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PENGARUH DEBIT ALIRAN TERHADAP SEDIMENTASI DI SUNGAI LEMATANG KABUPATEN LAHAT Sri Martini, RA; Bahri, Zainul; Miranda, Ade Tricia
Bearing : Jurnal Penelitian dan Kajian Teknik Sipil Vol 6, No 3 (2020): Bearing : Jurnal Penelitian dan Kajian Teknik Sipil
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jbearing.2841202063

Abstract

Sedimentation that occurred in the Lematang River in Lahat Regency was caused by river bank erosion, construction activities, and household waste brought by the flow discharge. The flow of the Lematang river will certainly affect the amount of sedimentation that will occur in the Lematang river.Based on the test results of the analysis of sediment sample filters, the results obtained d50 = 0.425 mm, and the results of research on the river cross-section with the aim to calculate the volume of base sediment sediment / bed load that occurs by flowing Lematang river flow obtained H = 0.41 m, B = 0 , 41 m, V = 2,650 m / sec.Based on the results of the analysis of the influence of flow discharge on sedimentation in the Lematang River, Lahat Regency, it is known that the type of bed load sediment in the Lematang River is poorly graded sand with large sediment transport carried by the flow discharge in the study segment of 0.022 (m3 / sec) with the duboy's method and 0.0000004 (kg / sec / m) with the shield's method, so the sediment volume for the next one year is 693,792 (m3 / sec) m for the duboy's method and 126,144 (kg / sec / m) for the shield's method .
PENGARUH PEMASANGAN TRASHBOOM TERHADAP KECEPATAN ALIRAN DI SUBDAS BENDUNG Miranda, Ade Tricia
Bearing : Jurnal Penelitian dan Kajian Teknik Sipil Vol 8, No 2 (2023): Bearing : Jurnal Penelitian dan Kajian Teknik Sipil
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jbearing.v8i2.7842

Abstract

The large amount of rubbish in the river flow in the Bendung sub-basin has prompted the government to create an innovation to deal with this problem. This innovation is the installation of trash booms at critical points. However, the installation of the trash boom is thought to slow down the flow downstream, causing a delay in the time for the river water level to recede. After conducting a comparative analysis of river flow velocity using a current meter, it was found that there was a 34% decrease in flow velocity in the downstream part of the river, where the first flow velocity was 0.29993 m/s, decreasing by 0.10099 m/s to become 0.19894 m/s downstream after the trash boom installation point.
Analisa Kinerja Ruas Jalan Inspektur Yazid Kabupaten Lahat Sarwandy, M. Hijrah Agung; Agustini, Marice; Miranda, Ade Tricia; Malvariansyah, Osa
Bearing : Jurnal Penelitian dan Kajian Teknik Sipil Vol 10, No 1 (2025): Bearing : Jurnal Penelitian dan Kajian Teknik Sipil
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jbearing.v10i1.9920

Abstract

Inspector Yazid Road is one of the important routes often used by vehicles in Lahat District, Lahat Regency. Especially in the lower market area of Lahat, various problems often arise in traffic conditions. Activities in the market have a major impact on the increasing number of daily activities and are one of the main factors causing high traffic volumes. Various side obstacles also worsen the performance of the road section. Referring to the problems that have been mentioned, the author tried to conduct a study to assess and analyze the performance of the Inspector Yazid road section using the 2023 Indonesian Road Capacity Guidelines (PKJI). The data collected included road geometry, vehicle flow, side obstacles, and population in Lahat Regency. The data was then analyzed based on the 2023 Indonesian Road Capacity Guidelines. The results of the study showed that peak times occurred on Monday to Friday between 16.00 and 17.00 WIB, with a vehicle volume reaching 1537 smp/hour, side obstacles 1122 kej/hour, and a capacity of 1837 smp/hour. The free flow speed was recorded at 49.92 km/h, travel speed at 13.64 km/h, and the degree of saturation at 0.84, which indicates that traffic on Jalan Inspector Yazid is in an unstable condition and is almost approaching the maximum capacity limit.