Hasil Pencarian  ::  Simpan CSV :: Kembali

"Semarang adalah Ibukota Provinsi Jawa Tengah yang memegang peran penting dalam perkembangan ekonomi, sosial dan pemerintahan. Genangan banjir yang setiap tahun terjadi menjadi salah satu penghambat perkembangan daerah tersebut. Selain dari faktor topografi Kota Semarang yang memiliki elevasi yang datar dan rendah pada bagian utara yang berhadapan langsung dengan laut serta penurunan permukaan tanah yang terjadi setiap tahunnya membuat daerah ini sangat rentan terjadi banjir rob. Terdapat beberapa faktor penting yang memiliki andil besar, contohnya kenaikan curah hujan yang ekstrim, kelembapan tanah dan kapasitas pompa dari sistem polder. Tujuan dari penelitian ini adalah melakukan evaluasi genangan banjir pada peristiwa curah hujan ekstrim dengan mempertimbangkan faktor kelembapan tanah dan kinerja sistem pompa yang ada dan memberikan rekomendasi terhadap sistem pengendalian banjir yang ada. Terdapat 2 DAS yang dijadikan objek penelitian yaitu DAS Garang dan DAS Silandak. Simulasi dilakukan dengan menggunakan sebaran hujan yang terjadi di Semarang pada tnaggal 6 Februari 2021, serta 2 kondisi kelembapan tanah yaitu, AMC II dan AMC III dengan memodelkan kapasitas pompa yang ada pada sistem aliran tersebut. Permodelan dilakukan dengan bantuan ArcMap untuk pemetaan, HEC-HMS untuk permodelan hidrologi dan RAS MAPPER untuk permodelan hidrolika atau genangan, Pada hasil analisis kedua simulasi tersebut terlihat perbedaan debit puncak banjir sebanyak 20% pada outlet DAS Garang dan 1.61 % dan 2.23% pada kedua outlet DAS Silandak dan juga perbedaan daerah genangan maksimum seluas 0.6 km2 antara AMC II dan AMC III. Dalam rekomendasi kapasitas dilakukan peningkatan kapasitas sebanyak 2 kali lipat dari kondisi eksisting dengan target dapat mengurangi tinggi genangan hingga 75% dan/atau mengurangi jam operasi pompa hingga 60%.

---

Semarang is the capital of Central Java Province which plays an important role in economic, social, and government development. Floods that occur every year are one of the obstacles to the development of the area. Apart from the topography of the city of Semarang, which has a flat and low altitude in the north, which is directly facing the sea, as well as land subsidence which occurred every year makes this area is very vulnerable to tidal flooding. Several important factors play a big role, for example, extreme rainfall, soil moisture, and pump capacity of the polder system. The purpose of this study is to evaluate extreme rainfall events by considering the soil moisture factor and the performance of the existing pump system and provide recommendations for the existing flood control system. 2 watersheds are used as research objects, namely the Garang watershed and the Silandak watershed. The simulation was carried out using the distribution of rain that occurred in Semarang on February 6, 2021, as well as 2 conditions of soil moisture, namely, AMC II and AMC III by modeling the pump capacity in the water system. The modeling is carried out with the help of ArcMap, HEC-HMS for hydrological modeling, and RAS MAPPER for hydraulics modeling or for, The results of the analysis of the two simulations show that there is a 20% difference in peak flood discharge at the Garang watershed outlet and 1.61% and 2.23% at both outlets of Silandak watershed as well as flood area difference of ​​0.6 km2 between AMC II and AMC III. In the pump capacity recommendation, an increase in capacity is carried out by 2 times the existing condition with the target of reducing the risk by 75% and/or reducing pump operating hours by 60%."

"A case study of potential inundation of Saska Kepa in Warsaw is presented. The flood is a result of a hypothecal breach of a segment of the vistula river embankment

---

."

"Nowadays flood is a serius prolem in Jakarta, and this is caused by the uncontrolled urbanisation and bad watershed management in the upper stream. During the 207 floodingm Kampung Melayu, Jatinegara district, Esat Jakarta is one of areas that suffered from big losses...."

"Flooding has become an annual event in Indonesia, one of the regions that suffers from flooding is the regency of Trenggalek in East Java. Flooding as a natural phenomenon that has caused the disaster was tringgered by the high rainfall intensity and limited capacity of the river stream...."

"

Pemerintah Provinsi Daerah Khusus Ibukota Jakarta melalui Satuan Kerja Perangkat Daerah terkait, yaitu Suku Dinas Sumber Daya Air Kota Administrasi Jakarta Barat melakukan kegiatan pemeliharaan pompa stasioner dengan melibatkan secara langsung perusahaan manufaktur pompa itu sendiri atau perwakilan yang produknya dipakai. Hal ini perlu mendapat perhatian khusus untuk membuat Prosedur Operasional Baku yang sesuai dengan standar agar kegiatan berjalan dengan efektif dan efisien. Berdasarkan data pemeliharaan pompa stasioner, kondisi eksisting yang dilaksanakan hanya tindakan corrective maintenance saja. Oleh karena itu, preventive maintenance merupakan usulan yang dilakukan Penulis dalam praktik keinsinyuran ini. Analisis data yang diolah menggunakan dua metode, yaitu corrective maintenance dan preventive maintenance. Setelah melakukan analisis, dapat disimpulkan: 1) Setelah dilakukan analisis kerusakan terhadap data pada pompa stasioner, diperoleh kemungkinan penyebab dan penanganannya; 2) Selanjutnya, dilakukan tindakan perawatan yang meliputi preventive maintenance dan corrective maintenance yang dapat dilakukan secara mandiri maupun oleh pihak ketiga; 3) Menetapkan aktifitas alur pelaporan dan proses pemeliharaan pompa; 4) Menetapkan aktifitas alur kerja perbaikan pompa oleh pihak ketiga; 5) Penerapan prosedur alur pelaporan dan proses pemeliharaan pompa serta prosedur alur kerja perbaikan pompa oleh pihak ketiga (Vendor/ ATPM) dilakukan dengan memperhatikan nilai-nilai kode etik dan etika profesi Insinyur.

---

Provincial Government of the Special Capital Region of Jakarta through the relevant Regional Work Unit, namely the Water Resources Office of the West Jakarta Administrative City, conducts stationary pump maintenance activities by directly involving the pump manufacturing company itself or representatives whose products are used. This needs special attention to make Standard Operating Procedures that are in accordance with standards so that activities run effectively and efficiently. Based on stationary pump maintenance data, the existing conditions carried out are only corrective maintenance actions. Therefore, preventive maintenance is a proposal made by the author in this engineering practice. Data analysis is processed using two methods, namely corrective maintenance and preventive maintenance. After analyzing, it can be concluded: 1) After analyzing the damage to the data on the stationary pump, the possible causes and handling are obtained; 2) Furthermore, maintenance actions are carried out which include preventive maintenance and corrective maintenance which can be carried out independently or by third parties; 3) Establish reporting flow activities and pump maintenance processes; 4) Establish pump repair workflow activities by third parties; 5) Implementation of reporting flow procedures and pump maintenance processes as well as pump repair workflow procedures by third parties (Vendors / ATPM) is carried out by taking into account the values of the code of ethics and professional ethics of Engineers."

"ABSTRAKPenyebab utama banjir di Kota Lhoksukon adalah luapan sungai Krueng Kr. Keureuto. Daerah Aliran Sungai DAS Keureuto termasuk dalam Sistem Wilayah Sungai Pase-Peusangan. Terdapat lima anak sungai Kr. Keureuto yang akan memasuki Kota Lhoksukon yaitu ; Kr. Pirak, Kr. Ceku, Kr. Aluleuhop, Kr. Kreh dan Kr. Peuto. Analisa properti DAS menggunakan software ArcGIS 10.3, dan perhitungan puncak banjir menggunakan metode Soil Conservation Service-Curve Number pada model hidrologi WinTR-20 1.1. Melalui simulasi sesuai tutupan lahan tahun 2015 dan proyeksi Rencana Tata Ruang Wilayah tahun 2012-2032, diperoleh peredaman bendungan Keureuto masing-masing sebesar 26 dan 17 . Dari hasil simulasi, banjir dengan periode ulang diatas lima tahun masih terjadi di Kota Lhoksukon karena bendungan Keureuto hanya meredam banjir di wilayah hulu sungai Kr. Keureuto.

---

ABSTRACTThe main cause of flood in Lhoksukon City is the overflow of the Krueng river Kr. Keureuto. The Keureuto watershed is included in the Pase Peusangan River Basin System System. There are five streams of Kr. Keureuto will enter Lhoksukon City Kr. Pirak, Kr. Ceku, Kr. Aluleuhop, Kr. Kreh and Kr. Peuto. Watershed analysis using ArcGIS 10.3 software, and flood peak calculations using the Soil Conservation Service Curve Number method on the WinTR 20 1.1 hydrology model. Simulation were perfomed with 2015 land cover and Projected Regional Spatial Plan of 2012 2032, there was 26 and 17 reduction of Keureuto Dam. From result it can be concluded that flood with return periode above five years still occurred in Lhoksukon City."

"ABSTRAKBerdasarkan Comprehensive Flood Management Plan CFMP salah satu alternatif pengendalian banjir pada sungai Ciliwung ialah pembangunan Dry Dam JICA Yachiyo Engineering Co, 2013 . Pembangunan Bendungan Ciawi dan Sukamahi yang terletak di Kabupaten Bogor diharapkan dapat mengurangi puncak banjir dan menambah waktu konsentrasi akibat limpasan sungai Ciliwung, yang selama beberapa tahun memberikan dampak kerugian banjir. Dengan dibangunnya Bendungan Ciawi dan Sukamahi, perlu dilakukan penelitian terkait pengaruh kedua bendungan tersebut pada Bendung Katulampa, salah satu titik pantau sistem peringatan dini banjir di DKI Jakarta. Analisis hidrologi dengan bantuan aplikasi Win-TR 20 dan HEC-RAS dilakukan untuk mengetahui perubahan level siaga banjir pada sistem peringatan dini banjir di DKI Jakarta dengan adanya kedua bendungan tersebut. Hasil penelitian ini menunjukkan bahwa terdapat penurunan puncak banjir setelah dibangunnya Bendung Ciawi dan Bendung Sukamahi sekitar 2.5 sehingga terdapat penurunan level siaga banjir pada Bendung Katulampa setelah dibangunnya Bendung Ciawi dan Bendung Sukamahi.

---

ABSTRACT<>br>Based on the Comprehensive Flood Management Plan CFMP , one of the flood control alternatives in the Ciliwung Watershed is dry dam construction JICA Yachiyo Engineering Co, 2013 . Construction of Ciawi and Sukamahi Dams located in Bogor District are expected to decrease the flood peak and increase the time of concentration in order to reduce the loss caused by flood in DKI Jakarta due to Ciliwung river. With the construction of Ciawi and Sukamahi Dams, it is necessary to conduct research on the influence of both dams in Katulampa Weir, one of monitoring points dams on the DKI Jakarta flood early warning system. Hydrological analysis with Win TR 20 and HEC RAS was conducted to identify changes in flood level in flood early warning system in DKI Jakarta without and with both dams available. The results of this study indicate that the peak floods decreased around 2.5 after implementation of Ciawi and Sukamahi Dam. The impact of this reduction will cause the changes on flood early warning system level at Katulampa Weir."

"ABSTRAKPermasalahan bencana banjir tidak hanya dipengaruhui oleh fenomena alam yang ekstrim saja, tetapi juga dipengaruhi oleh kondisi kerusakan lingkungan, fenomena sosial mayarakat serta kebijakan pemerintah dalam upaya mengurangi risiko banjir. Strategi upaya mengurangi risiko banjir dapat dilakukan secara tepat dengan melakukan penilaian risiko banjir meliputi penilaian bahaya, kerentanan dan kapasitas. Penelitian ini bertujuan untuk mengembangkan model penilaian bahaya banjir berdasarkan data kejadian bencana banjir di DAS Kemuning Sampang Madura. Metode penilaian bahaya banjir terdiri dari 2 (dua) antara lain metode indeks topographi modifikasi dan metode kombinasi Geomorphic Flood Index(GFI) dan metode Height Above the Nearest Drainage (HAND). Indeks bahaya banjir dibagi menjadi 3 kelas yaitu rendah (indeks bahaya < 0,333), sedang (indeks bahaya: 0.333 - 0.666), tinggi (indeks bahaya > 0,666). Hasil Indeks Bahaya Banjir model indeks topographi modifikasi diperoleh luas bahaya banjir sebesar 6459 hektar (24%) indeks bahaya tinggi, 8329 hektar (31%) indeks bahaya sedang, dan 11882 hektar (45%) indeks bahaya rendah. Sedangkan hasil Indeks Bahaya Banjir model kombinasi GFI dan HAND luas bahayanya sebesar 1402 hektar (44%) indeks bahaya tinggi, 1271 hektar (40%) indeks bahaya sedang, 504 hektar (16%) indeks bahaya rendah. Model penilaian bahaya banjir metode kombinasi GFI dan HAND disimpulkan memiliki hasil yang sebagian besar mewakili kejadian sebenarnya di Kabupaten Sampang serta mampu mengakomodir model penilaian bahaya banjir sesuai ketentuan pada Perka BNPB No. 2 Tahun 2012 yaitu menggunakan parameter potensi ketinggian genangan, sehingga direkomendasikan sebagai model penilaian bahaya banjir tingkat Kab/Kota berdasarkan data kejadian (histori) banjir.

---

ABSTRACTThe problem of floods event is not only affected by extreme natural phenomena, but also influenced by conditions of environmental damage, social phenomena and government policies in efforts to reduce floods risk.The strategy to reduce flood risk can be done appropriately with conducting flood risk assessments including hazard assessment, vulnerability and capacity. This study aims to develop a flood hazard assessment model based on historical data on flood event in Kemuning watershed, Sampang-Madura. The flood hazard assessment method consists of 2, including the modified topographic index (MTI) method and the combination of the geomorphic flood index (GFI) method and the height above the nearest drainage (HAND) method. The disaster hazard level is divided into 3 classes, namely low (hazard index <0.333), medium (hazard index: 0.333 - 0.666), high (hazard index> 0.666). The result is a flood hazard index using modified topographic index models that with details of 1182 hectare (24%) high level, 8329 hectare (31 %) medium level, 11882 hectare (45%) low level. While the result is a flood hazard index using GFI and HAND Combination models that with details of 1402 hectare (44%) high level, 1271 hectare (40 %) medium level, 504 hectare (16 %) low level.The flood hazard assessment model of the GFI and HAND combination method is concluded to have results that largely represent the actual events in Sampang Regency and are able to accommodate the flood hazard assessment model according to the provisions of Perka BNPB No. 2 of 2012, namely using parameters of potential inundation height, so it is recommended as a flood hazard assessment model at the district /city level based on the event data (history) of floods."