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All Journal Sainstek Jurnal Teknik AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat FROPIL (Forum Profesional Teknik Sipil) Reswara: Jurnal Pengabdian Kepada Masyarakat Jurnal Sibermas (Sinergi Pemberdayaan Masyarakat) BIOCHEPHY: Journal of Science Education Jurnal Pijar MIPA Composite Journal Journal of Infrastructure Planning and Engineering Indonesian Journal of Fundamental Sciences Jurnal Natural JAGE Jurnal Manusia dan Lingkungan QOSIM: Jurnal Pendidikan, Sosial & Humaniora Journal of Applied Civil and Environmental Engineering (JACEE)
Indriati Martha Patuti
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SUSEPTIBILITAS MINERAL MAGNETIK PADA SEDIMEN VERTIKAL DANAU LIMBOTO DI AREA PERTANIAN DAN PEMUKIMAN Rahim, Niarti; Yunginger, Raghel; Patuti, Indriati Martha; Gafur, Nurfitri Abdul; Supu, Idawaty; Kurniasari, Septiana; Setiawan, Dewa Gede Eka; Jahja, Mohamad; Demulawa, Meilan
BIOCHEPHY: Journal of Science Education Vol. 5 No. 1 (2025)
Publisher : MO.RI Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52562/biochephy.v5i1.1501

Abstract

Danau Limboto telah mengalami degradasi yang sangat signifikan yang disebabkan di antaranya adalah tingginya pasokan sedimen dari sungai sebagai inlet danau yang menyebabkan menurunnya fungsi danau baik untuk sektor ekonomi, pariwisata maupun untuk penyeimbang sistem ekologi. Oleh karena itu diperlukan solusi untuk mengendalikan laju sedimentasi di antaranya dengan menganalisis suseptibilitas agar dapat memahami kerentanan terhadap faktor-faktor yang menyebabkan kerusakan danau, yang berdampak negatif terhadap fungsinya. Analisis suseptibilitas pada penelitian-penelitian sebelumnya hanya menganalisis sedimen terhadap permukaan. Sehingga tujuan penelitian ini menganalisis suseptibilitas magnetik pada sedimen vertikal Danau Limboto khususnya di area pertanian dan pemukiman yang sekaligus sebagai area sempadan danau. Metode penelitian ini menggunakan survei dan analisis laboratorium dengan metode kemagnetan batuan pada parameter suseptibilitas dengan menggunakan alat Bartington MS2B yang berkerja pada dua frekuensi. Sampel sedimen tidak melalui proses preparasi tetapi langsung dimasukan ke dalam holder. Hasil penelitian menunjukkan nilai suseptibilitas magnetik berkisar antara 13,4x10-8m3kg-1 hingga 807x10-8m3kg-1. Sementara itu persentase suseptibilitas magnetik bergantung frekuensi (?FD%) berkisar antara 0,161% hingga 1,87% dengan rata-rata 0,903% yang terukur pada 20 sampel. Terdapat semua sampel mengandung mineral ferimagnetik. Penelitian ini dapat memberikan informasi tentang proses-proses fisik dan lingkungan yang mempengaruhi sedimentasi, menjadi penanda sedimen yang dikontrol oleh antropogenik dan litogenik yang masuk ke Danau Limboto.
Analisis Besaran Erosi dan Stabilitas Lereng dengan Perkuatan Soil Nailing Balu, Rasyid; Patuti, Indriati Martha; Achmad, Fadly
Jurnal Teknik Vol 23 No 1 (2025): Jurnal Teknik
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37031/jt.v23i1.614

Abstract

The Gorontalo Outer Ring Road (GORR), with a length of 45.3 km, is a road constructed by cutting through the foot of slopes, posing a potential risk of landslides. Land-use changes on the slopes have been utilized by local residents for agricultural purposes and tourist attractions. This, of course, can affect the stability of the slopes surrounding the road. Therefore, this study aims to determine the magnitude of erosion and slope stability along the Gorontalo Outer Ring Road. In this study, erosion analysis was conducted using the USLE (Universal Soil Loss Equation) method, while slope stability analysis – both natural and reinforced with soil nailing – was performed using the Bishop method with the aid of Geo5 software. Based on the research results, the erosion analysis using the USLE method found that the average erosion rate on the northern slope is 79.77 tons/year, while the average erosion rate on the southern slope is 25.27 tons/year. The slope safety factor analysis shows that the southern slope under seismic load has a safety factor (FK) of 0.78, while the northern slope under seismic load has a safety factor (FK) of 0.66. Slope safety factor analysis with soil nailing reveals that the southern slope under seismic load has a safety factor (FK) of 1.87, and the northern slope has a safety factor (FK) of 1.73. Based on the analysis results, the slopes meet the required standards, with FK > 1.11 in accordance with SNI 8460:2017.
TINJAUAN KESTABILAN PERKUATAN LERENG MENGGUNAKAN DINDING KANTILEVER DAN DINDING GRAVITASI Eka Liani, Annisa; Patuti, Indriati Martha; Bahsuan, Rifadli
Composite Journal Vol. 1 No. 1 (2021): Composite Journal
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (468.339 KB) | DOI: 10.37905/cj.v1i1.11

Abstract

Parts of Gorontalo are hills and mountains close to community settlements, which are prone to landslides. To do a research on literature review that analyzes slope reinforcement models, which will be taken into consideration for slope improvement steps in Gorontalo. Slope reinforcement includes retaining walls, gravity walls, cantilever walls and crib walls. This research discusses slope reinforcement models and their stability behavior analysis. Secondary data is in the form of research journals on slope reinforcement models. Calculation data that will be used as experimental data for modeling other retrofitting walls are obtained from the results of research from one of the reviewed journals, namely multilevel gravity walls. The wall that will be analyzed is the retaining wall of a multilevel cantilever type of wall. Analysis of active soil pressure using the Rankine method and slope stability analysis using the slice method which is carried out with the help of 2D Slide software. Based on the results of the stability analysis of slope reinforcement with the selection of stratified cantilever wall reinforcement, the value of the safety factor against sliding (Fgs) is 1.63>1.5, the safety factor against overturning (Fgl) is 2.44>2.0, the safety factor against the collapse of carrying capacity (F) is 8.49>3.0, and the global safety factor value is 1.56>1.5. The value of the safety factor for shifting and rolling has decreased by 1% and 20% respectively compared to the gravitational wall. In the wall bearing capacity, there was an increase of 31%. Changes that occur in the safety factor in cantilevered walls are caused by changing factors in the dimensions of the walls which affect the strength of the structure in the soil holding force and the type of working principle of the walls. As for the global slope stability analyzed, there was a decrease in the safety factor by 5% after changing the type of reinforcement, but it showed that the slope was still stable, because the cantilevered wall type has a slender front wall dimension compared to the gravity wall which is more resistant to the risk of lateral slope movement.
MIKRO ZONASI RESPON SPEKTRUM GEMPA DI KABUPATEN GORONTALO UTARA UNTUK KEBUTUHAN DESAIN BANGUNAN TAHAN GEMPA Aldo, Rivaldo Inaku; Achmad, Fadly; Patuti, Indriati Martha
Composite Journal Vol. 2 No. 2 (2022): Composite Journal
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/cj.v2i2.51

Abstract

The issuance of SNI 1726:2019 regarding the response of the earthquake spectrum in Indonesia has not accommodated districts and sub-districts. The distribution of values on the zoning map for Indonesia is only divided by province, including Gorontalo. Gorontalo province is included in the high-risk zone because its soil motion parameter Ss is maroon with a value of 1.2–1.5g, while the ground motion S1 parameter is light brown with a constant acceleration spectrum of 60% g, Thus, it is necessary to divide the micro-scale map of the earthquake response spectrum zonation. This research aimed to analyze the value of the earthquake spectrum created with a zoning micro map in Gorontalo Utara District. This research is expected to be an initial reference in planning for the earthquake-resilient building, particularly in Gorontalo Utara District. The object of research is located in Gorontalo Utara District. This research only used secondary data obtained from several agencies, namely, BPJN Gorontalo and drilling service companies in Gorontalo Province. The secondary data used is the result of SPT (Standard Penetration Test) driling. Preparation of spectrum responses and zonation micro map referred to the guidelines of SNI 1726:2019 and the QGIS learning module. The data analyzed are based on the N-SPT data, which previously had been processed. The data obtained were processed to obtain the value that became the goal of this research by correcting the N-SPT (Standard Penetration Test) data, making the earthquake response spectrum plan, and making the response spectrum using QGIS 3.16. Gorontalo Utara District is classified as a soft-to-moderate site with an value of 9-37. The short period bedrock acceleration value SS is 1.49-2.33g. When viewed by color, Gorontalo Utara District is including in maroon to purple. The value of 1 second bedrock acceleration period S1 is 0.6-0.78. When viewed by color, it is including whitish orange to pink. The peak ground acceleration value PGA is 1.49-2.33g which, by color, is included in yellowish orange to red. The value of bedrock acceleration for a period of 1 second and the highest peak ground acceleration value occurred in Ilangata Village with SS values ​​of 2.12-2.33g, S1 0.74-0.78g and PGA values ​​0.79-0.85g. Meanwhile, the lowest value occurred in Deme 2 Village with an SS value of 1.49g, S1 0.6g and a PGA value of 0.6g. It shows that the higher the acceleration value, the greater the earthquake that occurs, and vice versa. Based on the results of this study, the acceleration value affects the estimation of the earthquake that occurs, or the acceleration is directly proportional to the force.
Model Sumur Resapan dan Drainase Untuk Penanggulangan Banjir Dengan Memanfaatkan Material Lokal Kadir, Yuliyanti; Patuti, Indriati Martha; Desei, Frice L.
Aksiologiya: Jurnal Pengabdian Kepada Masyarakat Vol 1 No 2 (2017): Agustus
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/aks.v1i2.835

Abstract

Flooding is a disaster that often occurs in the rainy season. The damage caused by this failure is not only material damage such as damage to houses, public facilities, and destruction of agricultural land, but also create disease outbreaks around the disaster site. One solution to reduce rainwater runoff needs to be made easy and practical recharge well model by utilizing local materials. The purpose of this research is the modeling of absorbing wells and drainage for prevention and control of flood hazard to achieve a healthy, safe, and comfortable. The research location is Lauwonu Village, Tilango District, Gorontalo Regency. Construction materials for modeling are local materials located around the site. The recharge wells are sized (2x1x1) m3 and (2x1,5x1) m3. If every household has a recharge well with a minimum volume of 2 m3, it will reduce rainfall runoff so that that flood disaster can be avoided.
Finite element analysis of bore pile foundation performance in silty soils of Gorontalo Indonesia Indriati Martha Patuti; Mohamad Anugrah Ahmad; Fadly Achmad
Journal of Infrastructure Planning and Engineering Vol. 5 No. 1 (2026)
Publisher : Master Program of Infrastructure and Environmental Engineering, Postgraduate Program, Warmadewa University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22225/jipe.5.1.2026.58-66

Abstract

The development of multi-story buildings on soft soils poses significant challenges in geotechnical design, particularly in tropical regions such as Gorontalo, Indonesia. The development of multi-story buildings on soft soils poses significant challenges in geotechnical design, particularly in tropical regions such as Gorontalo, Indonesia. This study investigates the behavior of bored pile foundations with varying diameters (0.60 m, 0.80 m, and 1.00 m) using the finite element method (FEM) via PLAXIS 2D. The simulation integrates in-situ soil investigation data, including SPT and laboratory tests, with a staged construction model to evaluate total deformation and stress distribution. The borehole profile revealed predominantly silty and silty sand layers with high compressibility and low bearing capacity, requiring precise analysis to mitigate settlement risks. Two loading stages were analyzed: (1) pile installation and (2) column load application with a maximum load of 3,363.3 kN per column. Results show that increasing pile diameter significantly reduces vertical displacement. During pile installation, the total deformation was 4.37 mm for the 0.6 m pile, 4.68 mm for the 0.8 m pile, and 4.19 mm for the 1.0 m pile. Under full column load, displacement reached 35.3 mm (0.6 m), 29.6 mm (0.8 m), and 29.4 mm (1.0 m), respectively. Total stress analyses revealed more concentrated stress beneath the smaller piles and more diffused stress in larger piles. The 1.0 m pile showed the best performance, but the 0.8 m pile offered a comparable result with better material efficiency. This study supports the use of FEM for foundation optimization and provides technical guidance for sustainable infrastructure in soft soil regions.
Vertical Sediment Drilling Technique in Fish-Pond Areas of Lake Limboto Muhlis Ali; Raghel Yunginger; Septiana Kurniasari; Indriati Martha Patuti; Idawati Supu; Nurfitri Abd Gafur; Mursalin Mursalin; Mohamad Jahja; Andi Indra Wulan Sari Ramadani
BIOCHEPHY: Journal of Science Education Vol. 6 No. 1 (2026)
Publisher : MO.RI Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52562/biochephy.v6i1.1906

Abstract

Lake Limboto in Gorontalo is an essential ecosystem for local communities, particularly fishermen, yet fish-pond activities have increased sedimentation and accelerated the lake's degradation. Effective conservation efforts require sediment-characterization analysis, including vertical sediment profiles in pond areas, which has been limited by the lack of appropriate drilling techniques. This study aims to evaluate a vertical sediment-sampling technique in fish-pond zones using a survey method and shallow drilling with an XY-1A spindle-type drilling machine at depths of 1–15 meters. The results indicate that drilling stability is strongly influenced by the structural integrity of the machine's support base, particularly due to water currents and waves in the lake. This drilling technique is recommended for sediment sampling in Lake Limboto, especially in pond areas, and contributes to the advancement of sediment-drilling methods in similar aquatic environments.
Karakteristik Litologi dan Zonasi Alterasi Hidrotermal Sistem Epitermal Sulfidasi Tinggi pada Daerah Pit X PT. J Resources Bolaang Mongondow Yunir Tulong; Indriati Martha Patuti; Ayub Pratama Aris
Journal of Applied Geoscience and Engineering Vol 5, No 1 : Juni 2026
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jage.v5i1.39825

Abstract

Pit X of PT J Resources Bolaang Mongondow is a mineral prospect area that exhibits geological characteristics associated with a high-sulphidation epithermal system. This study aims to identify the lithological characteristics and hydrothermal alteration zoning developed within the study area through the integration of geological mapping, petrographic analysis, and Analytical Spectral Device (ASD) spectral analysis. The results indicate that the study area is composed of four lithological units, namely diatreme breccia, tuff, volcanic dacite, and volcanic andesite. Geological structures are dominated by joints trending northwest–southeast to north–south, which act as pathways for hydrothermal fluid circulation and influence alteration distribution. Based on ASD and petrographic analyses, four hydrothermal alteration zones were identified: vuggy silica zone (±7%), massive silica zone (±29%), advanced argillic zone (±31%), and argillic zone (±33%). The alteration assemblages consist of alunite, pyrophyllite, dickite, kaolinite, illite, and smectite. The spatial distribution of these alteration zones reflects progressive changes in the physicochemical conditions of hydrothermal fluids from proximal to distal parts of the system. The occurrence of vuggy silica and advanced argillic alteration, together with characteristic alteration mineral assemblages, indicates the development of a high-sulphidation epithermal system within the study area. These findings provide important information regarding lithological characteristics and hydrothermal alteration patterns that can be utilized to support geological interpretation and mineral exploration in the area.
Teknik Pembuatan Paving Block Berbasis Sedimen Danau Limboto dengan Penguat Biochar Sekam Padi Yulistiana Datu; Raghel Yunginger; Andi Indra Wulan Sari Ramadani; Indriati Martha Patuti; Muh. Fachrul Latief; Nurfitri Abdul Gafur; Mulis Ali
Jurnal QOSIM : Jurnal Pendidikan, Sosial & Humaniora Vol 4 No 3 (2026): 2026
Publisher : Yayasan pendidikan dzurriyatul Quran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61104/jq.v4i3.8361

Abstract

Danau Limboto mengalami permasalahan sedimentasi yang signifikan akibat erosi daerah aliran sungai (DAS). Sedimen Danau Limboto (SDL) yang terakumulasi di dasar danau berupa material lempung halus yang selama ini belum dimanfaatkan secara optimal. Penelitian ini bertujuan untuk menjelaskan teknik pembuatan paving block berbasis Sedimen Danau Limboto (SDL) dengan penambahan biochar sekam padi 5%, 7,5% dan 10%. Tahapan penelitian meliputi pengambilan dan pengolahan sedimen, proses pirolisis sekam padi menjadi biochar, pencampuran, pencetakan paving block, serta perawatan paving block. Hasil penelitian menunjukkan bahwa nilai kuat tekan tertinggi diperoleh Formula 3 dengan variasi biochar 5% yaitu sebesar 7,25 MPa. Hal tersebut menunjukan bahwa Sedimen Danau Limboto (SDL) berpotensi digunakan sebagai bahan alternatif paving block, sedangkan biochar sekam padi berkontribusi terhadap karakteristik material yang lebih ramah lingkungan dan berpori. Teknik pembuatan yang tepat berpengaruh signifikan terhadap mutu paving block yang dihasilkan.
Analisis Rembesan Pada Tubuh Bendungan Bulango Ulu Menggunakan Software Slide 6.0 Nurul Nasira Alimu; Indriati Martha Patuti; Fadly Achmad
Indonesian Journal of Fundamental Sciences Vol 12, No 1 (2026)
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/ijfs.v12i1.88579

Abstract

Abstract. Setiap bendungan akan mengalami kebocoran atau rembesan, namun kebocoran atau rembesan tersebut tidak boleh melebihi batas rembesan yang diperbolehkan. Berdasarkan hal tersebut, maka perlu dilakukan analisis rembesan pada bendungan dengan mencari debit rembesan serta faktor keamanan piping. Lokasi pembangunan Bendungan Bulango Ulu terletak di Desa Tulo’a, Kecamatan Bulango Utara, Kabupaten Bone Bolango. Analisis rembesan dilakukan dengan menggunakan Software Slide 6.0. Berdasarkan hasil analisis rembesan pada berbagai kondisi muka air, yaitu Muka Air Normal (MAN), Muka Air Banjir (MAB), Muka Air Minimum (MAM), serta kondisi rapid drawdown, diperoleh debit sebesar 1,34 l/s, 1,57 l/s, 0,95 l/s, dan 1,39 l/s. Seluruh nilai debit rembesan yang diperoleh masih jauh lebih kecil dibandingkan debit izin sebesar 1% inflow, yaitu 177,80 l/s dan 0,05% tampungan waduk yaitu 486,69 l/s. Adapun faktor keamanan piping pada masing-masing kondisi tersebut yaitu 4,22, 3,16, 4,68, dan 3,63. Dengan demikian bendungan dinyatakan aman dari bahaya piping (FK ≥ 3 atau 4) Keywords: Rembesan, Bendungan Bulango Ulu, Slide 6.0, Metode Casagrande, Faktor Keamanan Piping.
Co-Authors abdul Djou Aldo, Rivaldo Inaku Andi Indra Wulan Sari Ramadani Aryati Alitu Ayub Pratama Aris Ayub Balu, Rasyid Desei, Frice Dewa Gede Eka Setiawan Eka Liani, Annisa Fadlan R Dua Fadly Achmad Fitryane Lihawa Frice L. Desei, Frice L. Gafur, Nurfitri Abdul HASAN, ELFIRAWATI Ishak Isa Jahja, Mohamad Komang Arya Utama Kurniasari, Septiana Latief, Muh Fachrul Marike Mahmud Masrurah, Zakia Meidji, Icha Untari Meilan Demulawa Mohamad Anugrah Ahmad Muhammad Rizki Ismail Muhammad Yunus Muhammad Zulkifli, Muhammad Muhlis Ali Mulis Ali Mursalin Nurfaika Nurfaika Nurfitri Abd Gafur Nurfitri Abdul Gafur Nurul Nasira Alimu Rahim, Niarti Rahmani Kadarningsih Ria Defriyanti Ali Rifadli Bahsuan Saphira Rofilah Mokoginta Siti Zulaikah Supu, Idawati Supu, Idawaty Tang, Bunga Tisen, Tisen Yulistiana Datu Yuliyanti Kadir Yunir Tulong