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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

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.

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

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.

Analysis of Decreased Limestone Production on the Effect of Rainfall with the Linear Regression Method Aditya, Muhammad Tri; Susilo, Helik; Fanani, Yazid
West Science Interdisciplinary Studies Vol. 1 No. 10 (2023): West Science Interdisciplinary Studies
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/wsis.v1i10.334

Limestone mining is a quarry system mining . Its production is influenced by weather factors, especially rainfall. This study aimed at determining the mathematical model wich is able to correlate the influence of rainfall on production of limestone. In addition, it analyzed the correlation between rainfall and limestone production using linear regression method. There are four important steps in this research. The first step is to collect data production and production factors. The second step is to process the data into a mathematical model using linear regression. The third step is to test the result of the mathematical model with the statistical test method. Then the fourth step is to analyze the mathematical model that has met the statistical test results. The results showed that the best mathematical model was: Log P = 0.502 x LOG((JO X Pr) 1.99 x (CH)-0.001) + 0.0002. In conclusion, the effect of rainfall toward the production derivation was very low. Besides, operation hours and productivity also affected production derivation.

Evaluation of Production Capability of Transportation Equipment and Loading Equipment in Limestone Mining at PT X, South Sulawesi Aditya, Muhammad Tri; Arystianto, Deni Putra; Jayaputra, Harsalim Aimunandar; Susilo, Helik; Pratama, Gindang Rain
West Science Interdisciplinary Studies Vol. 2 No. 12 (2024): West Science Interdisciplinary Studies
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/wsis.v2i12.1505

This study focuses on the evaluation of the production capacity of loading and hauling equipment in limestone mining operations at PT. X, South Sulawesi Province. The selection of this topic is based on the importance of operational efficiency in limestone mining which has a direct impact on the productivity and sustainability of the cement industry. The main objectives of this study are to determine the actual production of loading and hauling equipment, determine the number of equipment needed to meet production targets and identify compatibility factors between mechanical equipment at the mining site. The methods used include field data collection involving measurement of cycle time and production capacity of loading and hauling equipment. The data obtained are then processed using statistical methods to ensure the accuracy of the results. Data analysis is carried out by considering variables such as work efficiency, cycle time, and equipment capacity. The results show that Kobelco SK 480 LC has the highest production capacity (509.34 tons/hour), followed by Komatsu PC 400 (448.25 tons/hour) and PC 300 (417.05 tons/hour). To achieve the Crusher production target of 1450 tons/hour, a combination of loading equipment and dump trucks with a compatibility factor between 0.87 and 0.92 is required, indicating potential for increased efficiency. It is recommended to improve maintenance of equipment and mining roads to optimize productivity.

Analysis of Decreased Limestone Production on the Effect of Rainfall with the Linear Regression Method Aditya, Muhammad Tri; Susilo, Helik; Fanani, Yazid
West Science Interdisciplinary Studies Vol. 1 No. 10 (2023): West Science Interdisciplinary Studies
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/wsis.v1i10.334

Limestone mining is a quarry system mining . Its production is influenced by weather factors, especially rainfall. This study aimed at determining the mathematical model wich is able to correlate the influence of rainfall on production of limestone. In addition, it analyzed the correlation between rainfall and limestone production using linear regression method. There are four important steps in this research. The first step is to collect data production and production factors. The second step is to process the data into a mathematical model using linear regression. The third step is to test the result of the mathematical model with the statistical test method. Then the fourth step is to analyze the mathematical model that has met the statistical test results. The results showed that the best mathematical model was: Log P = 0.502 x LOG((JO X Pr) 1.99 x (CH)-0.001) + 0.0002. In conclusion, the effect of rainfall toward the production derivation was very low. Besides, operation hours and productivity also affected production derivation.

Evaluation of Production Capability of Transportation Equipment and Loading Equipment in Limestone Mining at PT X, South Sulawesi Aditya, Muhammad Tri; Arystianto, Deni Putra; Jayaputra, Harsalim Aimunandar; Susilo, Helik; Pratama, Gindang Rain
West Science Interdisciplinary Studies Vol. 2 No. 12 (2024): West Science Interdisciplinary Studies
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/wsis.v2i12.1505

This study focuses on the evaluation of the production capacity of loading and hauling equipment in limestone mining operations at PT. X, South Sulawesi Province. The selection of this topic is based on the importance of operational efficiency in limestone mining which has a direct impact on the productivity and sustainability of the cement industry. The main objectives of this study are to determine the actual production of loading and hauling equipment, determine the number of equipment needed to meet production targets and identify compatibility factors between mechanical equipment at the mining site. The methods used include field data collection involving measurement of cycle time and production capacity of loading and hauling equipment. The data obtained are then processed using statistical methods to ensure the accuracy of the results. Data analysis is carried out by considering variables such as work efficiency, cycle time, and equipment capacity. The results show that Kobelco SK 480 LC has the highest production capacity (509.34 tons/hour), followed by Komatsu PC 400 (448.25 tons/hour) and PC 300 (417.05 tons/hour). To achieve the Crusher production target of 1450 tons/hour, a combination of loading equipment and dump trucks with a compatibility factor between 0.87 and 0.92 is required, indicating potential for increased efficiency. It is recommended to improve maintenance of equipment and mining roads to optimize productivity.

PEMODELAN 3D CANDI BADUT MENGGUNAKAN UAV FOTOGRAMETRI Bani, Martince Novianti; Fajarwati , Anisah Nur; Susilo , Helik; Yoganata, Yehezkiel Septian
Menara: Jurnal Teknik Sipil Vol. 21 No. 2 (2026): Menara : Jurnal Teknik Sipil
Publisher : Teknik Sipil, Fakultas Teknik Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jmenara.v21i2.62843

Pendokumentasian cagar budaya secara akurat merupakan langkah penting dalam upaya pelestarian dan analisis struktur bangunan bersejarah. Penelitian ini bertujuan untuk menghasilkan model tiga dimensi (3D) Candi Badut menggunakan teknologi Unmanned Aerial Vehicle (UAV) dan metode Structure from Motion (SfM) serta mengevaluasi tingkat akurasinya melalui perbandingan dengan pengukuran langsung di lapangan. Akuisisi data dilakukan menggunakan UAV dengan konfigurasi pemotretan oblique dan tingkat pertampalan tinggi untuk memperoleh citra yang optimal. Data citra kemudian diproses menggunakan perangkat lunak berbasis SfM untuk menghasilkan point cloud, mesh 3D, dan produk lainnya. Evaluasi akurasi dilakukan melalui analisis kesalahan geometrik dan uji statistik menggunakan uji t dua sampel. Hasil penelitian menunjukkan bahwa model 3D yang dihasilkan memiliki tingkat konsistensi tinggi, dengan nilai Root Mean Square Error (RMSE) sebesar 0,5629 meter. Selain itu, hasil uji t menunjukkan p-value sebesar 0,9844, yang menandakan tidak terdapat perbedaan signifikan antara pengukuran lapangan dan model 3D. Temuan ini mengonfirmasi bahwa UAV dengan teknik pengolahan data SfM mampu menyediakan representasi digital yang cukup akurat dan dapat diandalkan untuk dokumentasi, dengan harapan dapat digunakan untuk upaya konservasi cagar budaya Candi Badut. Pendekatan ini direkomendasikan sebagai teknik efektif dalam pemetaan dan pemodelan bangunan cagar budaya.

EVALUASI KERUSAKAN PERKERASAN JALAN PADA RUAS JALAN RAMBIPUJI – BALUNG KABUPATEN JEMBER Muh raja husein alfath -syawaludinsyah; Helik susilo
Jurnal Online Skripsi Manajemen Rekayasa Konstruksi (JOS-MRK) Vol. 7 No. 1 (2026): MARET 2026
Publisher : Jurusan Teknik Sipil Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jos-mrk.v7i1.9046

Infrastruktur jalan sebagai prasarana transportasi vital mendukung mobilitas masyarakat dan pertumbuhan sosial ekonomi wilayah. Kerusakan perkerasan jalan akibat intensitas lalu lintas tinggi berdampak pada keamanan, kenyamanan, dan efisiensi transportasi. Ruas Jalan Rambipuji-Balung Kabupaten Jember adalah jalan provinsi Kolektor Primer kelas II yang mengalami kerusakan parah akibat lalu lintas kendaraan berat, khususnya truk ODOL (Over Load Over Dimension). sehingga diperlukan evaluasi terhadap kondisi perkerasan untuk menentukan strategi penanganan tepat.. Penelitian ini bertujuan untuk menganalisis jenis kerusakan jalan, melakukan penilaian kondisi jalan, menentukan jenis penanganan yang tepat, merumuskan metode perbaikan jalan, dan menghitung Rencana Anggaran Biaya (RAB) yang dibutuhkan untuk perbaikan jalan tersebut. Metode penelitian yang digunakan meliputi analisis kerusakan jalan menggunakan sistem penilaian indeks kondisi perkerasan (IKP) dengan survei dimensi kerusakan di lapangan dengan ketentuan IKP.Hasil analisis menunjukkan jenis kerusakan jalan yang terjadi Yaitu : retak kulit buaya, retak blok, depresi, retak tepi, retak memanjang & retak melintang, tambalan, pengausan agregat, lubang dan pelapukan/pelepasan butir. Penilaian kondisi jalan menghasilkan kategori kondisi sangat baik sebesar 28%, baik sebesar 15%, sedang sebesar 21%, jelek sebesar 15%, parah sebesar 13%, sangat parah sebesar 7% dan hancur sebesar 1%. Rencana Anggaran Biaya (RAB) yang diperlukan untuk seluruh pekerjaan perbaikan jalan pada Ruas Jalan Rambipuji-Balung Kabupaten Jember adalah sebesar Rp 2,065,883,972,- (Dua miliar enam puluh lima juta delapan ratus delapan puluh tiga ribu rupiah).

PERENCANAAN SIMPANG TAK BERSINYAL PADA JL. ADE IRMA SURYANI, KAUMAN – JL. SARIF AL_QODRI KEC. KLOJEN KOTA MALANG. Fanny walex Wenda; Udi Subagiyo; Helik Susilo
Jurnal Online Skripsi Manajemen Rekayasa Konstruksi (JOS-MRK) Vol. 7 No. 2 (2026): JUNI 2026
Publisher : Jurusan Teknik Sipil Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jos-mrk.v7i2.9917

Persimpangan tak bersinyal Jl. Ade Irma Suryani, Kauman – Jl. Sarif Al_Qodri yang terletak pada Kecamatan klojen kota malang Provinsi Jawa Timur merupakan kawasan pusat pembelanjaan dan mengakibatkan banyaknya pengguna kendaraan yang melalui simpang tersebut. Oleh karena itu perlu dilakukan perenccanaan simpang tak bersinyal untuk mengurangi kemacetan pada persimpangan tersebut. Data yang digunakan pada perencanaan ini adalah data primer dan data sekunder. Data primer didapat dari pengukuran geometrik jalan dan survei lalu lintas yang dilakukan pada tanggal 21 Mei 2024, sedangkan data sekunder didapat dari badan Pusat Statistik (BPS) kota malang. Untuk pengolahan data menggunakan metode Manual Kapasitas Jalan Indonesia (MKJI) tahun 1997 Dari analisa kinerja simpang eksisting mendapatkan nilai tundaan C = 5,04 det/smp dan level of service LOS = A. Dari hasil analisa diperlukan alternatif penanganan simpang Bentuk penanganan simpang tak bersinyal dari jl,kyai hasyim tidak boleh belok kanan ke arah jl. Ade Irma barat dan dari jl. Al.qodri tidak boleh belok kanan ke jl. Ade Irma selatan dan kendaraan berat dilarang melintasi simpang tersebut. Berdasarkan hasil analisis didapatkan nilai tundaan simpang tak bersinyal sebesar 20,08 det/smp, dengan tingkat pelayanan adalah C.

Analysis of the Influence of Flight Altitude on the Accuracy of Elevation Derived from UAV-Photogrammetry Helik Susilo; Dandung Novianto; Trias Rahardianto; Muhamad Fajar Subkhan; Martince N Bani; Muhammad Tri Aditya
Jurnal Geosains West Science Vol 4 No 02 (2026): Jurnal Geosains West Science
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/jgws.v4i02.3398

Accurate elevation measurement is critical for applications such as construction engineering, land subsidence monitoring, and infrastructure management. Conventional terrestrial surveying using a Total Station provides reliable results but is labor intensive and time consuming. UAV-Photogrammetry offers a more efficient alternative by enabling rapid elevation estimation from aerial imagery acquired by camera equipped unmanned platforms. In this study, aerial photos were collected at three flight altitudes, 25 m, 35 m, and 45 m above ground level (AGL), and elevations derived from UAV-Photogrammetry processing were compared against Total Station measurements. The results demonstrate that imagery captured at 25 m AGL achieved the highest accuracy, with a Root Mean Square Error (RMSE) of 0.0313 m, followed by the 35 m AGL (RMSE = 0.0539 m) and 45 m AGL (RMSE = 0.1118 m). Statistical evaluation using a t-test indicated no significant differences between UAV-Photogrammetry elevations and those obtained from the Total Station.

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