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All Journal Transmisi: Jurnal Ilmiah Teknik Elektro JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang ELKHA : Jurnal Teknik Elektro Jurnal Teknik Sipil Jurnal INKOM REKA ELKOMIKA Jurnal Teknik Elektro Jurnal Informatika dan Teknik Elektro Terapan ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Arabiyatuna : Jurnal Bahasa Arab Jurnal Borneo Saintek Jurnal Pengabdian kepada Masyarakat Nusantara REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Emitor: Jurnal Teknik Elektro
RUSTAMAJI RUSTAMAJI
Jurusan Teknik Elektro Institut Teknologi Nasional Bandung
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Failure Study of Concrete Pile Structures on Riverbanks in Singkawang Raihan, Nabila Nur; Priadi, Eka; Rustamaji, Rustamaji
Jurnal Teknik Sipil Vol 25, No 1 (2025): Vol 25, No 1 (2025): JURNAL TEKNIK SIPIL EDISI FEBRUARI 2025
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v25i1.86536

Abstract

Urban infrastructure development often faces geotechnical challenges, especially around rivers, where concrete piles are used to reinforce riverbanks. The stability of concrete piles is highly dependent on proper planning, construction, and maintenance, which is influenced by the quality of materials, construction methods, and environmental conditions. This study aims to determine the value of embedment depth (D) in concrete piles under normal conditions and when bearing embankment loads. The research was conducted on sheet piles on both sides of the river between Jalan Alianyang and Jalan Tani, Singkawang. Primary data used were the field and laboratory test results, including testing the physical and mechanical properties of the soil, while secondary data were obtained from the Regional Development Planning Agency (BAPEDDA). The results showed that the 8.577 m long sheet pile had an embedment depth (D) value of 4.917 m under normal conditions. However, the sheet pile collapsed when it withstood the embankment load of 65.374 kN/m ² due to dredging using an excavator. Based on the analysis, the sheet pile that can withstand the load requires a length of 12.555 m with an embedment depth (D) of 8.895 m.
ANALYSIS OF SLOPE STABILITY DUE TO ILLEGAL GOLD MINING IN BENGKAYANG REGENCY Saputra, Andrianus; Priadi, Eka; Rustamaji, Rustamaji
Jurnal Teknik Sipil Vol 24, No 1 (2024): Vol 24, No 1 (2024): JURNAL TEKNIK SIPIL EDISI FEBRUARI 2024
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v24i1.76179

Abstract

Illegal gold mining is extracting gold without a formal license from the government or competent authority. It presents a significant environmental and geological challenge in Bengkayang Regency, Indonesia. This practice, carried out without proper authorization or adherence to safety regulations, is recognized as a significant cause of slope instability in the area.This study analyzes slope stability from unlicensed gold mining in Kinande Village, Bengkayang Regency. It uses manual Fellenius calculations and Geo Studio/Geo Slope 2023 software to determine the Safety Factor (SF) for potential landslides, assuming circular landslide planes are unaffected by earthquakes.Laboratory tests revealed varying soil types and properties at these points, impacting shear strength and slope stability. Loamy soils exhibit high cohesion but low internal friction, making them susceptible to instability. Sandy soils lack cohesion and rely on particle friction. Shear strength parameters like cohesion (c) and internal friction angle (φ) are critical in assessing slope stability. The study employed the Fellenius method and Geo Studio 2023 software to analyze slope stability, with safety factor (SF) results indicating potential hazards. Mining in plain areas showed favorable SF values (1.5), suggesting activity safety. Conversely, mining in mountainous and watercourse areas exhibited lower SF values (1.5), indicating instability and safety risks. Recommendations include stratified mining practices to maintain stable slopes and ensure miner safety. This research contributes to understanding geohazards and proposes measures for enhanced safety, environmental sustainability, and regulatory governance in mining areas. Understanding and analyzing these factors are crucial for the stability and safety of geotechnical projects, ensuring balanced shear stress and shear strength for slope stability.
Co-Authors Adhari, Aldi Aditia, Candyda Renny Andrianus Saputra Anhar Anhar ARSYAD RAMADHAN DARLIS DWI ARYANTA Dwi Putra Nugraha Eka Priadi Elan Djaelani, Elan Elvira Elvira Fauziah, Dini FEBRIAN HADIATNA Fuady, Ghaniyman Hakim, Arief Shubhan Kania Sawitri Latif, Mochamad Fazri Abdul LEONARD TAMPUBOLON LITA LIDYAWATI Nana Subarna, Nana Niken Syafitri Nur Hidayat, Wahyu PAULINE RAHMIATI, PAULINE Raihan, Nabila Nur Ramdhani, Teguh Rifki, Muh Riza Nurlaila RIZKI HADIANSYAH, RIZKI Rudi Gunawan SABAT ANWARI Sandakila, Shieren Dikah Aprilia SAPUTRA, NOFIARDIMAN SARAH PERMATASARI, SARAH Siswanto, Wahyu Dwi Sitepu, Ray Hapri SOLIHIN SUPARMAN, SOLIHIN SYAHRIAL SYAHRIAL Waluyo Waluyo Widura, Andre