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Journal of Geoscience, Engineering, Environment, and Technology

JGEET
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Published by Universitas Islam Riau

ISSN : 2503216X EISSN : 25415794 DOI : 10.25299

Core Subject : Science, Social, Engineering,

Earth & Planetary Sciences Engineering Environmental Science Physics

JGEET (Journal of Geoscience, Engineering, Environment and Technology) published the original research papers or reviews about the earth and planetary science, engineering, environment, and development of Technology related to geoscience. The objective of this journal is to disseminate the results of research and scientific studies which contribute to the understanding, development theories, and concepts of science and its application to the earth science or geoscience field. Terms of publishing the manuscript were never published or not being filed in other journals, manuscripts originating from local and International. JGEET (Journal of Geoscience, Engineering, Environment and Technology) managed by the Department of Geological Engineering, Faculty of Engineering, Universitas Islam Riau.

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Articles 608 Documents

57 58 59 60 61

Analysis Of Co2 Storage in A Saline Aquifer Using A Fully Implicit Integrated Network Modeling Approach in the 'AZ' Field Swadesi, Boni; Zayd, Ahmad; Buntoro, Aris; Kristanto, Dedi; Widiyaningsih, Indah; Lukmana, Allen Haryanto
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 4 (2025): JGEET Vol 10 No 04 : December (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.4.25106

The increasing carbon dioxide (CO2) emissions from industrial and energy activities have driven the development of Carbon Capture and Storage (CCS) technology as a key solution for climate change mitigation. Among various geological storage options, saline aquifers offer significant advantages due to their large storage capacity, wide distribution, independence from hydrocarbon value, and stable geological and geochemical conditions. The “AZ” Field, located near a power plant emitting 2.2 million tons of CO2 annually, was selected as the study site for CO2 storage. This study aims to analyze the trapping mechanisms and optimize the CO2 storage capacity (storativity) using a fully implicit integrated modeling approach. The methodology involves building a static and dynamic model of the Johansen Formation saline aquifer, and integrating well and surface facility models using the well designer and network designer features in tNavigator. A 140-year simulation was conducted, comprising 40 years of injection and 100 years of post-injection period. Simulation results show that the “AZ” Field can store up to 83.9 Mt of CO2, predominantly through solubility/residual trapping mechanisms, in addition to structural trapping. No leakage was observed to the surface, indicating that caprock integrity remained intact throughout the simulation period. The fully implicit integrated modeling approach effectively captured the dynamic interactions between the reservoir, wells, and surface facilities, supporting the feasibility of the “AZ” Field as a safe and sustainable CO2 storage site.

Health Infrastructure Service Management Using Nonlinear Pushover Analysis Based on Earthquake Response Spectrum Paikun; Nelfia, Lisa; Suhendi, Cece; Aulia, Riza; Dunu, Williams
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 4 (2025): JGEET Vol 10 No 04 : December (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.4.25613

This study aims to determine the inter-floor shift due to earthquake spectrum response using nonlinear pushover analysis in a clinic building located in the Cimandiri Fault Zone as a basis for healthcare infrastructure management. This is very important because healthcare infrastructure is a place that must be available in any condition, even after an earthquake disaster. The Sukabumi area is an area located in the Cimandiri Fault Zone, so buildings in this area must be specifically designed to remain intact during disasters, especially earthquakes that often cause building damage. The research object that is the case study in this study is a 4-story clinic building that uses a reinforced concrete structure. The method used in the earthquake spectrum response analysis refers to SNI 1726:2019 and SNI 2847:2019, which have available spectral response webs, while the nonlinear pushover analysis uses the ATC-40 and FEMA-440 methods implemented in ETABS. The results of the analysis show that the inter-floor shift on the second and third floors exceeds the specified service limits, so it can be stated that the clinic building structure service in this case study requires damage control (DO). This can be seen based on the analysis results that the inter-floor shift of 201 mm in the X direction and 190 mm in the Y direction can cause moderate damage that can be repaired, so that health infrastructure service management is very necessary. Controlling recurrent damage due to earthquakes can be done with three retrofit scenarios consisting of the addition of shear walls, column coating, and steel reinforcement. The three scenarios are assessed and ranked based on the reduction of shifts, repair duration, and functional disruption. The addition of shear walls is the main recommendation without disrupting functionality, while column coating and the addition of steel reinforcement can disrupt health service operations. Retrofit scenarios can be recommended to support a sustainable health service infrastructure system in earthquake-prone areas. Earthquake spectrum response is a key factor that needs to be reviewed in building damage analysis as a basis for risk control management of health service infrastructure.

Front matter JGEET Vol 10 No 4 2025 Adi Suryadi
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 4 (2025): JGEET Vol 10 No 04 : December (2025)
Publisher : UIR PRESS

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Back matter JGEET Vol 10 No 04 2025 Adi Suryadi
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 4 (2025): JGEET Vol 10 No 04 : December (2025)
Publisher : UIR PRESS

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Front matter JGEET ICUPERTAIN Vol 10 No 04-02 2025 Adi Suryadi
Journal of Geoscience, Engineering, Environment, and Technology Special Issue from The 2nd International Conference on Upstream Energy Technology and Digitalization
Publisher : UIR PRESS

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Unravelling the Sequence Stratigraphy Impact on Coal Geometry of M2 Member, Muara Enim Formation Hibatullah, Kevin Nabil; Setiawan, Budhi; Rochmana, Yogie Zulkurnia; Wicaksono, M Dwiki Satrio
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 1 (2026): Article in Press - JGEET Vol 11 No 01 : March (2026)
Publisher : UIR PRESS

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Sequence stratigraphy involves studying a series of rock layers deposited during a full change cycle in accommodation or sediment supply, bounded by subaerial unconformities and marine correlative conformities. This study aims to identify the stratigraphic sequence that controls the coal accumulation models and their influence on the coal geometry. The research methodology includes geological mapping, analysis of geophysical logs (gamma-ray and short density), and core log analysis. The data were analyzed, combined, interpreted, and simulated to create a model of coal accumulation and geometry. The M2 Member of the Muara Enim Formation comprises six lithofacies, as determined by analyzing four drill holes. The M2 Member of the Muara Enim Formation exhibits four depositional environments (crevasse splay, mire/swamp, mudflat, lagoon, and tidal/mouth/distal bar) and three facies associated with the fluvial delta–tidal plain facies (fluvial dominated upper delta plain, tide-dominated lower delta plain, and marginal tidal plain and lagoon). This research identified four system tracts, namely TST-1, HST-1, TST-2, and HST-2. TST-1 and TST-2 show continuous coal deposition, inclined to steeply inclined, interspersed, and characterized by the presence of three layers of clay bands. Similarly, HST-1 and HST-2 exhibit continuous coal deposition with gentle to steep inclined and interspersed, ranging from moderately thick to very thick, and containing one to five layers of clay bands. The tectonic activity after deposition caused the deposited coal to deform. The findings of this study contributed to guiding the exploration of coal seams in the South Sumatra Basin and Muara Enim Formation, in particular.

Slope Stability Analysis Through the Application of Digital Imagery and Field Validation Using SMR and Q-Slope Methods: A Case Study of Bandar Lampung City, Indonesia Hilman, Zaki; Edo Kharisma Army; Rezki Naufan Hendrawan
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 1 (2026): Article in Press - JGEET Vol 11 No 01 : March (2026)
Publisher : UIR PRESS

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The investigation is on slope stability in cities such as Bandar Lampung by combining digital imagery from Geographic Information Systems (GIS) and field validation using Slope Mass Rating (SMR) and Q-Slope methods. The research study emphasizes the area of study, which is the city of Bandar Lampung, as the topography is highly diverse and the incidence of landslides is high. The Analytical Hierarchy Process (AHP) employed slope stability assessment by indicating vital parameters such as slope gradient, Normalized Difference Vegetation Index (NDVI), rock type and rainfall, and used AHP to produce a detailed slope stability map, classifying the areas surveyed into three degrees of hazards: low, medium and high. Of these results, low hazard areas occupy an area of 101.56 km², medium hazard areas area covers 52.79 km², and high hazard areas occupy an area of 25.47 km². Field validation using SMR and Q-slope methods at vital sites revealed that most slopes fall into classes of stability, poor to very poor. The dominant types of landslides identified are planar and wedge failures. Based upon the Q-Slope Stability Chart recommended stable slope angles from a range of 42° to 61° were established for different sites. This study shows that these areas are characterized by medium to high hazards, offering steep slopes that have little or almost no vegetational cover, thus greatly enhancing the possibilities of landslides taking place. A Well established correlation between GIS-based mapping and field observation proves how accurate the results would be in the integration of SMR and Q-Slope approaches that would give even better recommendations for slope stabilization measures or landslide mitigations. Findings of the research provide significant information for the matters of urban spatial planning and pro-active disaster risk management in landslide-prone regions of Bandar Lampung.

Feasibility and Safety Study of Grounding Design with Soil Resistivity Method in Penajam Area, East Kalimantan, Indonesia Emir Dzakwan Kamal Zein; Dani, Ilham; Rasimeng, Syamsurijal
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 1 (2026): Article in Press - JGEET Vol 11 No 01 : March (2026)
Publisher : UIR PRESS

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As the need for electrical energy for various sectors increases, especially in Penajam, East Kalimantan, which is currently under construction of the Indonesian Capital City (IKN), the existence of a power plant is very necessary. The construction and development of power plants require special studies to ensure feasibility and safety. Grounding is one of the important aspects in an electrical system to distribute unwanted current errors into the ground. Grounding design in an electrical system requires several important data such as soil resistivity values, the number of rods used, and the area of the installation. These data are used as input to calculate the actual design potential value with the permissible potential tolerance value starting from Ground Potential Rise (GPR), mesh, step, and touch potential. The grounding installation area plan is carried out in an area of in the form of a square or rectangle with a sandy lithology with an average resistivity value of and a clay area with an average value of . Another plan is carried out using a grid design with rods and without using rods. The rectangular sand area with a grid installation design using rods generally produces the smallest design potential value, namely a GPR value of , a mesh value of , and a step value of . The square clay area with a grid installation design without using rods generally produces the largest design potential value, namely a GPR value of , a mesh value of , and a step value of . The main factor that most influences the determination of the grounding design potential value is the soil resistivity value and the lithology of the installation area as evidenced by the difference in the measured potential design value which is quite significant. However, the overall design plan in this study produces a safe and feasible conclusion as evidenced by all design value acquisitions being less than the tolerance limit set in the case of a human weight of and such as a step potential of and a touch potential of .

Characterization Coal of The Warukin Formation in Kananai Village, South Barito, Central Kalimantan, Indonesia Arica Nefia; Manek, Emanuel Grace
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 1 (2026): Article in Press - JGEET Vol 11 No 01 : March (2026)
Publisher : UIR PRESS

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This research was conducted to identify geological conditions and the influence of maceral composition on the quality and rank of coal in the study area, which is divided into four rock units. The method used is surface geological mapping to describe the local geological conditions, as well as laboratory analysis which includes maceral analysis, vitrinite reflectance, proximate, and calorific value. The focus of the research is on the unit bedding of mudstone and sandstone with Coal (Warukin Formation) which is a coal-bearing unit. The results of the analysis show that the coal in the study area has the highest rank with an average vitrinite reflectance value (Rv%) of 0.55, the calorific value of 6896 cal/gr, and coal rank is included in the high volatile bituminous C category.

Characteristic of Mineral Alteration of Geothermal in Endut Mount Based on Petrography, Spectra, XRD, and MeB methods Patonah, Aton; Ramadhani, Rifqi Fadhil; Nurdin, Nizar M
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 1 (2026): Article in Press - JGEET Vol 11 No 01 : March (2026)
Publisher : UIR PRESS

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Endut Mount is one of the geothermal prospect locations in Indonesia. In order to optimize the geothermal potential of the research area, it is necessary to conduct research on geothermal characteristics. One such study is the examination of altered minerals in geothermal manifestations. The primary objective of this research is to conduct alteration investigations utilizing coring data obtained from the drilling of Well 1 by petrography, MeB, Spectra, and XRD method approaches. The result of the research shows that the lithology of this Well is a product of Endut Mount activity, with an intensity ranging from medium to strong. The lithology is composed of altered tuff and altered andesite breccia, which are a product of the Pleistocene period, and altered volcanic breccia and altered tuff breccia, which are a product of the Miocene period. This lithology is based on the oldest to the youngest succession. The alteration assemblages in Well 1 are classified into two zones based on the assemblage of alteration minerals: the illite-chlorite±epidote zone, which is located at a depth of 9.7– 40.9 MD, and the smectite-sericite-chlorite-epidote zone, which is located at a depth of 40.9 – 111.15 MD. The type of alteration in Well 1 is propylitic, with a neutral pH and a temperature range of 200oC to 300oC, as indicated by the mineral composition and alteration zone. This alteration zone has the potential to function as a reservoir zone.

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Adi Suryadi

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Home Page

OAI Link

Editorial Team

Contact

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Google Scholar

Contact Name Adi Suryadi

Contact Email adisuryadi@eng.uir.ac.id

Phone +62822 8389 6947

Journal Mail Official jgeet@journal.uir.ac.id

Editorial Address Jl. Kaharuddin Nasution No 113 Perhentian Marpoyan, Pekanbaru, Riau 28284

Location Kota pekanbaru, Riau INDONESIA

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Contact Name
Adi Suryadi

Contact Email
adisuryadi@eng.uir.ac.id

Phone
+62822 8389 6947

Journal Mail Official
jgeet@journal.uir.ac.id

Editorial Address
Jl. Kaharuddin Nasution No 113 Perhentian Marpoyan, Pekanbaru, Riau 28284

Location
Kota pekanbaru,

Riau

INDONESIA