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All Journal West Science Nature and Technology Journal of Civil Engineering and Vocational Education
Asema, Fuji
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Civil Engineering, Building, Construction & Architecture Education Energy Engineering Environmental Science Transportation

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Volume Analysis of Mining Excavation Progress Using Unmanned Aerial Vehicle-Photogrammetry Method Susilo, Helik; Rahardion, Aqil; Bani, Martince Novianti; Cupasindi, Dyah Ayu Rahmawati; Aditya, Muhammad Tri; Asema, Fuji; Anggraini, Novita
CIVED Vol. 11 No. 3 (2024): September 2024
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v11i3.665

Abstract

In recent years, the use of unmanned aerial vehicles (UAVs) has become an alternative for topographic mapping, and this is called the UAV-Photogrammetry method. Topographic mapping in mining activities is carried out to determine the progress of actual volume of material taken. However, in general, topographic mapping is carried out using terrestrial survey methods. These methods require a long data acquisition time and a lot of personnel. This paper focuses on surveying the volume of mining progress using the UAV-Photogrammetry method and compares it with truck count volume data. The results of this study showed that the deviation in volume calculations using UAV-Photogrammetry method compared with truck count volume data in week I was 233 m3 or 0.654%, week II was 214 m3 or 0.151%, week III was 496 m3 or 0.840%, and week IV was 243 m3 or 0.210%. The results of the t-test showed that there was no significant difference between the volume calculation using the UAV-Photogrammetry method and truck count data, which means both measurement types produce statistically similar results.
Assessing the Correlation between Camera Angle and the Accuracy of Elevation Measurements Derived from UAV-Photogrammetry: - Susilo, Helik; Novianto, Dandung; Rahardianto, Trias; Cupasindi, Dyah Ayu Rahmawati; Subkhan, Muhamad Fajar; Supiyono; Asema, Fuji
CIVED Vol. 12 No. 1 (2025): March 2025
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v12i1.750

Abstract

Elevation measurement is essential for various applications, including construction engineering, monitoring land subsidence, maintaining infrastructure, etc. A conventional method for elevation measurement involves terrestrial surveying using a Total Station instrument. However, this method can be time-consuming and requires a considerable number of personnel. Unmanned Aerial Vehicle (UAV) photogrammetry method offers a more efficient solution for determining elevation. This method utilizes UAVs equipped with camera sensors to capture aerial photos. In this research, aerial photos were taken using three different camera angle configurations: nadir (90°), oblique (65°), and oblique (45°). The elevation points derived from the UAV photogrammetry data were compared with the elevation measured by the Total Station. The analysis showed that the nadir (90°) camera angle configuration had the lowest Root Mean Square Error (RMSE) at 0.0471 meters, followed by the oblique (65°) configuration with RMSE of 0.0508 meters, and the obliqu (45°) configuration with RMSE of 0.1399 meters. According to the t-test, the elevations derived using the UAV photogrammetry method were not significantly different from the elevations measured with the Total Station.
Assessing the Impact of Mesh Density on Safety Factor in 2D and 3D Finite Element Modeling: A Case Study of Landslide Mitigation with Corrugated Concrete Sheet Pile (CCSP) Rahmawati Cupasindy, Dyah Ayu; Sholeh, Moch.; Asema, Fuji; Anggraini, Novita; Susilo, Helik; Aditya, Muhammad Tri
West Science Nature and Technology Vol. 3 No. 03 (2025): West Science Nature and Technology
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/wsnt.v3i03.2284

Abstract

The problem of landslides in irrigation canal embankments often occurs in areas with soft and expansive soils that have low bearing capacity and are easily changed in volume due to fluctuations in water content. One of the main triggers is the rapid drawdown phenomenon that causes a sudden decrease in slope stability. In this study, slope stability analysis was conducted using the finite element method with PLAXIS 2D and PLAXIS 3D software. The main objective of the study was to evaluate the effect of mesh variation and soil model selection between Mohr-Coulomb Undrained A and Hardening Soil on Safety Factor (SF) value and slope settlement pattern. The reinforcement treatment analyzed was the use of Corrugated Concrete Sheet Pile (CCSP) installed on the side of the slope to improve stability. The results showed that the mesh variation affected the SF results and stress distribution patterns, especially in the 3D model. The Hardening Soil model produced more realistic deformation and SF predictions than the Mohr-Coulomb model. Thus, choosing the right soil model and mesh configuration is very influential in producing accurate analysis and can be used as a reference in the design of irrigation canal slope treatment.
Potensi Likuifaksi Berdasarkan Nilai N-SPT di Bandara Rokot Kepulauan Mentawai Asema, Fuji
CIVED Vol. 10 No. 2 (2023): June 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v10i2.407

Abstract

Likuifaksi adalah fenomena dimana tanah yang semula padat mengalami perubahan menjadi cair akibat peningkatan tekanan air pori pada saat getaran gempa bumi. Kepulauan Mentawai merupakan daerah yang sering terjadi gempa bumi dan tsunami. Kepulauan ini memiliki satu bandar udara merupakan pintu gerbang utama untuk mengunjungi Kepulauan Mentawai, yang terkenal dengan keindahan alamnya seperti pantai, ombak, dan kekayaan bawah lautnya. Oleh karena itu penting dilakukan analisis potensi likuifaksi pada bandara rokot mentawai. Analisis ini dilakukan dengan menggunakan data hasil uji N-SPT pada terminal penumpang dan bangunan operasi bandara Rokot Mentawai. Hasil analisis diperoleh bahwa potensi likuifaksi terjadi pada kedalaman <16m dengan nilai Safety Factor (SF) ≤1,0. Jika dihubungkan dengan evaluasi penurunan tanah selama terjadi gempa, maka dapat diketahui bahwa tanah yang mengalami likuifaksi pada titik BH01 dan BH02 memiliki nilai kerpatan relatif (Dr) antara 0 – 65% dengan kerapatan sangat lepas hingga sedang. Hal ini berarti bahwa tanah cenderung rentan terhadap likuifaksi karena selama gempa bumi berlangsung, rongga pori tanah akan terisi oleh air, tekanan air pori menjadi meningkat yang menyebabkan tanah menjadi jenuh dan berpotensi mengalami likuifaksi.Diharapkan hasil analisis potensi likuifaksi ini dapat memberikan kontribusi yang signifikan serta bisa menjadi pedoman dalam menghadapi potensi risiko likuifaksi terutama pada daerah yang rawan terhadap gempa bumi dan likuifaksi.
Analysis of Slope Stability Using Geotextile with The Limit Equilibrium Method in Gunung Sari, Batu Sholeh, Moch.; Cupasindy, Dyah Ayu Rahmawati; Anggraini, Novita; Asema, Fuji; Susilo, Helik
CIVED Vol. 11 No. 2 (2024): June 2024
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v11i2.608

Abstract

Gunung Sari Village, Batu City is a hilly mountainous area. Where the elevation contour of the land is at an altitude of ± 800 meters above sea level. Because of its hilly location, there are many steep slopes around the location. These slopes have the potential to experience landslides, considering that the rainfall in these locations is very high. Potential slopes with such conditions are suspected to have a safety factor (SF) < 1. For this reason, researchers are interested in analyzing the slopes on these slopes using the limit equilibrium method. In this study the method that will be used is to analyze the factor of safety in the existing conditions and the factor of safety after the slope is given geotextile reinforcement which will be modeled with the Geoslope/W 2012 application. The results of the safety factor analysis of existing conditions at cross 1 using the Geo Slope/W 2012 Program, the Bishop method, is 0.851, while for the Morgenstern method it is 0.961. Both methods show a safety factor value of less than 1 (F<1), which means the slope is unstable and has a high potential for landslides. The value of the safety factor with geotextile reinforcement for both methods has increased, making the slope more stable (F>1). The safety factor value for cross 1 of the Bishop method is 1.698 while for the Morgenstern method it is 1.702.
Co-Authors Cupasindi, Dyah Ayu Rahmawati Cupasindy, Dyah Ayu Rahmawati Dandung Novianto Helik Susilo Martince Novianti Bani Moch. Sholeh, Moch. Muhammad Tri Aditya Novita Anggraini Rahardianto, Trias Rahardion, Aqil Rahmawati Cupasindy, Dyah Ayu SUBKHAN, MUHAMAD FAJAR Supiyono .