayed the need for total rebuild of houses as well. Considering available open source data and fast data acquisition, the approach showed such efficient approaches, where the results could be used in order to establish recommendation for building reinforcement, spatial planning, or protection wall in flood prone areas within the future time.
Co-Authors ., Agustinus ., Bahrul ., Kaharuddin ., Safruddim A. M. Imran A., Dwi Nuraeni Adi Maulana, Adi Azrul, Muh. Zulfahmi Busthan Azikin Busthan, Busthan Edy Irwansyah Fajrin, Muh. Fauzi Arifin Haerany Sirajuddin Halide, Lidemar Hidayah, Bahrul Hizbullah, Izza Husain, Ratna Ilham Alimuddin, Ilham Imran, A M Jamal Rauf Husain Jannah, A. Mifthahul Maulana Ibrahim Rau, Maulana Ibrahim Meinarni Thamrin Meutia Farida Nurul Ikhsan Patadungan, Erika Rohaya Langkoke Safri Burhanuddin Samodra, Guruh Siti Helmyati Subair, Muhammad Sultan . Syamsul Bahri Syarifullah Bundang Ulva Ria Irvan Umar, Imran