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      Kaji Ulang Elevasi Muka Air dalam Perencanaan Bendungan Kering (Dry Dam) Ciawi di Kabupaten Bogor Jawa Barat

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      Date
      2019-09-30
      Author
      Afif, Abidzar
      Waspodo, Roh Santoso Budi
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      Abstract
      Bendungan Ciawi dikategorikan sebagai bendungan kering karena tidak adanya area permanen untuk menahan air. Tujuan penelitian ini adalah menentukan debit banjir serta elevasi muka air banjir Sungai Ciliwung yang direncanakan dan menguji kesesuaiannya dengan elevasi puncak Bendung Ciawi. Curah hujan harian maksimum diperoleh menggunakan metode Log Pearson dan debit banjir rencana dianalisis menggunakan metode Haspers. Data curah hujan harian maksimum periode ulang seribu tahun sebesar 336 mm. Nilai D kritis uji Kolmogorov-Smirnov sebesar 0.248 lebih kecil daripada nilai D maksimumnya sebesar 0.09, sehingga data tersebut dapat diterima. Data debit banjir rencana periode ulang seribu tahun dihasilkan sebesar 411.91 m³/detik. Pendugaan profil menggunakan program HEC-RAS menghasilkan elevasi muka air banjir Sungai Ciliwung 532.76 mdpl. Elevasi puncak bendung 551 mdpl, dengan elevasi muka air banjir untuk debit kala ulang 1000 tahun 545.95 mdpl dan tinggi jagaan sebesar 1.66 m, sesuai dengan elevasi muka air banjir Sungai Ciliwung.
       
      The Ciawi Dam is categorized as a dry dam because there is no permanent area to keep water. The purpose of this study were to determine the Ciliwung River flood discharge and flood water level plan planned and to analyze the correlation with the Ciawi Dam peak elevation. The maximum daily rainfall was obtained using the Pearson Log method and the design flood discharge was analyzed using the Haspers method. The maximum daily ranfall data for a thousand year return period was 336 mm. The critical D value of the Kolmogorov-Smirnov test of 0.248 was smaller than the maximum D value of 0.09, so the data can be used. The planned flood discharge for a thousand year return period was 411.91 m³/s. The profile prediction using the HEC-RAS program resulted in the elevation of the Ciliwung river flood water level was 532.76 masl. The dam's peak elevation of 551 masl, with the elevation of the flood water level of a thousand year return period of 545.95 masl and the freeboard height of 1.66 m, were suitable with flood water level of Ciliwung River.
       
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      http://repository.ipb.ac.id/handle/123456789/108780
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      • UT - Civil and Environmental Engineering [1042]

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