Putri, Klarissa Ardilia (2024) Visualisasi 3D Menggunakan Data Lidar dan Orthophoto untuk Analisis Dampak Banjir pada Jaringan Jalan (Studi Kasus : Jalan Tambak Mayor, Surabaya). Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Banjir di kota Surabaya semakin sering terjadi dan semakin parah dalam beberapa tahun terakhir, bahkan di saat musim kemarau sekalipun. Beberapa wilayah di kota Surabaya menjadi wilayah yang rawan banjir dan memberikan dampak yang signifikan terhadap jaringan jalan dalam jangka pendek maupun jangka panjang. Oleh karena itu, perlu dilakukan analisis dampak banjir terhadap jalan raya sebagai upaya mitigasi bencana. Salah satu teknologi terbaru yang dapat dikembangkan adalah pemodelan tiga dimensi genangan banjir. Penelitian ini melibatkan pemodelan tiga dimensi bangunan dan genangan banjir menggunakan LiDAR dan data Orthophoto. Dari hasil pengolahan data foto udara, diperoleh nilai ketelitian RMSE horizontal sebesar 0,0851 m dan nilai RMSE vertikal sebesar 0,1294 m. Ketelitian CE90 adalah 0,1294 m dan LE90 adalah 0,2135 m. Hasil pengolahan data foto udara juga menunjukkan nilai ketelitian GSD sebesar 3.18 cm/piksel, yang memenuhi standar output peta dasar RBI skala 1:1.000 pada kelas 2 dan mendekati standar pada kelas 1. Data LiDAR yang dimasukkan ke dalam pemodelan tiga dimensi berhasil membuat 4801 model bangunan 3D. Namun, dalam pemodelan genangan banjir menggunakan metode steady flow HEC-RAS, terdapat kendala karena spesifikasi yang kurang terperinci pada energy gradient (EG) slope untuk distribusi aliran sepanjang garis batas (hulu). Ini mengakibatkan tidak dapat dilakukannya pemodelan banjir 3D. Kawasan Jalan Tambak Mayor dan beberapa kawasan permukiman lainnya seperti Jalan Asem Mulya dan Jalan Tambak Baru sering mengalami genangan banjir. Genangan banjir di Jalan Tambak Mayor memiliki dampak serius terhadap infrastruktur jalan dan masyarakat, dengan kriteria kerugian yang tinggi. Oleh karena itu, tindakan pencegahan dan mitigasi dampak banjir perlu direncanakan secara cermat untuk melindungi infrastruktur dan keselamatan masyarakat.
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Flooding in Surabaya has become increasingly frequent and severe in recent years, even during the dry season. Several areas in Surabaya are prone to flooding and have significant impacts on the road network both in the short and long term. Therefore, an analysis of the impact of floods on highways is needed as a disaster mitigation effort. One of the latest technologies that can be developed is three-dimensional flood modeling. This research involves three-dimensional modeling of buildings and flood inundation using LiDAR and Orthophoto data. From the aerial photo data processing results, horizontal RMSE accuracy values of 0.0851 m and vertical RMSE values of 0.1294 m were obtained. The CE90 accuracy is 0.1294 m and the LE90 accuracy is 0.2135 m. The aerial photo data processing results also show a GSD accuracy value of 3.18 cm/pixel, which meets the RBI basic map output standard of 1:1,000 scale at class 2 and approaches the standard at class 1. The LiDAR data incorporated into the three-dimensional modeling successfully produced 4801 3D building models. However, in flood inundation modeling using the steady flow HEC-RAS method, there are constraints due to less detailed specifications in the energy gradient (EG) slope for distributing flow along the upstream boundary lines. This results in the inability to perform three-dimensional flood modeling. Areas such as Jalan Tambak Mayor and several residential areas like Jalan Asem Mulya and Jalan Tambak Baru often experience flooding. Flooding in Jalan Tambak Mayor has serious impacts on road infrastructure and communities, with high loss criteria. Therefore, prevention and mitigation measures need to be carefully planned to protect infrastructure and public safety
Item Type: | Thesis (Masters) |
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Additional Information: | RTG 526.982 KLA v 2024 |
Uncontrolled Keywords: | Banjir, Dampak, Genangan, Jaringan Jalan, Pemodelan 3D, 3D Modeling, Flood, Flood Water, Road Network, Risk |
Subjects: | T Technology > T Technology (General) > T385 Visualization--Technique T Technology > TR Photography > TR810 Aerial photography |
Divisions: | Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geomatics Engineering > 29101-(S2) Master Thesis |
Depositing User: | Klarissa Ardilia Putri |
Date Deposited: | 12 Feb 2024 00:58 |
Last Modified: | 21 Nov 2024 07:41 |
URI: | http://repository.its.ac.id/id/eprint/106768 |
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