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All Journal Jurnal Ilmiah Poli Rekayasa Jurnal Teknik Sipil dan Perencanaan JURNAL TEKNIK SIPIL ITP ISSN 2354-8452 Jurnal Ilmiah Rekayasa Sipil Teknomekanik Jurnal Inovasi Pengabdian dan Pemberdayaan Masyarakat

Dalrino Dalrino

Politeknik Negeri Padang

Author-ID : 248916

Humanities Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Mechanical Engineering Public Health Social Sciences

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Scour Depth Estimation on Abutment With HEC RAS and Some Empirical Equation Indra Agus; Munafri Alwys; Wisafri Wisafri; Dalrino Dalrino; Noftar Yolanda; Welfi yani
Jurnal Ilmiah Rekayasa Sipil Vol 17 No 1 (2020): April 2020
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Toe Scour around abutment will be very dangerous and cause loss of stability on the bridge. The case of structure failure on Batang Kalu bridge in Korong Pasa Usang Nagari Kayu Tanam, Padang Pariaman Regency on Monday (10 December 2018) is a clear example of toe scouring. A case study of toe scour was on the Batang Kalu River bridge structure has been carried out. Rainfall data closest to the study location, Kandang Empat Station was used to minimize the errors in the calculation of flood discharge design. Numerical modeling with HEC RAS and scouring estimation with some empiric equation was conducted to predicting scour depth on abutment. Simulation results show scour depth results to an average of 2.731 m and close to the scour depth that occurred in the field (2.83 m). Results showed that the local scouring in the Batang Kalu River bridge structure can be suspected as the influence of the increasing river steepness. Discharge that is triggered by heavy rain with a long duration and increased river flow velocity due to steepness has the potential to create a very intense scouring. Increasing of steepness may have been caused by sand mining activities in the upper reaches. Further studies are needed to see the potential slope changes due to exploitation in the Batang Kalu River upper reaches

Analisis Kapasitas Penampang Sungai Batang Mahat Terhadap Besaran Debit Banjir Menggunakan Pendekatan Model Matematik Dalrino, Dalrino; Sadtim, Sadtim; Hartati, Hartati; Agus, Indra
Jurnal Ilmiah Rekayasa Sipil Vol 15 No 2 (2018): Oktober 2018
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Batang Mahat watershed has a total area of 772.87 km2 with a total length of the main rivers around 44.06 km. With the topographic condition on the upstream side was a mountainous terrain and steep slope relatively into downstream. The problem was can be classified as river siltation, narrowing of the river, and riverbank erosion that has caused flood and threaten a public facilities. Numerical simulations using the application of the HEC RAS model were conducted to determine the capability of the river storage capacity into various discharge values. The results of the analysis show that with the discharge condition Q2 there has been flood caused by the high surface elevation of water that was overtopping of the left and right embankments elevation at the upstream and midstream areas. The water surface elevation will increase with the increasing of flood discharge. River normalization efforts with additional depth and widening of river channel were recommended.

Evaluasi Kapasitas Eksisting Sungai Batang Mangor di Hulu Bendung Ladang Laweh Dengan Peningkatan Debit Banjir Rencana 25 Tahun Hartati, Hartati; Dalrino, Dalrino; Sari, Desnila; Mafriyal, Mafriyal; Hanwar, Suhendrik; Sadtim, Sadtim; Desvani, Maulia; Putri, Nadhia Hanifah
Jurnal Ilmiah Rekayasa Sipil Vol 21 No 2 (2024): Oktober 2024
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jirs.v21i2.1611

Ladang Laweh Irrigation District Dam is located in Sicincin nagari, Padang Pariaman Regency with an irrigation service area of 1,140 Ha. The Ladang Laweh Irrigation Area weir receives flow from the Batang Mangor river which is included in the Batang Mangor watershed. On September 22, 2021 a flood occurred on September 22, 2021 resulting in an overflow with a height of 2.5 m above the lighthouse with an estimated discharge of 141.946 m3 /dt resulting in runoff flow in the area upstream of the bending. Analysis of the capacity of the existing river upstream of the weir was carried out with a 25-year plan flood discharge. Modeling is done by analyzing 15 years of rain data and catchment area starting from the location point of the weir upstream. The validation results under full bank capacity conditions obtained the closest match to the theoretical flood discharge value of the Nakayasu method. The simulation results show that the existing cross section of segments P1 to P19 at the Korong Gadang location is inundated during flood events with river capacity in several locations exceeding the maximum capacity. The results also provide recommendations for flood management by suggesting the addition of river embankments at locations that experience inundation.

Co-Authors -, Hartati - Aguskamar Aguskamar Desmon Hamid Desvani, Maulia Dila Pertiwi Dwina Archenita Elvi Roza Syofyan Hartati Hartati Indra Agus Indra Agus Junaidi Junaidi Karuniadi Satrijo Utomo M. Iqbal Iqbal Mafriyal Mafriyal Mafriyal Mafriyal Mas Mera Melia Santi Mukhlis Mukhlis Munafri Alwys Noftar Yolanda Putri, Nadhia Hanifah Ridwan, Ridwan Sadtim Sadtim Sari, Desnila Satwarnirat Satwarnirat Suhendrik Hanwar Totoh Andayono Welfi yani Wisafri Wisafri Yurisman Yurisman

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