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All Journal Jurnal Geomine Journal of Geology and Exploration
Jamal Rauf Husain
Universitas Hasanuddin
Earth & Planetary Sciences Engineering

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Analisis Penggunaan Balldeck pada Kegiatan Peledakan untuk Meminimalisir Flyrock Arif Nurwaskito; Rahmat Agam Putra; Abdul Salam Munir; Habibie Anwar; Firman Nullah Yusuf; Muhammad Idris Juradi; Suriyanto Bakri; Sitti Ratmi Nurhawaisyah; Citra Aulia Khalik; Nur Asmiani; Mubdiana Arifin; Jamal Rauf Husain
Jurnal Geomine Vol 10, No 3 (2022): Edisi Desember 2022
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v10i3.1462

Abstract

Kegiatan peledakan akan menimbulkan dampak yang berisiko bagi lingkungan sekitar, salah satunya flyrock (batu terbang) hasil ledakan. Lemparan fragmen batuan yang melewati radius aman dapat merusak peralatan, mengakibatkan cidera, dan kehilangan nyawa pada manusia. Oleh karena itu digunakan balldeck sebagai instrumen tambahan untuk meminimalisir flyrock. Tujuan penelitian ini adalah untuk mengetahui ukuran geometri peledakan yang digunakan, mengetahui cara meminimalisir flyrock pada saat peledakan, dan mengetahui cara perhitungan hasil lemparan maksimal flyrock secara teoritis dengan penggunaan balldeck. Metode penelitian dilakukan dengan cara pengumpulan data berupa geometri peledakan, data jarak lemparan maksimum flyrock  sebelum dan setelah menggunakan balldeck. Hasil penelitian diperoleh hasil rata-rata volume geometri peledakan yaitu 46.231,94 BCM, hasil rata-rata lemparan maksimum flyrock sebelum menggunakan balldeck 149,1 m, hasil rata-rata lemparan maksimum flyrock menggunakan balldeck 58,7 m, dan hasil rata-rata jarak lemparan maksimum flyrock menggunakan balldeck berdasarkan teori Richard and Moore, yaitu 80,43 m (Face Burst) dan 59,54 m (Cratering ). Adapun faktor yang meminimalisir flyrock yaitu kedalaman lubang tidak dangkal, kolom stemming tidak pendek, dan juga penggunaan balldeck di dalam lubang bor. 
Structure Control of Iron Ore Education on Sebuku Island Jamal Rauf Husain; Normansyah Normansyah; Hasbi Bakri
Journal of Geology and Exploration Vol. 1 No. 1 (2022): Journal of Geology and Exploration, June 2022
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1468.538 KB) | DOI: 10.58227/jge.v1i1.2

Abstract

Sebuku is occupied by serpentinized ultramafic (peridotite) rocks, gabbro, and chert which are ophiolite series formed in the oceanic crust, in the middle occupied by tuff and claystones. The purpose of this study was to determine the distribution pattern of iron ore deposits. The research area illustrates that the distribution of Fe elements with high levels of >48% is concentrated in the northeast-southwest part, while Fe elements with levels of <48% are concentrated in the southwest-northwest part of the west. Based on the topographic classification of the research area. The pattern of mineralization follows the structural pattern that occurs, where the lateralization of the source rock is intensive in the crushing zone around the structure that forms the main structure and minor structure. This destruction zone serves as an effective water infiltration medium to accelerate the washing process which forms supergene enrichment zones. The pattern of distribution of mineralization is relatively Northeast-Southwest which in some places is characterized by the straightness of the ridge or morphology with more contrasting and prominent zones on the lidar mosaic map.
Analisis Geohidrologi Limpasan Permukaan Menggunakan Sistem Informasi Geografis Bagian Hulu Sub Das Tangka Provinsi Sulawesi Selatan Rohaya Langkoke; Jamal Rauf Husain; Ilham Alimuddin; Faisal Faisal
Jurnal Geomine Vol 11, No 1 (2023): April 2023
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v11i1.1621

Abstract

Water is the source of life so that makes water an important component. Geohydrological analysis of surface runoff aims to investigate changes in the geohydrological cycle due to geomorphological processes that turn water into surface runoff from previously seeping below the surface. This research uses the Bransby-William’s method in the analysis of runoff coefficients which consider the parameters of relief, soil infiltration, land cover, surface storage, and rainfall intensity. The research area is located in the upstream part of the Tangka sub-watershed, South Sulawesi Province, specifically at coordinates 5°07’58.9” – 5°17’23.1” South Latitude and 119° 52’ 45.2”- 120° 00’ 20.5” East Longitude.  Surface runoff is 48.87%, resulting in a large potential for flooding and landslides.  The surface flow discharge is 385,468 m3/second. 
Groundwater Quality Analysis In Sidomulyo Hamlet, Argomulyo Village, Kalaena District East Luwu County Andri Widianto; Jamal Rauf Husain; Firman Nullah Yusuf
Journal of Geology and Exploration Vol. 2 No. 1 (2023): Journal of Geology and Exploration, June 2023
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jge.v2i1.51

Abstract

The geographical condition of Kalaena District is one of the sub-districts in East Luwu Regency. Kalaena District is located at 2o 03' 00” – 2o 30' 31” South Latitude and 120 o 49’30” - 121 o 00’ 30” East Longitude with an area of 64.54 km2. Groundwater is part of the water that is below the surface of the ground, groundwater is a necessary need for the community, making the quality of groundwater very necessary to be maintained and maintained. The data collection stage is the activity of retrieving all the required field data. The data used in this study were obtained from the results of direct surveys in the field on several wells in Argomulyo village, taking water samples and then testing the pH value, color, taste, smell, turbidity, weather, well depth, water level, well diameter, citizen interview data and research documentation photos, then several samples were subjected to laboratory tests to find out the chemical content in the residents' wells. It is known that the results of the study show that the contents of TDS, DO, calcium, iron and chloride are still below the threshold, only turbidity has a value above the permitted threshold, the feasibility of shallow groundwater is based on Government Regulation of the Republic of Indonesia No.22 article 1 paragraph 37 of 2021 in the research area based on the results of chemical analysis and physical tests performed. fall into class 3 category.
Co-Authors Abdul Salam Munir Andri Widianto Arif Nurwaskito Arifin, Mubdiana Bakri, Hasbi Bakri, Suriyanto Citra Aulia Khalik Faisal Faisal Firman Nullah Yusuf Habibie Anwar Idris Juradi, Muhammad Ilham Alimuddin Normansyah Normansyah Nur Asmiani Nurhawaisyah, Sitti Ratmi Rahmat Agam Putra Rohaya Langkoke